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1. "Click" chemistry-based surface modification of poly(dimethylsiloxane) for protein separation in a microfluidic chip

Author:
Zhang, Zhaowei; Feng, Xiaojun; Xu, Fei; Liu, Xin; Liu, Bi-Feng
Source:
Electrophoresis 2010 v.31 no.18 pp. 3129-3136
ISSN:
0173-0835
Subject:
Fourier transform infrared spectroscopy; absorption; adsorption; amino acids; contact angle; electrophoresis; proteins
Abstract:
... "Click" chemistry-based surface modification strategy was developed for PDMS microchips to enhance separation performance for both amino acids and proteins. Alkyne-PEG was synthesized by a conventional procedure and then "click" grafted to azido-PDMS. FTIR absorption by attenuated total reflection and contact angle measurements proved efficient grafting of alkyne-PEG onto PDMS surface. Manifest EO ...
DOI:
10.1002/elps.201000208

2. (3-Mercaptopropyl)trimethoxysilane-Assisted Synthesis of Macro- and Mesoporous Graphene Aerogels Exhibiting Robust Superhydrophobicity and Exceptional Thermal Stability

Author:
Zhou Shuai; Zhou Xiang; Jiang Wei; Wang Tianhe; Zhang Ning; Lu Yue; Yu Liuhua; Yin Zuozhu
Source:
Industrial & Engineering Chemistry Research 2016 v.55 no.4 pp. 948-953
ISSN:
1520-5045
Subject:
aerogels; contact angle; drying; engineering; ethanol; graphene; hydrophobicity; nanocomposites; polymers; porous media; thermal stability
Abstract:
... Robust superhydrophobic and exceptionally thermostable graphene aerogels exhibiting a three-dimensional macro- and mesoporous structure have been synthesized through a (3-mercaptopropyl)trimethoxysilane-assisted two-step route with natural drying. The facile synthetic process not only guarantees their excellent performance but also greatly improves their practical production rate. The prepared gra ...
DOI:
10.1021/acs.iecr.5b03179

3. 1,2-Epoxyalkane: Another Precursor for Fabricating Alkoxy Self-Assembled Monolayers on Hydrogen-Terminated Si(111)

Author:
Ahmed I. A. Soliman; Toru Utsunomiya; Takashi Ichii; Hiroyuki Sugimura
Source:
Langmuir 2018 v.34 no.44 pp. 13162-13170
ISSN:
1520-5827
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; atomic force microscopy; chemical bonding; contact angle; homolytic cleavage; hydrophobicity; silicon; ultraviolet radiation
Abstract:
... This work describes the UV alkoxylation of a series of 1,2-epoxyalkanes on the hydrogen-terminated silicon (H–Si) substrate. The formation of alkoxy self-assembled monolayers (SAMs) and the nature of bonding at the surface of H–Si were examined using water contact angle goniometer, spectroscopic ellipsometer, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), a ...
DOI:
10.1021/acs.langmuir.8b02717

4. 1-Pentanol-Assisted Waterflooding in High Salinity Brine up to 140 °C in Carbonate Reservoirs

Author:
Nasser S. Al Maskari; Eghan Arjomand; Mohamed Almobarak; Ali Saeedi; Quan Xie
Source:
Energy & fuels 2020 v.34 no.10 pp. 12215-12224
ISSN:
1520-5029
Subject:
carbonates; contact angle; cost effectiveness; energy; hydrophilicity; oils; pentanols; salinity; temperature; wettability
Abstract:
... A primary challenge of chemical enhanced oil recovery (CEOR) in high temperature (>100 °C) carbonate fields is to obtain viable and cost-effective chemicals that can survive at such critical reservoir conditions. Our previous work shows that alcohol-assisted waterflooding shifts wettability in contact angle measurements (subpore level), which can be deciphered from a geochemical perspective. In th ...
DOI:
10.1021/acs.energyfuels.0c01953

5. 100MeV Si9+ swift heavy ion irradiation induced enhancement in electrochemical properties of electrolyte membrane composites based on ionic liquid-polymer-nanocomposite

Author:
A.K. Nath; A. Kumar
Source:
Journal of membrane science 2015 v.485 pp. 30-41
ISSN:
0376-7388
Subject:
X-ray diffraction; ambient temperature; artificial membranes; blood platelets; contact angle; crystal structure; electrochemistry; electrolytes; hydrophilicity; hydrophobicity; ionic liquids; irradiation; montmorillonite; nanocomposites; nanofibers; polymers; porosity; scanning electron microscopy; transmission electron microscopy
Abstract:
... In the present study, 100MeV Si⁹⁺ swift heavy ion (SHI) irradiation has been used as a tool to enhance the electrochemical properties of ionic liquid based polymer electrolyte nanocomposite membranes and their fluence dependant properties have been investigated. Polyaniline (PAni) nanofibers have been grown inside the interlayer galleries of montmorillonite (MMT) and used as hybrid nanofiller. Wit ...
DOI:
10.1016/j.memsci.2015.03.020

6. 110th Anniversary: Liquid Separation Membranes Based on Nanowire Substrates for Organic Solvent Nanofiltration and Membrane Distillation

Author:
John Chau; Dhananjay Singh; Kamalesh K. Sirkar
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.31 pp. 14350-14356
ISSN:
1520-5045
Subject:
aluminum oxide; ceramics; coatings; contact angle; distillation; dyes; ethylene; hydrophobicity; liquids; methanol; moieties; nanofiltration; nanowires; oils; polyamides; polymerization; porosity; process design; silicone; solvents; temperature; water vapor
Abstract:
... Ceramic nanowire-based flat porous membranes allow development of organic–inorganic membranes. Two types of surface modifications of alumina nanowire-based membranes were implemented. The first one involved reaction of hydroxyl groups on an alumina surface with silicone oil at a higher temperature, developing a grafted coating yielding a nonporous or a porous hydrophobic membrane. The hydrophobici ...
DOI:
10.1021/acs.iecr.9b02292

