scholarly journals Preparation of Interconnected Biomimetic Poly(vinylidene fluoride-co-chlorotrifluoroethylene) Hydrophobic Membrane by Tuning the Two-Stage Phase Inversion Process

2016 ◽  
Vol 8 (47) ◽  
pp. 32604-32615 ◽  
Author(s):  
Libing Zheng ◽  
Jun Wang ◽  
Zhenjun Wu ◽  
Jie Li ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Vinylidene Fluoride ◽  
Inversion Process ◽  
Hydrophobic Membrane ◽  
Two Stage ◽  
Poly Vinylidene Fluoride ◽  
Phase Inversion Process

A more sustainable membrane preparation using triethyl phosphate as solvent

2017 ◽  
Vol 6 (3) ◽  
Author(s):  
Tiziana Marino ◽  
Serenella Blefari ◽  
Emanuele Di Nicolò ◽  
Alberto Figoli
Keyword(s):  
Phase Inversion ◽  
Vinylidene Fluoride ◽  
Membrane Distillation ◽  
Triethyl Phosphate ◽  
Inversion Process ◽  
Solution Composition ◽  
Operational Conditions ◽  
Poly Vinylidene Fluoride ◽  
Dope Solution ◽  
Phase Inversion Process

AbstractIn this work, hydrophobic poly(vinylidene fluoride) membranes for potential membrane distillation applications, with pore sizes ranging from ~ 0.05 to ~ 0.30 μm, were prepared by employing triethyl phosphate (TEP) as a substitute to the hazardous, commonly used, toxic solvents. Membrane morphologies and properties were tailored based on the main parameters, such as the casting solution composition and the operational conditions, which affect the phase inversion process. Experimental results showed that exposure time to controlled humid air and temperature, as well as additive content in the dope solution, strongly influence the membrane formation. The use of TEP as an alternative solvent may contribute to the development of sustainable separation operations.

Microporous Membranes from an Insoluble Polyimide

1995 ◽  
Vol 60 (10) ◽  
pp. 1741-1746
Author(s):  
Jan Schauer ◽  
Miroslav Marek
Keyword(s):  
Acetic Anhydride ◽  
Phase Inversion ◽  
Amic Acid ◽  
Microporous Membranes ◽  
Inversion Process ◽  
Phase Inversion Process ◽  
Ultrafiltration Process

Poly(amic acid) prepared from 3,3',4,4'-benzophenonetetracarboxylic dianhydride and bis(4-aminophenyl) ether was used for preparation of microporous membranes by the phase inversion process. Membranes coagulated in acetic anhydride were brittle but usable for ultrafiltration. Coagulation of the poly(amic acid) in water or lower alcohols and subsequent thermal cyclocondensation led to extremely brittle polyimides, which limits their use for ultrafiltration process.

A Three-Step Model for Submicron W/O Emulsion Formation in a Transitional-Phase Inversion Process

2015 ◽  
Vol 37 (8) ◽  
pp. 1186-1191 ◽  
Author(s):  
Xiaolong Wang ◽  
Yonghong Liu ◽  
Hang Dong ◽  
Qiang Sun ◽  
Yang Shen ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Inversion Process ◽  
Step Model ◽  
Transitional Phase ◽  
Phase Inversion Process

scholarly journals Pore formation mechanism of membranes from phase inversion process

Desalination ◽  
1995 ◽  
Vol 103 (3) ◽  
pp. 233-247 ◽  
Author(s):  
Tai-Horng Young ◽  
Leo-Wang Chen
Keyword(s):  
Formation Mechanism ◽  
Pore Formation ◽  
Phase Inversion ◽  
Inversion Process ◽  
Phase Inversion Process

Design and Application of a Low-Molecular-Mass Cut-Off Poly (Ether Sulphone) Membrane

1992 ◽  
Vol 25 (10) ◽  
pp. 351-362 ◽  
Author(s):  
E. P. Jacobs ◽  
N. K. H. Strohwald ◽  
D. Koen ◽  
R. D. Sanderson
Keyword(s):  
Molecular Mass ◽  
Surface Waters ◽  
Phase Inversion ◽  
Sugar Industry ◽  
Polymer Science ◽  
Inversion Process ◽  
Commercial Scale ◽  
Manufacturing Methods ◽  
The University ◽  
Phase Inversion Process

Low-molecular-mass cut-off tubular ultrafiltration membranes have been developed at the Institute for Polymer Science at the University of Stellenbosch; the compositions and the manufacturing methods are such that these membranes can be made commercially on an industrial scale. Three membranes were designed which gave performances comparable to those of other commercial membranes. The development work comprised detailed studies of the mechanisms of the phase-inversion process, of the solvents and non-solvents used in the gelation step, and of the factors influencing the actual physical production of the membranes. The technology of producing the membranes was successfully transferred to the commercial-scale operation and the membranes have been shown to be economically productive and to show promise in removing colour contamination from natural surface waters and from process streams in the sugar industry.

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