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You searched for: Subject term mixing Remove constraint Subject term: mixing Subject term contact angle Remove constraint Subject term: contact angle
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1. A molecular to macro level assessment of direct contact membrane distillation for separating organics from water

Author:
Sreekiran Pillai; Adriano Santana; Ratul Das; Buddha R. Shrestha; Edelberto Manalastas; Himanshu Mishra
Source:
Journal of membrane science 2020 v.608 pp. 118140
ISSN:
0376-7388
Subject:
adsorption; air; artificial membranes; coatings; contact angle; distillation; ethanol; fermentation; fouling; heat treatment; hydrophobicity; mica; mixing; molecular dynamics; perfluorocarbons; simulation models; sodium chloride; wastewater treatment; water reservoirs; water solubility; water vapor
Abstract:
... The removal of water-soluble organics from aqueous feeds is required in numerous practical applications, including bioresource processing, fermentation, and wastewater treatment. To this end, direct contact membrane distillation (DCMD) has been proposed as a separation technology. DCMD utilizes hydrophobic membranes – typically, comprising perfluorocarbons – which, when placed between a warm feed ...
DOI:
10.1016/j.memsci.2020.118140

2. Biodegradable Polymer Blends Based on Thermoplastic Starch

Author:
Vesna Ocelić Bulatović; Vilko Mandić; Dajana Kučić Grgić; Antonio Ivančić
Source:
Journal of polymers and the environment 2021 v.29 no.2 pp. 492-508
ISSN:
1566-2543
Subject:
biodegradability; biodegradation; contact angle; cost effectiveness; economic sustainability; environment; lead; mixing; polyesters; polylactic acid; starch; thermoplastics; water uptake
Abstract:
... This work considered the utilisation of environmentally friendly biodegradable materials instead of conventional polymeric materials, in order to prevent further environmental endangerment by accumulation of non-biodegradable materials. Thermoplastic starch (TPS) is an exemplary environmentally friendly biodegradable material. Blending TPS with other biodegradable polymers such as biodegradable po ...
DOI:
10.1007/s10924-020-01874-w

3. Effective recovery of oil slick using the prepared high hydrophobic and oleophilic Fe3O4 magnetorheological fluid

Author:
Feng Tian; Jian-feng Zhou; Chun-lei Shao; Hong-bo Wu; Liang Hao
Source:
Colloids and surfaces 2020 v.591 pp. 124531
ISSN:
0927-7757
Subject:
X-ray diffraction; chemical precipitation; contact angle; hydrophobicity; iron oxides; lipid content; lubrication; magnetic materials; magnetism; mixing; nanoparticles; oil spills; oils; oleic acid; scanning electron microscopy; surfactants; thermogravimetry; transmission electron microscopy; ultrasonics; vibration; wastewater; wastewater treatment
Abstract:
... Magnetorheological fluids (MRFs) have the excellent comprehensive properties and have widespread applications in lubrication, sealing, vibration reduction and wastewater treatment. When MRFs are used to recover oil from water, the Fe₃O₄ magnetic nanoparticles (MPs) in MRF are coated by a surfactant which has good hydrophobic and oleophilic properties. After the surfactant fully adsorbs the oil in ...
DOI:
10.1016/j.colsurfa.2020.124531

4. Polymer Nanocomposites Based on Poly(ε-caprolactone), Hydroxyapatite and Graphene Oxide

Author:
Gabriela S. Medeiros; Pablo A. R. Muñoz; Camila F. P. de Oliveira; Laura C. E. da Silva; Ritika Malhotra; Maria C. Gonçalves; Vinícius Rosa; Guilhermino J. M. Fechine
Source:
Journal of polymers and the environment 2020 v.28 no.1 pp. 331-342
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; cell proliferation; composite polymers; contact angle; drug delivery systems; graphene oxide; hydrophilicity; hydroxyapatite; lactones; mechanical properties; melting; mixing; polymer nanocomposites; transmission electron microscopy; zeta potential
Abstract:
... Standard and hybrid polymer nanocomposites based on poly(ɛ-caprolactone) (PCL), hydroxyapatite (HAp) and graphene oxide (GO). The GO synthetized here is made up of multilayer graphene oxide (mGO), in which up to five layers are stacked and lateral size around of 1 µm. The nanocomposites (PCL/Hap, PCL/mGO and PCL/HAp/mGO) were prepared by melt mixing in a twin-screw extruder and characterized by me ...
DOI:
10.1007/s10924-019-01613-w