7. 13C-NMR, PAHs, WSOC and water repellence of fire-affected soils (Albic Podzols) in lichen pine forests, Russia

Author:
Alexey A. Dymov; Dmitry N. Gabov; Evgeniy Yu. Milanovskii
Source:
Environmental earth sciences 2017 v.76 no.7 pp. 275
ISSN:
1866-6280
Subject:
nuclear magnetic resonance spectroscopy; taiga; boreal forests; contact angle; polycyclic aromatic hydrocarbons; soil organic matter; Podzols; coniferous forests; ground vegetation; carbon; soil horizons; forest ecosystems; forest fires; droplets; fire intensity; biogeochemical cycles; lichens; Russia
Abstract:
... Soil organic matter (SOM) in boreal forest ecosystems can be strongly transformed by fires which, in turn, can affect soil physical and biological properties such as water repellency and nutrient cycling. The article contains the results of a study on SOM content in fire-affected lichen pine forests of the middle taiga subzone of the European part of Russia (Komi Republic). Soils which survived su ...
DOI:
10.1007/s12665-017-6600-2

8. 2-methoxyethylacrylate modified polysulfone membrane and its blood compatibility

Author:
Xin Tian; Yun-Ren Qiu
Source:
Archives of biochemistry and biophysics 2017 pp. -
ISSN:
0003-9861
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adhesion; adsorption; blood platelets; cattle; cell adhesion; contact angle; hydrophilicity; nuclear magnetic resonance spectroscopy; prothrombin; thrombin; thromboplastin
Abstract:
... Hydrophilic material 2-methoxyethylacrylate (MEA) was grafted onto polysulfone (PSF) membrane via Michael addition reaction. The 1H nuclear magnetic resonance (1H NMR), Attenuated total reflectance-Fourier transform infrared spectroscope (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) characterization of the modified membrane proved that MEA had been successfully grafted onto PSF membrane su ...
DOI:
10.1016/j.abb.2017.07.018

9. 2.6 V Aqueous Battery with a Freely Diffusing Electron Acceptor

Author:
Thimmappa Ravikumar; Devendrachari Mruthyunjayachari Chattanahalli; Kottaichamy Alagar Raja; Aralekallu Shambhulinga; Gautam Manu; Shafi Shahid Pottachola; Manzoor Bhat Zahid; Thotiyl Musthafa Ottakam
Source:
The Journal of Physical Chemistry C 2017 v.121 no.7 pp. 3707-3713
ISSN:
1932-7455
Subject:
Fourier transform infrared spectroscopy; batteries; carbon nanoparticles; catalytic activity; cathodes; contact angle; electric power; electrolytes; energy; evaporation; hydrophobicity; oxygen production; redox reactions; thermodynamics; titration; zinc
Abstract:
... Here we show a strategy to expand the working voltage of aqueous metal batteries beyond the thermodynamic limit of 1.23 V by modifying the interfacial chemistry existing at the cathode/electrolyte interface. Highly nonwettable carbon nanoparticle cathode/electrolyte interface with a freely diffusing electron acceptor kinetically muted water decomposition due to reduced contact between water and th ...
DOI:
10.1021/acs.jpcc.6b11180

10. 2D–3D Mixed Organic–Inorganic Perovskite Layers for Solar Cells with Enhanced Efficiency and Stability Induced by n-Propylammonium Iodide Additives

Author:
Disheng Yao; Chunmei Zhang; Shengli Zhang; Yang Yang; Aijun Du; Eric Waclawik; Xiaochen Yu; Gregory J. Wilson; Hongxia Wang
Source:
ACS applied materials & interfaces 2019 v.11 no.33 pp. 29753-29764
ISSN:
1944-8252
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; additives; air; cations; contact angle; density functional theory; encapsulation; energy; hydrophobicity; hysteresis; industrial applications; oxygen; relative humidity; solar cells; solar energy; surface water; wettability
Abstract:
... Device instability has become an obstacle for the industrial application of organic–inorganic metal halide perovskite solar cells that has already demonstrated over 23% laboratory power conversion efficiency (PCE). It has been discovered that the sliding of A-site cations in the perovskite compound through and out of the three-dimensional [PbI₆]⁴– crystal frame is one of the main reasons that are ...
DOI:
10.1021/acsami.9b06305

11. 3-D thermodynamic analysis on wetting behavior of superhydrophobic surfaces

Author:
Liang He; Wenyan Liang; Zhenqing Wang; Bin Yang; Zhiwei Duan; Yahui Chen
Source:
Colloids and surfaces 2016 v.504 pp. 201-209
ISSN:
0927-7757
Subject:
Gibbs free energy; contact angle; hydrophobicity; hysteresis; models; surface roughness
Abstract:
... Superhydrophobic surfaces have attracted much interest from experimental researches due to their special properties. Various researches to prepare these surfaces have been reported. However, the thermodynamic mechanisms of superhydrophobicity affected by surface roughness have not been understood completely. In this paper, a 3-D square pillar-textured surface model is chosen to investigate the the ...
DOI:
10.1016/j.colsurfa.2016.05.070

12. 3D Organic Nanofabrics: Plasma-Assisted Synthesis and Antifreezing Behavior of Superhydrophobic and Lubricant-Infused Slippery Surfaces

Author:
Maria Alcaire; Carmen Lopez-Santos; Francisco J. Aparicio; Juan R. Sanchez-Valencia; Jose M. Obrero; Zineb Saghi; Victor J. Rico; German de la Fuente; Agustin R. Gonzalez-Elipe; Angel Barranco; Ana Borras
Source:
Langmuir 2019 v.35 no.51 pp. 16876-16885
ISSN:
1520-5827
Subject:
ceramics; contact angle; fabrics; hydrophobicity; microstructure; nanowires; polymers; porous media; roughness; temperature
Abstract:
... Herein, we present the development of supported organic nanofabrics formed by a conformal polymer-like interconnection of small-molecule organic nanowires and nanotrees. These organic nanostructures are fabricated by a combination of vacuum and plasma-assisted deposition techniques to generate step by step, single-crystalline organic nanowires forming one-dimensional building blocks, organic nanot ...
DOI:
10.1021/acs.langmuir.9b03116

