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1. Smart Superhydrophobic Surface with Restorable Microstructure and Self-Healable Surface Chemistry

Author:
Pan, Shengyang; Chen, Min; Wu, Limin
Source:
ACS applied materials & interfaces 2020 v.12 no.4 pp. 5157-5165
ISSN:
1944-8252
Subject:
hydrophobicity,   etc   ; encapsulation; heat; microstructure;     Show all 4 Subjects
Abstract:
... Although self-healing superhydrophobic surfaces have aroused much attention due to their repairable wetting properties and wide applications, the realization of dual healing of both microstructure and surface chemistry remains challenging. Herein, we develop a novel superhydrophobic surface composed of a shape memory micropillar array decorated by pH-responsive capsules encapsulated with fluoroalk ...
DOI:
10.1021/acsami.9b22693

2. Effect of Extra Gas Amount on Liquid Outflow from Hydrophobic Nanochannels: Enhanced Liquid–Gas Interaction and Bubble Nucleation

Author:
Li, Mingzhe; Xu, Lijiang; Lu, Weiyi
Source:
Langmuir 2020 v.36 no.17 pp. 4682-4688
ISSN:
1520-5827
Subject:
hydrophobicity,   etc   ; energy; gases; liquids; thermodynamics;     Show all 5 Subjects
Abstract:
... Understanding liquid motion in nanoenvironment is of fundamental importance in nanofluidics-based systems. While the liquid outflow from hydrophobic nanochannels can significantly affect system performance, its underlying mechanism remains unclear so far. Here, we present an experimental study of the gas-phase effect on liquid outflow behavior from hydrophobic nanochannels in a liquid nanofoam (LN ...
DOI:
10.1021/acs.langmuir.0c00466

3. Removal of hydrocarbon contaminants from water with perfluorocarboxylated UiO-6X derivatives

Author:
DeChellis, Dante M.; Ngule, Chrispus M.; Genna, Douglas T.
Source:
Journal of materials chemistry A 2020 v.8 no.12 pp. 5848-5852
ISSN:
2050-7496
Subject:
hydrophobicity,   etc   ; droplets; perfluorooctanoic acid; solvents;     Show all 4 Subjects
Abstract:
... We report that treatment of UiO-66 and UiO-67 with perfluorooctanoic acid (PFOA) and heptafluorobutyric acid (HFBA) not only render the MOF hydrophobic but also capable of removing hydrocarbon contaminants from water. Additionally HFBA@UiO-66 can coat water droplets, yielding liquid marbles that can be placed in organic solvents without dissolution or dispersal. ...
DOI:
10.1039/c9ta11144a

4. Flexible Functional Surface for Efficient Water Collection

Author:
Liu, Ming; Peng, Zhilong; Yao, Yin; Yang, Yazheng; Chen, Shaohua
Source:
ACS applied materials & interfaces 2020 v.12 no.10 pp. 12256-12263
ISSN:
1944-8252
Subject:
hydrophobicity,   etc   ; Coleoptera; Nepenthes; lubricants; lubrication;     Show all 5 Subjects
Abstract:
... Inspired by both the water collection strategy of desert beetles and the lubrication effect of Nepenthes pitcher plants, a new flexible functional surface for water collection is designed and can be easily fabricated. Such a functional surface consists mainly of a superhydrophobic region and a hydrophobic region with infused lubricating oil. Different functional patterns can be easily manipulated ...
DOI:
10.1021/acsami.9b20222

5. Critical sliding angle of water droplet on parallel hydrophobic grooved surface

Author:
Ding, Yi; Jia, Li; Peng, Qi; Guo, Jian
Source:
Colloids and surfaces 2020 v.585 pp. 124083
ISSN:
0927-7757
Subject:
hydrophobicity,   etc   ; drainage; droplets; intrinsic factors;     Show all 4 Subjects
Abstract:
... The critical sliding angles of water droplets on grooved surfaces in parallel direction are investigated in this study. Considered the length and continuity of threephase contact line, a method to calculate the critical sliding angle of droplet in Cassie state on grooved surfaces is proposed. A definition of effective length, Lcₗ, equaled to the length component of three-phase contact line in the ...
DOI:
10.1016/j.colsurfa.2019.124083