5. Polysulfone metal-activated carbon magnetic nanocomposites with enhanced CO₂ capture

Author:
Muhammad Nisar; Pascal S. Thue; Myriam B. Maghous; Julian Geshev; Eder C. Lima; Sandra Einloft
Source:
RSC advances 2020 v.10 no.57 pp. 34595-34604
ISSN:
2046-2069
Subject:
behavior; carbon; carbon dioxide; contact angle; differential scanning calorimetry; exhibitions; ferromagnetism; hydrophilicity; industrial applications; magnetic properties; mixing; nanocomposites; pyrolysis; sawdust; sorption; temperature; thermogravimetry; thermoplastics; water; wood
Abstract:
... In the present study, polysulfone (PSF)-activated carbon nanocomposites were synthesized by a melt mixing technique. Here, 2 wt% activated carbon (CA, CA–Ni, and CA–Co) was used as filler, and effects on thermal, mechanical, magnetic, morphological, and carbon dioxide capture properties were studied. The pyrolysis of wood sawdust produced carbon materials activated by Co and/or Ni salt. The therma ...
DOI:
10.1039/d0ra06805e

6. Robust Hydrophobic Coatings Using Polymer Blends for the Surface Protection of Marble

Author:
Ryan Lopez; Hua Li; Marck Norret; Swaminatha Iyer; Simon Biggs; Rob Atkin
Source:
Colloids and surfaces 2020 v.599 pp. 124796
ISSN:
0927-7757
Subject:
adhesion; atomic force microscopy; coatings; contact angle; films (materials); hydrophobicity; mixing; polymers; roughness; weathering
Abstract:
... The use of marble in construction is limited by its susceptibility to water spill and weathering. Here, a series of poly (2,2,2-trifluoroethyl methacrylate) (PTFEMA) and poly (methacrylic acid) (PMAA) blend films have been coated on a marble surface to test their water spill and weathering protection capability. The morphologies of the coated polymer films on marble (i.e. surface defects and rough ...
DOI:
10.1016/j.colsurfa.2020.124796

7. Roughness-enhanced hydrophobic graphene oxide membrane for water desalination via membrane distillation

Author:
Yangyang Mao; Qingbo Huang; Baochun Meng; Kai Zhou; Gongping Liu; Annarosa Gugliuzza; Enrico Drioli; Wanqin Jin
Source:
Journal of membrane science 2020 v.611 pp. 118364
ISSN:
0376-7388
Subject:
artificial membranes; contact angle; desalination; distillation; graphene oxide; heat transfer; hydrophobicity; mixing; models; nanoparticles; salt concentration; silica; sodium chloride; sodium dodecyl sulfate; surface roughness; surfactants; temperature
Abstract:
... Novel design of hydrophobic membrane could improve the efficiency of membrane distillation (MD) technology. Owning to being easy to realize hydrophobic modification, fast radial heat transfer rate and limiting the passage of larger contaminants, hydrophobic graphene oxide (GO) membrane shows potential for MD process. In this work, we reported on a new type of nanoparticles intercalated GO membrane ...
DOI:
10.1016/j.memsci.2020.118364

8. The effects of polymer modified asphalt binder incorporating with chemical warm mix additive towards water quality degradation

Author:
Suzielah Rahmad; Nur Izzi Md Yusoff; Syazwani Mohd Fadzil; Khairiah Haji Badri; Ahmad Kamil Arshad; Iswandaru Widyatmoko; Sri Atmaja P. Rosyidi
Source:
Journal of cleaner production 2021 v.279 pp. 123698
ISSN:
0959-6526
Subject:
additives; air pollution; atomic absorption spectrometry; binding agents; bitumen; chemical reactions; chromium; contact angle; copper; durability; environmental impact; graphs; heavy metals; hydrophilicity; hydrophobicity; iron; leaching; lead; mixing; nickel; polymers; rain; temperature; thermogravimetry; toxicity; water pollution; water quality; water resources; zinc
Abstract:
... Naturally, asphalt binder has compacting and mixing temperatures higher than 150 °C. Both temperatures can be increased by modifying the pristine penetration grade asphalt binder with polymer. However, the warm-mix asphalt (WMA) technology contributes to lowering of these temperatures even though the possibility of environmental effect cannot be neglected. Air pollution and water contamination are ...
DOI:
10.1016/j.jclepro.2020.123698