13. 3D electrohydrodynamic printing of highly aligned dual-core graphene composite matrices

Author:
Baolin Wang; Xing Chen; Zeeshan Ahmad; Jie Huang; Ming-Wei Chang
Source:
Carbon 2019 v.153 pp. 285-297
ISSN:
0008-6223
Subject:
bioassays; biocompatibility; cell movement; contact angle; dopamine; drugs; encapsulation; gelatin; graphene; lactones; nerve tissue; polyethylene glycol
Abstract:
... The aim of this study was to develop an EHD printing method to fabricate graphene-loaded polycaprolactone (PCL)/polyethylene oxide (PEO) dual-core matrices. Graphene was incorporated in shell PCL components, while gelatin and dopamine hydrochloride (DAH) were encapsulated in two PEO cores to enhance biocompatibility of graphene-loaded matrices. Furthermore, the effect of PEO concentration on dual- ...
DOI:
10.1016/j.carbon.2019.07.030

14. 3D mossy structures of zinc filaments: A facile strategy for superamphiphobic surface design

Author:
Shudi Zhi; Gang Wang; Zhixiang Zeng; Lijing Zhu; Zhixiong Liu; Dawei Zhang; Kaile Xu; Qunji Xue
Source:
Journal of colloid and interface science 2018 v.526 pp. 106-113
ISSN:
0021-9797
Subject:
air; coatings; contact angle; droplets; electrochemistry; hexadecane; hydrophobicity; oils; rapid methods; zinc
Abstract:
... The superamphiphobic surfaces with extreme repellency to liquids are very attractive in many fields, but their fabrication processes are always low effective and expensive. So it is still a challenge to create the superamphiphobic surfaces by simple, time saving and universal method. In this work, the mossy zinc (Zn) filaments, a promising re-entrant structure, was rapidly constructed on various m ...
DOI:
10.1016/j.jcis.2018.04.083

15. 3D poly-ε-caprolactone/graphene porous scaffolds for bone tissue engineering

Author:
Huei-Yu Huang; Fang-Yu Fan; Yung-Kang Shen; Chia-Hsien Wang; Yuen-Tzu Huang; Ming-Jyh Chern; Yen-Hsiang Wang; Liping Wang
Source:
Colloids and surfaces 2020 v.606 pp. 125393
ISSN:
0927-7757
Subject:
biocompatibility; biodegradability; bones; compression strength; contact angle; graphene; hydrophilicity; hydrophobicity; pH; porosity; weight loss
Abstract:
... Three-dimensional biomedical scaffolds of porous biodegradable materials have been widely applied in tissue engineering for the purposes of bone repair and regeneration. In this study, porous biomedical scaffolds were fabricated by a solvent-casting/particulate-leaching method using poly-ε-caprolactone (PCL) as the matrix material, graphene platelets as the added material, and salt (NaCl) as the p ...
DOI:
10.1016/j.colsurfa.2020.125393

16. 3D porous poly(l-lactic acid) foams composed of nanofibers, nanofibrous microsheaves and microspheres and their application in oil–water separation

Author:
Wen Zhang; Min Liu; Yingying Liu; Ruilai Liu; Fangfang Wei; Rongdong Xiao; Haiqing Liu
Source:
Journal of materials chemistry A 2015 v.3 no.26 pp. 14054-14062
ISSN:
2050-7496
Subject:
absorbents; absorption; biodegradability; contact angle; dimethylformamide; foaming; foams; hydrophobicity; microparticles; microstructure; nanofibers; oils; polylactic acid; porosity; separation; temperature
Abstract:
... Morphology transition from nanofibers to nanofibrous microsheaves to nanofibrous microspheres was reported for poly(l-lactic acid) (PLLA) induced by thermally induced phase separation of PLLA/dimethylformamide solution. It was found that nanofibrous microspheres, microsheaves, and nanofibers were produced from solutions with a PLLA concentration of over 5 wt%, 3 wt%, and 1 wt%, respectively. With ...
DOI:
10.1039/c5ta02759d

17. 3D-Printed Bioinspired Cassie–Baxter Wettability for Controllable Microdroplet Manipulation

Author:
Qiu Yin; Qing Guo; Zhaolong Wang; Yiqin Chen; Huigao Duan; Ping Cheng
Source:
ACS applied materials & interfaces 2020 v.13 no.1 pp. 1979-1987
ISSN:
1944-8252
Subject:
adhesion; cell culture; contact angle; geometry; hydrophilicity; hydrophobicity; models; water transportation; wettability
Abstract:
... It is a great challenge to fabricate a surface with Cassie–Baxter wettability that can be continuously adjusted from hydrophilicity to superhydrophobicity by changing of geometric parameters. In this paper, we propose and demonstrate a bioinspired surface fabricated by using a projection micro-stereolithography (PμSL) based 3D printing technique to address the challenge. Independent of materials, ...
DOI:
10.1021/acsami.0c18952

18. 3D-Printed Membranes with a Zwitterionic Hydrogel Coating for More Robust Oil–Water Separation

Author:
Yihan Song; Bingchen Wang; Patrick Altemose; Cliff Kowall; Lei Li
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.48 pp. 21058-21065
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; acrylamides; ammonium hydroxide; contact angle; hydrogels; hydrophilicity; polymerization; process design; wastewater; zwitterions
Abstract:
... Three-dimensional (3D)-printed membranes via stereolithography (SLA) are promising in oil–water separation, which is the key in the purification of industrial oily wastewater. To achieve gravity-driven oil–water separation, the membrane material needs to be simultaneously hydrophilic/oleophobic. However, most of the state-of-the-art materials for SLA do not meet the requirement. While water-adsorb ...
DOI:
10.1021/acs.iecr.0c04436

19. 3D-bioprinting approach to fabricate superhydrophobic epoxy/organophilic clay as an advanced anticorrosive coating with the synergistic effect of superhydrophobicity and gas barrier properties