6. Manufacture and properties of composite liquid marbles

Author:
Roy, Pritam Kumar; Binks, Bernard P.; Bormashenko, Edward; Legchenkova, Irina; Fujii, Syuji; Shoval, Shraga
Source:
Journal of colloid and interface science 2020 v.575 pp. 35-41
ISSN:
0021-9797
Subject:
hydrophobicity,   etc   ; droplets; manufacturing; oils; silicone; surface tension;     Show all 6 Subjects
Abstract:
... Liquid marbles are non-stick droplets coated with colloidal usually hydrophobic particles. We suggest that “composite” liquid marbles, i.e. bi-liquid droplets, may be prepared with water droplets coated by a thin silicone oil layer containing hydrophobic, colloidal particles.The process enabling manufacturing water marbles coated with silicone oil containing fumed fluorosilica particles is reporte ...
DOI:
10.1016/j.jcis.2020.04.066

7. Hydrophobic chemical surface functionalization of hydroxyapatite nanoparticles for naphthalene removal

Author:
Bouiahya, K.; Oulguidoum, A.; Laghzizil, A.; Shalabi, M.; Nunzi, J.M.
Source:
Colloids and surfaces 2020 v.595 pp. 124706
ISSN:
0927-7757
Subject:
hydrophobicity,   etc   ; hydrophilicity; hydroxyapatite; microstructure; models; nanoparticles; naphthalene;     Show all 7 Subjects
Abstract:
... Hydrophobic apatite monolith nanoparticles were prepared by grafting of dodecylphosphate (DP) onto hydroxyapatite. A modification in the synthesis was used to develop a hydrophobic surface in order to improve the dispersion and compatibility of organoapatite particles for the sensing and separation of hydrophobic substances. Results indicate that DP grafting onto the apatite is quantitative. Struc ...
DOI:
10.1016/j.colsurfa.2020.124706

8. A new empirical model to calculate bubble size in froth flotation columns

Author:
Ostadrahimi, Mahdi; Farrokhpay, Saeed; Gharibi, Khodakaram; Dehghani, Ali
Source:
Colloids and surfaces 2020 v.594 pp. 124672
ISSN:
0927-7757
Subject:
hydrophobicity,   etc   ; bubbles; empirical models; equipment; liquids;     Show all 5 Subjects
Abstract:
... In flotation, bubbles are responsible for carrying the hydrophobic particles to the concentrate and bubble size is one of the most effective parameters in this process. The usual method to estimate the bubble size is measuring the diameter of rising bubbles, which requires special equipment and it is time consuming. In some cases, the bubble size can be estimated by mathematical methods. In this r ...
DOI:
10.1016/j.colsurfa.2020.124672

9. UPLC-based assay to assess the hydrophobicity of Antibody-Drug Conjugate (ADC) payloads

Author:
Pysz, Ilona; Jackson, Paul J.M.; Barlow, David J.; Rahman, Khondaker Miraz; Thurston, David E.
Source:
Journal of chromatography 2020 v.1146 pp. 122075
ISSN:
1570-0232
Subject:
hydrophobicity,   etc   ; antibodies; chromatography; cytotoxicity; developmental stages;     Show all 5 Subjects
Abstract:
... Antibody-Drug Conjugates (ADCs) consist of antibodies attached to cytotoxic small molecules or biological agents (i.e., payloads) through chemical linkers which may be cleavable or non-cleavable. The development of new ADCs is challenging, particularly the process of attaching the linker-payload construct to the antibody (i.e., the conjugation process). One of the major problems associated with co ...
DOI:
10.1016/j.jchromb.2020.122075

10. Design, engineering and analytical perspectives of membrane materials with smart surfaces for efficient oil/water separation

Author:
Ali, Nisar; Bilal, Muhammad; Khan, Adnan; Ali, Farman; Iqbal, Hafiz M.N.
Source:
Trends in analytical chemistry 2020 v.127 pp. 115902
ISSN:
0165-9936
Subject:
hydrophobicity,   etc   ; emulsions; engineering; hydrophilicity; oils; wettability;     Show all 6 Subjects
Abstract:
... Effective separation of various oil-water emulsions using hydrophobic/oleophilic, hydrophilic/oleophobic or amphiphilic materials has gained high research interests. With the ease in handling operations and environmental friendliness, membrane technology remains the most prevalent technique to address the oil/water emulsion problems to achieve efficient separation. The exploitation of membrane-bas ...
DOI:
10.1016/j.trac.2020.115902