9. Treatment mechanism of sludge containing highly viscous heavy oil using biosurfactant

Author:
Hongyang Ren; Sanyu Zhou; Bing Wang; Lei Peng; Xiaoge Li
Source:
Colloids and surfaces 2020 v.585 pp. 124117
ISSN:
0927-7757
Subject:
adsorption; asphaltenes; biosurfactants; cleaning; cleaning agents; contact angle; mixing; oil fields; oil-water interface; oils; petroleum; pollutants; sludge; storage time; surface tension; temperature; viscosity; wettability; China
Abstract:
... The mechanism and influencing factors of sludge de-oiling process collected from the Tahe oil field, a thickened oil field in China, were investigated using biosurfactant. The oily sludge was collected from ground sludge near the oil-well blowout and pipeline perforation, and the storage time about 3∼5 years, resulting in high content of heavy components in the sludge. The viscosity of the recover ...
DOI:
10.1016/j.colsurfa.2019.124117

10. A novel ion-imprinted membrane induced by amphiphilic block copolymer for selective separation of Pt(IV) from aqueous solutions

Author:
Jianxian Zeng; Chaoqiang Lv; Guoqing Liu; Zhe Zhang; Zhihui Dong; JinYan Liu; Ying Wang
Source:
Journal of membrane science 2019 v.572 pp. 428-441
ISSN:
0376-7388
Subject:
Fourier transform infrared spectroscopy; adsorption; aqueous solutions; artificial membranes; composite polymers; contact angle; copper; ions; microfiltration; mixing; nickel; nuclear magnetic resonance spectroscopy; platinum; polymerization; polymethylmethacrylate; scanning electron microscopy; solvents; thermoplastics
Abstract:
... A novel ion-imprinted blend membrane was fabricated to separate selectively platinum(IV) from aqueous media. An amphiphilic copolymer poly(methyl methacrylate)-b-poly(4-vinylpyridine) (PMMA-b-P4VP) was firstly synthesized via the reversible addition fragmentation chain transfer polymerization, and characterized by 1H NMR, FT-IR and GPC. Subsequently, poly(vinylidene fluoride) (PVDF) blend membrane ...
DOI:
10.1016/j.memsci.2018.11.016

11. An integrated electrocoagulation–nanofiltration process for carwash wastewater reuse

Author:
Z. Beril Gönder; Gökhan Balcıoğlu; Ilda Vergili; Yasemin Kaya
Source:
Chemosphere 2020 v.253 pp. 126713
ISSN:
0045-6535
Subject:
Fourier transform infrared spectroscopy; chlorides; contact angle; electrodes; energy; fouling; iron; mixing; pollutants; sludge; temperature; wastewater; water hardness; water reuse
Abstract:
... In the present work, advanced treatment of carwash wastewater with an integrated electrocoagulation–nanofiltration (EC–NF) process to reuse the treated wastewater as rinsing water was investigated. The wastewater was pretreated by EC process under various operating parameters such as temperature (25 °C, 35 °C, 45 °C), stirring speed (150 rpm, 250 rpm, 350 rpm), and electrode connection mode (MP-P, ...
DOI:
10.1016/j.chemosphere.2020.126713

12. An investigation into the kinematics of magnetically driven droplets on various (super)hydrophobic surfaces and their application to an automated multi-droplet platform

Author:
Prashant Agrawal; Kyle J. Bachus; Gabrielle Carriere; Phoenix Grouse; Richard D. Oleschuk
Source:
Analytical and bioanalytical chemistry 2019 v.411 no.21 pp. 5393-5403
ISSN:
1618-2642
Subject:
DNA; automation; coatings; contact angle; droplets; friction; hydrophobicity; kinematics; magnetic fields; mixing
Abstract:
... Magnetic actuation on digital microfluidic (DMF) platforms may provide a low-cost, less cumbersome alternative for droplet manipulation in comparison to other techniques such as electrowetting-on-dielectric. Precise control of droplets in magnetically driven DMF platforms is achieved using a low-friction surface, magnetically susceptible material/droplet(s), and an applied magnetic field. Superhyd ...
DOI:
10.1007/s00216-018-1378-y