Author:
Chi-Hao Chang; Min-Hsiang Hsu; Chang-Jian Weng; Wei-I. Hung; Tsao-Li Chuang; Kung-Chin Chang; Chih-Wei Peng; Yu-Chun Yen; Jui-Ming Yeh
Source:
Journal of materials chemistry A 2013 v.1 no.44 pp. 13869-13877
ISSN:
2050-7496
Subject:
Xanthosoma sagittifolium; clay; coatings; contact angle; corrosion; electrochemistry; electrodes; epoxides; hydrophobicity; leaves; oxygen; steel; synergism; water vapor
Abstract:
... Novel anti-corrosive coatings were prepared by replicating the fresh leaves of Xanthosoma sagittifolium, a species of tropical flowering plant. These coatings have the synergistic effect of superhydrophobicity and gas barrier properties. The superhydrophobic epoxy/organophilic clay (SEC) coating, prepared by a 3D-bioprinting technique based on the surface of fresh Xanthosoma sagittifolium leaves, ...
DOI:
10.1039/c3ta12754k

20. 4,4′-Fluoresceinoxy bisphthalonitrile (FPN)-incorporated polycaprolactone electrospun membranes: a portable sensor strip for detection of Fe3+ ions

Author:
K. K. Rijin; P. Sagitha; G. S. Amitha; Suni Vasudevan; A. Sujith
Source:
Journal of materials science 2019 v.54 no.20 pp. 13433-13444
ISSN:
0022-2461
Subject:
aqueous solutions; contact angle; detection limit; fluorescence emission spectroscopy; infrared spectroscopy; ions; iron; lactones; nanofibers; polymers; scanning electron microscopy; strength (mechanics)
Abstract:
... 4,4′-Fluoresceinoxy bisphthalonitrile (FPN) fluorophore-incorporated electrospun nanofibrous sensor strips have been fabricated for selective detection of Fe³⁺ ions in aqueous solutions. Polycaprolactone (PCL) was used as the primary polymer matrix. PCL/FPN nanofibrous membranes were prepared by solution electrospinning technique. Fibrous morphology was evaluated using scanning electron microscopy ...
DOI:
10.1007/s10853-019-03829-6

21. 4-Fluoro-3-nitrophenyl grafted gold electrode based platform for label free electrochemical detection of interleukin-2 protein

Author:
Sunil K. Arya; Mi Kyoung Park
Source:
Biosensors & bioelectronics 2014 v.61 pp. 260-265
ISSN:
0956-5663
Subject:
gold; contact angle; antibodies; interleukin-2; electrodes; electrochemistry; biosensors
Abstract:
... A new platform based on 4-Fluoro-3-nitrophenyl (FNP) grafted gold disk electrode prepared via electrochemical reduction of 4-fluoro-3-nitrobenzene diazonium ion has been developed and utilized for biosensor fabrication. Anti-interleukin-2 (anti-IL2) antibody has been covalently immobilized onto FNP/Au surface and utilized for label free electrochemical impedance based detection of cytokine IL2. FN ...
DOI:
10.1016/j.bios.2014.05.029

22. A 2-D analytical model for the wetting behavior of various microtextured surfaces

Author:
P. Xu; J.R. Bai; P. Zhou; L.L. Wang; X.N. Sun; L. Wei; Q.F. Zhou
Source:
Colloids and surfaces 2022 v.636 pp. 127853
ISSN:
0927-7757
Subject:
Gibbs free energy; contact angle; energy; hydrophilicity; hydrophobicity; hysteresis; liquids; microstructure; models; vapors; wettability
Abstract:
... In this work, a physical model for various microtextured surfaces was proposed to investigate their wettability, and in particular, superhydrophobicity. Using such an analytical model, the thermodynamic states, and specifically, free energy and free energy barriers of the concerned surfaces such as trapezoidal, vertical and inverse-trapezoidal surfaces, which were correlated the contact angle and ...
DOI:
10.1016/j.colsurfa.2021.127853

23. A 3,3′-dichlorobenzidine-imprinted polymer gel surface plasmon resonance sensor based on template-responsive shrinkage

Author:
Chunyan Zhou; Jigang Gao; Lili Zhang; Jie Zhou
Source:
Analytica chimica acta 2014 v.812 pp. 129-137
ISSN:
0003-2670
Subject:
atomic force microscopy; contact angle; detection limit; dielectric spectroscopy; gels; gold; molecular imprinting; polymers; shrinkage; soil; surface plasmon resonance; tap water
Abstract:
... Molecularly imprinted polymer gel film on the gold substrate of a chip was prepared with minute amount of cross-linker for the fabrication of a surface plasmon resonance (SPR) sensor sensitive to 3,3′-dichlorobenzidine. The molecularly imprinted gel film was anchored on a gold chip by a surface-bound photo-radical initiator. The sensing of 3,3′-dichlorobenzidine is based on responsive shrinkage of ...
DOI:
10.1016/j.aca.2013.12.015

24. A 3-D model for thermodynamic analysis of hierarchical structured superhydrophobic surfaces

Author:
Wenyan Liang; Liang He; Fangxin Wang; Bin Yang; Zhenqing Wang
Source:
Colloids and surfaces 2017 v.523 pp. 98-105
ISSN:
0927-7757
Subject:
Gibbs free energy; Lotus; chemical composition; contact angle; corolla; hydrophobicity; hysteresis; leaves; models; surface roughness
Abstract:
... Lotus leaves and rose petals are the two typical natural examples with superhydrophobicity, also known as the lotus effect and petal effect, respectively. It is generally recognized that the hierarchical structures on their surfaces are responsible for the lotus effect and petal effect. However, the relations between surface geometries and the corresponding wetting states have not been understood ...
DOI:
10.1016/j.colsurfa.2017.04.001