11. Physical degradation of hydrophobized sands

Author:
Lin, Hongjie; Lourenço, Sérgio D.N.
Source:
Powder technology 2020 v.367 pp. 740-750
ISSN:
0032-5910
Subject:
hydrophobicity,   etc   ; coatings; infrastructure; rapid methods; tung oil;     Show all 5 Subjects
Abstract:
... Hydrophobized sands can be used to control infiltration as barriers in ground infrastructure. As coated granular materials, the interaction between particles is assumed to damage the coatings leading to a reduction in hydrophobicity. This study provides an insight into the physical degradation of hydrophobized sands treated with Tung oil, heated Tung oil and dimethyldichlorosilane. The Micro-Deval ...
DOI:
10.1016/j.powtec.2020.04.015

12. A nonswellable gradient hydrogel with tunable mechanical properties

Author:
Xu, Pingping; Xu, Huaxiu; Yang, Yang; Wang, Xionglei; An, Wenli; Hu, Yan; Xu, Shimei
Source:
Journal of materials chemistry B 2020 v.8 no.13 pp. 2702-2708
ISSN:
2050-7518
Subject:
hydrophobicity,   etc   ; bones; crosslinking; hydrogels; hydrophilicity; mechanical properties;     Show all 6 Subjects
Abstract:
... Susceptibility of traditional hydrogels to water leads to the deterioration of their mechanical properties and dimensional instability. Inspired by bone tissues, here, we report a nonswellable gradient hydrogel with adjustable mechanical properties via a simple acid-heat treatment of polyamide-based hydrogels. Both the hydrophilicity/hydrophobicity and crosslinking degree of the gel can be simulta ...
DOI:
10.1039/d0tb00296h

13. Stochastic induction time of attachment due to the formation of transient holes in the intervening water films between air bubbles and solid surfaces

Author:
Li, Saiwei; Nguyen, Anh V.; Sun, Zhiqiang
Source:
Journal of colloid and interface science 2020 v.565 pp. 345-350
ISSN:
0021-9797
Subject:
hydrophobicity,   etc   ; air; bubbles; liquids; microscopy; silica;     Show all 6 Subjects
Abstract:
... Bubble attachment to hydrophobic solid surfaces is influenced by the liquid film instability. Inclusion of transiently formed holes within the film rather than the so-called hydrophobic force in the theory is expected to better describe and explain film rupture and triple contact line formation in the bubble–surface attachment process. The significance of surface hydrophobicity and hole formation ...
DOI:
10.1016/j.jcis.2020.01.027

14. Understanding wetting dynamics and stability of aqueous droplet over superhydrophilic spot surrounded by superhydrophobic surface

Author:
Majhy, B.; Singh, V.P.; Sen, A.K.
Source:
Journal of colloid and interface science 2020 v.565 pp. 582-591
ISSN:
0021-9797
Subject:
hydrophobicity,   etc   ; contact angle; droplets; hydrophilicity; liquids; models;     Show all 6 Subjects
Abstract:
... Patterned superhydrophilic-superhydrophobic (SHL – SHB) surfaces have shown promise in droplet-based biochemical assays. However, fundamental understanding of the behavior of liquid droplets on such patterned surfaces has not received much attention. Here, we report wetting dynamics and stability of an aqueous droplet placed over a superhydrophilic spot (θ~0°) surrounded by a superhydrophobic surf ...
DOI:
10.1016/j.jcis.2020.01.056

15. A Dynamic Interface Based on Segregation of an Amphiphilic Hyperbranched Polymer Containing Fluoroalkyl and Oligo(ethylene oxide) Moieties

Author:
Oda, Yukari; Inutsuka, Manabu; Awane, Ryo; Totani, Masayasu; Yamada, Norifumi L.; Haraguchi, Masayuki; Ozawa, Masaaki; Matsuno, Hisao; Tanaka, Keiji
Source:
Macromolecules 2020 v.53 no.7 pp. 2380-2387
ISSN:
1520-5835
Subject:
hydrophobicity,   etc   ; air; films (materials); hydrophilicity; moieties; polymers;     Show all 6 Subjects
Abstract:
... An amphiphilic hyperbranched polymer (HBP) containing both fluoroalkyl (Rf: −C₆F₁₃) pendants and oligo(ethylene oxide) (nEO) parts was synthesized as a novel type of interfacial modifier to confer dynamic features on conventional polymer films. The HBP was always segregated at the outermost region of the polymer matrix in contact with air and water phases. The former and latter were driven by the ...
DOI:
10.1021/acs.macromol.9b02064