13. Antibacterial chitosan electrostatic/covalent coating onto biodegradable poly (l-lactic acid)

Author:
Jon Andrade-Del Olmo; Leyre Pérez-Álvarez; Leire Ruiz-Rubio; José Luis Vilas-Vilela
Source:
Food hydrocolloids 2020 v.105 pp. 105835
ISSN:
0268-005X
Subject:
Escherichia coli; X-ray photoelectron spectroscopy; active food packaging; antibacterial properties; atomic force microscopy; bacteria; biodegradability; biopolymers; chitosan; coatings; contact angle; crosslinking; death; electrostatic interactions; fluorescence microscopy; hydrocolloids; mixing; molecular weight; nanoparticles; packing houses; polylactic acid; ultraviolet-visible spectroscopy; zinc oxide
Abstract:
... Biodegradable, non-toxic and transparent poly (l-lactic acid) (PLLA) biopolymer is modified in order to obtain an improved material with antibacterial properties for its use as active packaging of food. For this, PLLA films were endowed with the bactericidal effect of ZnO nanoparticles by internal blending and the bacteria contact-killing properties of the biopolymer chitosan (CHI) by superficial ...
DOI:
10.1016/j.foodhyd.2020.105835

14. Antifouling and antibacterial evaluation of ZnO/MWCNT dual nanofiller polyethersulfone mixed matrix membrane

Author:
Wen Yu Pang; Abdul Latif Ahmad; Nur Dina Zaulkiflee
Source:
Journal of environmental management 2019 v.249 pp. 109358
ISSN:
0301-4797
Subject:
antibacterial properties; antifouling activities; carbon nanotubes; contact angle; filtration; humic acids; hydrophilicity; mixing; models; porosity; scanning electron microscopy; synergism; zinc oxide
Abstract:
... The aim of this study is to evaluate the performance and antifouling properties of polyethersulfone (PES) membrane incorporated with dual nanofiller, zinc oxide (ZnO) and multi-walled carbon nanotube (MWCNT). The synergistic effect of the these nanofillers in PES membrane is studied by blending different ratio of ZnO/MWCNT nanofiller into the PES membrane. The fabricated membranes were characteriz ...
DOI:
10.1016/j.jenvman.2019.109358

15. Blending of phthalated starch and surface functionalized rice husk extracted nanosilica with LDPE towards developing an efficient packaging substitute

Author:
Deepshikha Datta; Gopinath Halder
Source:
Environmental science and pollution research international 2020 v.27 no.2 pp. 1533-1557
ISSN:
0944-1344
Subject:
adhesion; biodegradability; biodegradation; contact angle; gardens; horticultural soils; hydrophobicity; mechanical properties; mixing; nanomaterials; packaging; particle size; phthalates; polyethylene; rice hulls; silica; starch; surface area; transmittance; vegetable residues; weight loss
Abstract:
... Starch was transformed to hydrophobic starch phthalate (contact angle 109°) in order to achieve a good dispersion in LDPE matrix. Nanosilica derived from rice husk after aminopropyltrimethoxysilane functionalization was also incorporated into the blend as property-enhancing filler. The produced crystalline starch phthalate had a lower particle size of 9.87 μm and a higher surface area of 2.87 m²/g ...
DOI:
10.1007/s11356-019-06430-1

16. Cross-linking of dialdehyde carboxymethyl cellulose with silk sericin to reinforce sericin film for potential biomedical application

Author:
Peng Wang; Huawei He; Rui Cai; Gang Tao; Meirong Yang; Hua Zuo; Ahmad Umar; Yejing Wang
Source:
Carbohydrate polymers 2019 v.212 pp. 403-411
ISSN:
0144-8617
Subject:
Bombyx mori; Fourier transform infrared spectroscopy; artificial skin; biocompatibility; biocompatible materials; carboxymethylcellulose; cell adhesion; cell proliferation; contact angle; crosslinking; hemolysis; hydrophilicity; mixing; oxidation; scanning electron microscopy; schiff bases; sericin; silk; tensile strength; tissue engineering; viability
Abstract:
... Developing biomaterials based on the natural biomacromolecule silk sericin from Bombyx mori cocoon is of great interest for biomedical application. Dialdehyde carboxymethyl cellulose (DCMC) is derived from periodate oxidation of carboxy- methyl cellulose. Here, we developed a novel strategy of cross-linking of sericin with DCMC via the Schiff’s base reaction. Fourier transform infrared spectroscop ...
DOI:
10.1016/j.carbpol.2019.02.069