25. A 3D printable diamond polymer composite: a novel material for fabrication of low cost thermally conducting devices

Author:
U. Kalsoom; A. Peristyy; P. N. Nesterenko; B. Paull
Source:
RSC advances 2016 v.6 no.44 pp. 38140-38147
ISSN:
2046-2069
Subject:
composite materials; contact angle; heat transfer; microparticles; polymers; prototypes; scanning electron microscopy; thermal expansion; thermography; thermogravimetry
Abstract:
... The development of a thermally conducting composite material that can be rapidly 3D printed into prototype objects is presented. The composite structures containing 10, 20, 25 and 30% (w/v) of 2–4 micron sized synthetic diamond microparticles added to the acrylate polymer were produced using a low cost stereolithographic 3D printer. The prepared materials were characterised according to heat trans ...
DOI:
10.1039/c6ra05261d

26. A Bespoke Force Field To Describe Biomolecule Adsorption at the Aqueous Boron Nitride Interface

Author:
Akin Budi; Tiffany R. Walsh
Source:
Langmuir 2019 v.35 no.49 pp. 16234-16243
ISSN:
1520-5827
Subject:
Gibbs free energy; adsorption; arginine; boron nitride; chemical interactions; contact angle; data collection; density functional theory; graphene; liquids; models; molecular dynamics; nanomaterials; prediction; tryptophan
Abstract:
... Reliable manipulation of the interface between 2D nanomaterials and biomolecules represents a current frontier in nanoscience. The ability to resolve the molecular-level structures of these biointerfaces would provide a fundamental data set that is needed to enable systematic and knowledge-based progress in this area. These structures are challenging to obtain via experiment alone, and molecular s ...
DOI:
10.1021/acs.langmuir.9b03121

27. A Bifunctional Thioether Linked Coumarin Appended Calix[4]arene Acquires Selectivity Toward Cu2+ Sensing on Going from Solution to SAM on Gold

Author:
Samanta Kushal; Rao Chebrolu Pulla
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.5 pp. 3135-3142
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; absorption; acetonitrile; anions; cations; coatings; contact angle; copper; coumarin; gold; iron; mass spectrometry; metal ions; nuclear magnetic resonance spectroscopy; scanning tunneling microscopy; surface plasmon resonance
Abstract:
... A bifunctional calix[4]arene molecule bearing coumarin moiety on the lower rim and thioether moiety on the upper rim (L₁), has been synthesized and well characterized by ¹H, ¹³C NMR and mass spectrometry. Suitably functionalized coumarin moieties are well suited for selective recognition of various cations and anions. Among the 10 different metal ions studied, only Cu²⁺ and Fe³⁺ exhibit appreciabl ...
DOI:
10.1021/acsami.5b10481

28. A Biologically Inspired Hydrophobic Membrane for Application in Pervaporation

Author:
Jullok Nora; Martínez Rodrigo; Wouters Christine; Luis Patricia; Sanz María Teresa; Van der Bruggen Bart
Source:
Langmuir 2013 v.29 no.5 pp. 1510-1516
ISSN:
1520-5827
Subject:
Fourier transform infrared spectroscopy; Prunus laurocerasus; artificial membranes; biomimetics; coatings; contact angle; desorption; epicuticular wax; ethyl acetate; hydrophobicity; image analysis; leaves; odor compounds; pervaporation; polydimethylsiloxane; scanning electron microscopy; silicon
Abstract:
... An artificial polydimethylsiloxane/polyphenylsulfone (PDMS/PPSU) membrane, which emulates the hydrophobic behavior of natural membranes, was synthesized. Hydrophobicity was achieved by coating the membrane surface sublayer using conventional silicon material, which imitates the character of epicuticular wax (EW) of Prunus laurocerasus L. leaves. It was then applied as a separation medium in pervap ...
DOI:
10.1021/la3050253

29. A CFD model for prediction of critical electric potential preventing membrane fouling in oily waste water treatment

Author:
Maryam Abbasi Monfared; Norollah Kasiri; Toraj Mohammadi
Source:
Journal of membrane science 2017 v.539 pp. 320-328
ISSN:
0376-7388
Subject:
artificial membranes; contact angle; dielectrophoresis; electric field; experimental design; fouling; models; oils; prediction; response surface methodology; screening; surface tension; wastewater treatment
Abstract:
... Beside several methods of membrane fouling reduction, induction of electric field in system of dielectric materials can also postpone fouling. For the first time, CFD technique is used to develop a model to predict behavior of a sample oil droplet located on the membrane surface affected by dielectrophoresis force in a good agreement with experimental data. Then experimental design is used to stud ...
DOI:
10.1016/j.memsci.2017.05.077

30. A Co-assembled Gel of a Pyromellitic Dianhydride Derivative and Polyaniline with Optoelectronic and Photovoltaic Properties

Author:
Bairi Partha; Chakraborty Priyadarshi; Shit Arnab; Mondal Sanjoy; Roy Bappaditya; Nandi Arun K.
Source:
Langmuir 2014 v.30 no.25 pp. 7547-7555
ISSN:
1520-5827
Subject:
Fourier transform infrared spectroscopy; X-radiation; ammonium; atomic force microscopy; chlorides; contact angle; electric current; fluorescence; hydrogels; lighting; photovoltaic cells; polymers; sodium; storage modulus; ultraviolet-visible spectroscopy; white light
Abstract:
... 5,5′-(1,3,5,7-Tetraoxopyrrolo[3,4-f]isoindole-2,6-diyl)diisophthalic acid (PMDIG) is used to produce a supramolecular hydrogel via acid–base treatment. The field emission scanning electron micrograph and atomic force microscopy micrographs exhibit a fibrillar network structure from intermolecular supramolecular interaction, supported from Fourier transform infrared (FTIR) and UV–vis spectra. The f ...
DOI:
10.1021/la500890r