16. Hydrophobic and Stable MXene–Polymer Pressure Sensors for Wearable Electronics

Author:
Li, La; Fu, Xiyao; Chen, Shuai; Uzun, Simge; Levitt, Ariana S.; Shuck, Christopher E.; Han, Wei; Gogotsi, Yury
Source:
ACS applied materials & interfaces 2020 v.12 no.13 pp. 15362-15369
ISSN:
1944-8252
Subject:
hydrophobicity,   etc   ; electronics; environmental impact; humans; speech; thermoplastics;     Show all 6 Subjects
Abstract:
... Ti₃C₂Tₓ MXene has exhibited great potential for use in wearable devices, especially as pressure sensors, due to its lamellar structure, which changes its resistance as a function of interlayer distance. Despite the good performance of the reported pure MXene pressure sensors, their practical applications are limited by moderate flexibility, excessively high MXene conductivity, and environmental ef ...
DOI:
10.1021/acsami.0c00255

17. Bioinspired design of amphiphilic particles with tailored compartments for dual-drug controlled release

Author:
Qin, Juanrong; Li, Zeke; Song, Botao
Source:
Journal of materials chemistry B 2020 v.8 no.8 pp. 1682-1691
ISSN:
2050-7518
Subject:
hydrophobicity,   etc   ; corolla; droplets; encapsulation; hydrogels; hydrophilicity; therapeutics;     Show all 7 Subjects
Abstract:
... Inspired by the phenomenon of water droplets hanging over rose petals, we propose a green interfacial self-assembly strategy to construct amphiphilic particles with controllable compartments for dual-drug encapsulation and controlled release. The method involves fabrication of “sticky” superhydrophobic materials, assembling superhydrophilic hydrogel beads with “sticky” superhydrophobic material in ...
DOI:
10.1039/c9tb02540e

18. Novel metal-organic super-hydrophobic surface fabricated by nanosecond laser irradiation in solution

Author:
Yang, Zhen; Liu, Xianping; Tian, Yanling
Source:
Colloids and surfaces 2020 v.587 pp. 124343
ISSN:
0927-7757
Subject:
hydrophobicity,   etc   ; aluminum; corrosion; irradiation; liquids; moieties; nanoparticles;     Show all 7 Subjects
Abstract:
... This work aims to propose a newly-emerged method using laser irradiation in liquid for the fabrication of metal-organic highly hydrophobic aluminum surface with excellent corrosion resistant performance. The corrosion results revealed that the laser-induced porous structure with ovoid-like particles, and simultaneously integration of low-free-energy functional groups (-CH₂, -CF₂ and -CF₃) contribu ...
DOI:
10.1016/j.colsurfa.2019.124343

19. A pre-wetting induced superhydrophilic/superlipophilic micro-patterned electrospun membrane with self-cleaning property for on-demand emulsified oily wastewater separation

Author:
Ying, Ting; Su, Jiafei; Jiang, Yijing; Ke, Qinfei; Xu, He
Source:
Journal of hazardous materials 2020 v.384 pp. 121475
ISSN:
0304-3894
Subject:
hydrophobicity,   etc   ; bismuth; hydrophilicity; nanoparticles; oils; polymers; wastewater;     Show all 7 Subjects
Abstract:
... In this work, a pre-wetting induced superhydrophilic/superlipophilic micro-patterned membrane with surface-loaded BiVO₄ nanoparticles (Bi/PDA@PT) was successfully prepared by electrospinning and polydopamine (PDA) surface modification technology for highly efficient emulsified oily wastewater separation. The results showed that the as-prepared membranes exhibited micro hole-patterned structures an ...
DOI:
10.1016/j.jhazmat.2019.121475

20. Introduction of Multifunctional Triphenylamino Derivatives at the Perovskite/HTL Interface To Promote Efficiency and Stability of Perovskite Solar Cells

Author:
Zhao, Baohua; Yan, Xinyu; Zhang, Teng; Ma, Xiaotong; Liu, Chengben; Liu, Heyuan; Yan, Keyou; Chen, Yanli; Li, Xiyou
Source:
ACS applied materials & interfaces 2020 v.12 no.8 pp. 9300-9306
ISSN:
1944-8252
Subject:
hydrophobicity,   etc   ; energy; organic matter; solar cells;     Show all 4 Subjects
Abstract:
... Surface passivation is a widely used approach to promote the efficiency and stability of perovskite solar cells (PSCs). In the present project, a series of new organic surface passivation molecules, which contain the same triphenylamino group with the hole transfer material of PSCs, have been synthesized. These new passivation molecules are supposed to have both “carrier transfer” capability and “ ...
DOI:
10.1021/acsami.9b21112