17. Development of a new blended polyethersulfone membrane for dye removal from synthetic wastewater

Author:
S. Ashok Kumar; G. Srinivasan; S. Govindaradjane
Source:
Environmental nanotechnology, monitoring & management 2019 v.12 pp. 100238
ISSN:
2215-1532
Subject:
barium; chlorides; contact angle; effluents; hydrophilicity; industrial wastewater; membrane permeability; methylene blue; mixing; porosity; separation; toxicity; ultrafiltration
Abstract:
... The wastewater produced from various industries like textile, paper, rubber, leather, plastics, cosmetics, pharmaceuticals contains many dyes. Most commonly found dyes in these effluents are Orange G and Methylene blue. These dyes are toxic and are harmful to the environment as well as humans. Hence they need to be removed from the wastewater. Polyethersulfone (PES) membranes are most widely used ...
DOI:
10.1016/j.enmm.2019.100238

18. Effect of Adjuvant on Glyphosate Effectiveness, Retention, Absorption and Translocation in Lolium rigidum and Conyza canadensis

Author:
Candelario Palma-Bautista; Jose G. Vazquez-Garcia; Ilias Travlos; Alexandros Tataridas; Panagiotis Kanatas; José A. Domínguez-Valenzuela; Rafael De Prado
Source:
Plants 2020 v.9 no.3 pp. -
ISSN:
2223-7747
Subject:
Conyza canadensis; Lolium rigidum; absorption; adjuvants; contact angle; crops; glyphosate; greenhouses; leaves; mixing; weeds; Mediterranean region
Abstract:
... Glyphosate retention, absorption and translocation with and without adjuvant were examined in Lolium rigidum and Conyza canadensis in greenhouse and laboratory settings to develop an understanding of the influence of the selected adjuvant on glyphosate activity. Tests on whole plants show that the dose of herbicide needed to reduce dry weight by 50% (GR50) or plant surviva ...
DOI:
10.3390/plants9030297

19. Engineering biomimetic polyurethane using polyethylene glycol and gelatin for blood-contacting applications

Author:
Piyush W. Raut; Ajinkya A. Shitole; Anand Khandwekar; Neeti Sharma
Source:
Journal of materials science 2019 v.54 no.14 pp. 10457-10472
ISSN:
0022-2461
Subject:
adhesion; adsorption; biocompatibility; biomimetics; blood platelets; cell adhesion; contact angle; gelatin; hemolysis; hydrophilicity; infrared spectroscopy; mechanical properties; medical equipment; mixing; polyethylene glycol; polyurethanes; prothrombin; surface proteins; thermal properties; thermogravimetry; thromboplastin; water uptake; wide-angle X-ray scattering
Abstract:
... Polyurethane (PU) has been utilized in the development of various blood-contacting medical devices owing to their good biocompatibility and mechanical properties. The present study highlights the design and engineering of biomimetic polyurethanes with enhanced hemocompatibility by blending it with polyethylene glycol (PEG) and modifying its surface using gelatin as a surface modifier. The physicoc ...
DOI:
10.1007/s10853-019-03643-0

20. Ethaline deep eutectic solvent as a hydrophilic additive in modification of polyethersulfone membrane for antifouling and separation improvement

Author:
Vahid Vatanpour; Ahmad Dehqan; Ali Reza Harifi-Mood
Source:
Journal of membrane science 2020 v.614 pp. 118528
ISSN:
0376-7388
Subject:
antifouling activities; artificial membranes; atomic force microscopy; bovine serum albumin; choline chloride; contact angle; dyes; ethylene glycol; hydrophilicity; infrared spectroscopy; mixing; nanofiltration; polyvinylpyrrolidone; scanning electron microscopes; scanning electron microscopy; separation; solvents; strength (mechanics)
Abstract:
... In this research, fabricating and modifying of polyethersulfone (PES) nanofiltration membrane were reported by using deep eutectic solvents (DESs) as a novel modifier for the membranes. The applied DES was produced by mixing ethylene glycol (EG) and choline chloride (ChCl). It is commonly known as ethaline. Ethaline was exploited as a hydrophilic additive into casting solution to formulate a novel ...
DOI:
10.1016/j.memsci.2020.118528