31. A Comparative Experimental Study of Huff-n-Puff Gas Injection and Surfactant Treatment in Shale Gas-Condensate Cores

Author:
Sharanya Sharma; James J. Sheng; Ziqi Shen
Source:
Energy & fuels 2018 v.32 no.9 pp. 9121-9131
ISSN:
1520-5029
Subject:
condensates; contact angle; economic feasibility; liquids; methane; nanopores; oils; perfluorocarbons; permeability; shale; surfactants; wettability
Abstract:
... Experimental and simulation studies have thus far demonstrated that gas injection is an effective way of recovering condensate in shale gas-condensate reservoirs. It is economically feasible and relatively easier to be injected into the tight reservoir as compared to most of the other injection fluids. To the best of our knowledge, surfactant treatment has not been tested in shale cores for gas-co ...
DOI:
10.1021/acs.energyfuels.8b01816

32. A Comparison Between Mercury Injection and Nitrogen Sorption as Methods of Determining Pore Size Distributions

Author:
I. D. Sills; L. A. G. Aylmore; J. P. Quirk
Source:
Soil Science Society of America journal 1973 v.37 no.4 pp. 535-537
ISSN:
0361-5995
Subject:
contact angle; goethite; mercury; models; nitrogen; porosity; soil; sorption
Abstract:
... A comparison of mercury injection and nitrogen sorption methods of pore size distribution analysis was made on a sample of goethite using the slit-shaped pore model. Using the commonly accepted contact angle of 140° for mercury, the mercury pore-size distribution plot is displaced by approximately 20% in plate separation with respect to the nitrogen plot. The assumption of a contact angle of 153° ...
DOI:
10.2136/sssaj1973.03615995003700040021x

33. A Comparison of Various Methods to Predict Bacterial Predilection for Organic Solvents Used as Reaction Media

Author:
Hamada, Takahiro; Sameshima, Yuka; Honda, Kohsuke; Omasa, Takeshi; Kato, Junichi; Ohtake, Hisao
Source:
Journal of bioscience and bioengineering 2008 v.106 no.4 pp. 357-362
ISSN:
1389-1723
Subject:
Escherichia coli; Pseudomonas putida; Rhodococcus opacus; adhesion; bacteria; bacterial adhesion; biocatalysis; contact angle; dispersibility; droplets; electrostatic interactions; glass; hydrophobic interaction chromatography; hydrophobicity; oils; solvents
Abstract:
... Bacterial predilection for organic solvents is important in whole-cell biocatalysis in organic media. Although various methods of measuring bacterial hydrophobicity have been proposed, it is not fully determined whether they are applicable to the assessment of bacterial predilection for organic solvents in whole-cell biocatalytic processes. In this study, bacterial predilection for organic solvent ...
DOI:
10.1263/jbb.106.357

34. A Critical Review of Membrane Wettability in Membrane Distillation from the Perspective of Interfacial Interactions

Author:
Haiqing Chang; Baicang Liu; Zhewei Zhang; Ritesh Pawar; Zhongsen Yan; John C. Crittenden; Radisav D. Vidic
Source:
Environmental science & technology 2020 v.55 no.3 pp. 1395-1418
ISSN:
1520-5851
Subject:
Gibbs free energy; adhesion; contact angle; distillation; environmental science; evolution; hydrophobicity; liquids; surface tension; wettability
Abstract:
... Hydrophobic membranes used in membrane distillation (MD) systems are often subject to wetting during long-term operation. Thus, it is of great importance to fully understand factors that influence the wettability of hydrophobic membranes and their impact on the overall separation efficiency that can be achieved in MD systems. This Critical Review summarizes both fundamental and applied aspects of ...
DOI:
10.1021/acs.est.0c05454

35. A Description of the Wool Fiber Surface Based on Contact Angle Measurements

Author:
Thomas J. Horr
Source:
Textile research journal v.67 no.1 pp. 1-5
ISSN:
1746-7748
Subject:
air; chemical analysis; contact angle; equations; fabrics; hydrophilicity; liquids; models; moieties; textile fibers; wool
Abstract:
... Contact angle data from various sources in conjunction with the Israelachvili and Gee equation derived for chemically heterogeneous surfaces are used to describe the wool fiber surface/liquid/air interface. A diagram representing surface compositions consistent with this data is constructed based on the assumption that the wool fiber surface chemical moieties consist of methyl, methylene, and hydr ...
DOI:
10.1177/004051759706700102

36. A Detailed Molecular Dynamics Simulation and Experimental Investigation on the Interfacial Bonding Mechanism of an Epoxy Adhesive on Carbon Steel Sheets Decorated with a Novel Cerium–Lanthanum Nanofilm

Author:
Bahlakeh Ghasem; Ramezanzadeh Bahram
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.20 pp. 17536-17551
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; Gibbs free energy; X-ray photoelectron spectroscopy; adhesion; adsorption; atomic force microscopy; carbon; ceric oxide; coatings; contact angle; energy; energy-dispersive X-ray analysis; epoxides; ferric oxide; ferrous oxide; iron; microstructure; models; molecular dynamics; roughness; scanning electron microscopy; solvents; steel; van der Waals forces; wet environmental conditions
Abstract:
... The influences of steel surface treatment by a novel cerium–lanthanum (Ce-La) nanofilm on the adhesion mechanism of an epoxy adhesive were studied through experimental and modeling approaches. The surface morphology and microstructure of the film deposited were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), and ...
DOI:
10.1021/acsami.7b00644

37. A Facile All-Solution-Processed Surface with High Water Contact Angle and High Water Adhesive Force

Author:
Chen Mei; Hu Wei; Liang Xiao; Zou Cheng; Li Fasheng; Zhang Lanying; Chen Feiwu; Yang Huai
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.27 pp. 23246-23254
ISSN:
1944-8252
Subject:
contact angle; durability; epoxides; hydrophobicity; liquid crystals; scanning electron microscopy; separation; water transportation
Abstract:
... A series of sticky superhydrophobicity surfaces with high water contact angle and high water adhesive force is facilely prepared via an all-solution-processed method based on polymerization-induced phase separation between liquid crystals (LCs) and epoxy resin, which produces layers of epoxy microspheres (EMSs) with nanofolds on the surface of a substrate. The morphologies and size distributions o ...
DOI:
10.1021/acsami.7b07429

38. A Facile Electrodeposition Process for the Fabrication of Superhydrophobic and Superoleophilic Copper Mesh for Efficient Oil–Water Separation

Author:
Liu Yan; Zhang Kaiteng; Yao Wenguang; Zhang Chengchun; Han Zhiwu; Ren Luquan
Source:
Industrial & Engineering Chemistry Research 2016 v.55 no.10 pp. 2704-2712
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; atomic force microscopy; chemical composition; contact angle; copper; dodecanoic acid; engineering; gasoline; hexane; hydrophobicity; oils; petroleum; scanning electron microscopy; toluene; wettability
Abstract:
... A superhydrophobic and superoleophilic copper mesh with excellent oil–water separation efficiency was successfully fabricated via electrodeposition and then surface modification with lauric acid. The surface morphologies, chemical composition, and wettability were characterized by means of scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fo ...
DOI:
10.1021/acs.iecr.5b03503

39. A Facile Method for Delaying the Migration of Antifogging Agents in Polyethylene Films

Author:
Ke Yan; Dong Chen; Li Wang; Wantai Yang
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.20 pp. 6945-6956
ISSN:
1520-5045
Subject:
contact angle; crosslinking; greenhouses; microparticles; polyethylene; polyethylene glycol; polymerization; process design; shelf life
Abstract:
... Antifog polyethylene (PE) films are widely used as covers for greenhouse structures because they can eliminate the multiple adverse effects of the fogging phenomenon. Herein, we propose a way to enhance the shelf life of antifog PE films by delaying the migration of antifogging agents using polymer microspheres. Cross-linked poly(maleic anhydride-styrene-divinylbenzene) microspheres (PMSD) were pr ...
DOI:
10.1021/acs.iecr.2c00492

40. A Facile Method for Preparing Sticky, Hydrophobic Polymer Surfaces

Author:
Wang Xueyuan; Weiss R. A.
Source:
Langmuir 2012 v.28 no.6 pp. 3298-3305
ISSN:
1520-5827
Subject:
annealing; contact angle; droplets; evaporation; hydrophobicity; hysteresis; molecular weight; polystyrenes; silica; solvents; vapors
Abstract:
... Textured surfaces consisting of nanometer- to micrometer-sized lightly sulfonated polystyrene ionomer (SPS) particles were prepared by rapid evaporation of the solvent from a dilute polymer solution-cast onto silica. The particle textured ionomer surfaces were prepared by either spin-coating or solution-casting ionomer solutions at controlled evaporation rates. The effects of the solvent used to s ...
DOI:
10.1021/la204564b

41. A Facile Method to Modify the Characteristics and Corrosion Behavior of 304 Stainless Steel by Surface Nanostructuring toward Biomedical Applications

Author:
Thangaraj Balusamy; T. S. Nellaiappan Sankara Narayanan; Kulandaivelu Ravichandran; Lee Min Ho; Nishimura Toshiyasu
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.32 pp. 17731-17747
ISSN:
1944-8252
Subject:
contact angle; corrosion; energy; nanocrystals; plastic deformation; stainless steel; surface roughness
Abstract:
... The study addresses how surface nanostructuring of AISI 304 stainless steel (SS) by surface mechanical attrition treatment (SMAT) influences its characteristic properties and corrosion behavior in Ringer’s solution. SMAT of 304 SS induced plastic deformation, enabled surface nanocrystallization, refined the grain size, transformed the austenite phase to strain induced α′-martensite phase, increase ...
DOI:
10.1021/acsami.5b03877

42. A Green and Facile Melt Approach for Hierarchically Porous Polylactide Monoliths Based on Stereocomplex Crystallite Network

Author:
Sun Xiao-Rong; Cao Zhi-Qiang; Bao Rui-Ying; Liu Zhengying; Xie Bang-Hu; Yang Ming-Bo; Yang Wei
Source:
ACS sustainable chemistry 2017 v.5 no.9 pp. 8334-8343
ISSN:
2168-0485
Subject:
adsorbents; biodegradability; biological resistance; contact angle; crystallites; crystallization; ethylene oxide; hydrophobicity; macropores; melting; mixing; polyethylene glycol; polylactic acid; porous media; toxic substances
Abstract:
... A facile and green route to fabricate sustainable and biodegradable tridimensional interconnected hierarchically meso- and macroporous polylactide (PLA) monoliths was developed. The tunable morphologies and controllable pore sizes of the monoliths based on the stereocomplex (sc) crystallization of poly(l-lactide) (PLLA) and poly(d-lactide) (PDLA) during the melt blending process were caused by the ...
DOI:
10.1021/acssuschemeng.7b02121

43. A Hydrophobic, Self-Powered, Electromagnetic Shielding PVDF-Based Wearable Device for Human Body Monitoring and Protection

Author:
Min Sang; Sheng Wang; Shuai Liu; Mei Liu; Linfeng Bai; Wanquan Jiang; Shouhu Xuan; Xinglong Gong
Source:
ACS applied materials & interfaces 2019 v.11 no.50 pp. 47340-47349
ISSN:
1944-8252
Subject:
carbon nanotubes; contact angle; electric potential difference; electrical conductivity; electromagnetic radiation; electronics; human health; humans; hydrophobicity; information technology; jumping; monitoring; nanosilver; nanowires; nonwoven fabrics; pollution; silver; strength (mechanics)
Abstract:
... With the rapid development of the electronics, information technology, and wearable devices, problems of the power crisis and electromagnetic radiation pollution have emerged. A piezoelectric wearable textile combined with electromagnetic shielding performance has become a favorable solution. Herein, a multifunctional PVDF-based wearable sensor with both electromagnetic shielding function and huma ...
DOI:
10.1021/acsami.9b16120

44. A Kinetic Uptake Study of Roxarsone Using Cross-Linked Chitosan Beads

Author:
Mohammad H. Mahaninia; Lee D. Wilson
Source:
Industrial & engineering chemistry process design and development 2017 v.56 no.7 pp. 1704-1712
ISSN:
1520-5045
Subject:
adsorbents; adsorption; atomic force microscopy; chitosan; contact angle; crosslinking; epichlorohydrins; glutaraldehyde; physicochemical properties; process design; roxarsone; scanning electron microscopy; thermodynamics
Abstract:
... The adsorptive behavior of chitosan bead materials with roxarsone (ROX) was studied using a fixed bed column and a one-pot setup to evaluate the kinetic and thermodynamic adsorption parameters. The role of variable surface chemical properties of chitosan beads on the adsorption properties with ROX was investigated using a dye-based method, contact angle measurements, powder X-ray diffraction, scan ...
DOI:
10.1021/acs.iecr.6b04412

45. A Mathematical Model of Surfactant Spontaneous Imbibition in a Tight Oil Matrix with Diffusion and Adsorption

Author:
Fuyong Wang; Hui Cheng; Kaoping Song
Source:
Langmuir 2021 v.37 no.29 pp. 8789-8800
ISSN:
1520-5827
Subject:
adsorption; contact angle; desorption; equations; imbibition; mathematical models; oils; porosity; surface tension; surfactants
Abstract:
... Surfactants can significantly improve the oil recovery of spontaneous imbibition (SI) in unconventional oil reservoirs, but mathematical modeling of surfactant SI for displacing oil in a tight matrix is challenging because of its complex mechanism. Considering the mechanisms of surfactant diffusion and adsorption, the flow equation for the SI of surfactant solution into an oil-saturated capillary ...
DOI:
10.1021/acs.langmuir.1c01139

46. A Mechanistic Explanation of the Peculiar Amphiphobic Properties of Hybrid Organic–Inorganic Coatings by Combining XPS Characterization and DFT Modeling

Author:
Motta Alessandro; Cannelli Oliviero; Boccia Alice; Zanoni Robertino; Raimondo Mariarosa; Caldarelli Aurora; Veronesi Federico
Source:
ACS applied materials 2015 v.7 no.36 pp. 19941-19947
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; alloys; aluminum; aluminum oxide; ceramics; coatings; contact angle; durability; hydrophobicity; models; scanning electron microscopy; silicon
Abstract:
... We report a combined X-ray photoelectron spectroscopy and theoretical modeling analysis of hybrid functional coatings constituted by fluorinated alkylsilane monolayers covalently grafted on a nanostructured ceramic oxide (Al₂O₃) thin film deposited on aluminum alloy substrates. Such engineered surfaces, bearing hybrid coatings obtained via a classic sol–gel route, have been previously shown to pos ...
DOI:
10.1021/acsami.5b04376

47. A Method To Measure Internal Contact Angle in Opaque Systems by Magnetic Resonance Imaging

Author:
Zhu Weiqin; Tian Ye; Gao Xuefeng; Jiang Lei
Source:
Langmuir 2013 v.29 no.29 pp. 9057-9062
ISSN:
1520-5827
Subject:
contact angle; image analysis; magnetic resonance imaging; wettability
Abstract:
... Internal contact angle is an important parameter for internal wettability characterization. However, due to the limitation of optical imaging, methods available for contact angle measurement are only suitable for transparent or open systems. For most of the practical situations that require contact angle measurement in opaque or enclosed systems, the traditional methods are not effective. Based up ...
DOI:
10.1021/la304936a

48. A Multifunctional Smart Textile Derived from Merino Wool/Nylon Polymer Nanocomposites as Next Generation Microwave Absorber and Soft Touch Sensor

Author:
Sabyasachi Ghosh; B. Nitin; Sanjay Remanan; Yudhajit Bhattacharjee; Arup Ghorai; Tamal Dey; Tushar Kanti Das; Narayan Ch. Das
Source:
ACS applied materials & interfaces 2020 v.12 no.15 pp. 17988-18001
ISSN:
1944-8252
Subject:
Merino; biological resistance; clothing; coatings; contact angle; dipping; drying; electromagnetic interference; electronics; fabrics; graphene oxide; health services; hydrophobicity; nanosheets; nylon; pollution; polymer nanocomposites; research and development; thermal conductivity; wool
Abstract:
... In recent times e-textiles have emerged as wonder safeguards due to the great potential background in space, military, healthcare, or portable electronics. As a result, widespread research and development have been done to make significant advancement in this field, but it still remains a key challenge to use one single product with multifunctional attributes with the past performance of key chara ...
DOI:
10.1021/acsami.0c02566

49. A Multiscale Study on Shale Wettability: Spontaneous Imbibition Versus Contact Angle

Author:
Mohammed Abdul Qadeer Siddiqui; Xiao Chen; Stefan Iglauer; Hamid Roshan
Source:
Water resources research 2019 v.55 no.6 pp. 5012-5032
ISSN:
0043-1397
Subject:
contact angle; digital images; energy industry; imbibition; micro-computed tomography; oils; research; shale; water; wettability
Abstract:
... Environmental and technical issues associated with hydraulic fracturing fluid leak‐off and its low recovery in clay‐rich shale reservoirs has challenged the energy sector. One of the main hypothesized mechanisms for the uptake of fracturing fluid is fluid imbibition due to capillary forces that are a strong function of the rock's wettability. However, shale wettability estimated by contact angle a ...
DOI:
10.1029/2019WR024893

50. A Nanometer-Thick, Mechanically Robust, and Easy-to-Fabricate Simultaneously Oleophobic/Hydrophilic Polymer Coating for Oil–Water Separation

Author:
Yongjin Wang; Christopher You; Cliff Kowall; Lei Li
Source:
Industrial & engineering chemistry process design and development 2018 v.57 no.45 pp. 15395-15399
ISSN:
1520-5045
Subject:
coatings; contact angle; energy efficiency; gravity; hydrophilicity; process design; synthesis; wettability
Abstract:
... The simultaneously oleophobic/hydrophilic membranes are highly desirable in oil–water separation since both gravity and wettability promote the separation, which renders the separation process energy-efficient. Although simultaneously oleophobic/hydrophilic coatings have been reported before, the fabrication process is complicated and often involves chemical synthesis and multiple steps. Moreover, ...
DOI:
10.1021/acs.iecr.8b04071