Pore structure control of PVDF membranes using a 2-stage coagulation bath phase inversion process for application in membrane distillation (MD)

2014 ◽  
Vol 452 ◽  
pp. 470-480 ◽  
Author(s):  
Rinku Thomas ◽  
Elena Guillen-Burrieza ◽  
Hassan A. Arafat
Keyword(s):  
Pore Structure ◽  
Phase Inversion ◽  
Membrane Distillation ◽  
Coagulation Bath ◽  
Inversion Process ◽  
Structure Control ◽  
Pore Structure Control ◽  
Phase Inversion Process

Preparation and Characterization of Cellulose Carbamate Regeneration Membrane by Supercritical Carbon Dioxide

2013 ◽  
Vol 821-822 ◽  
pp. 1031-1034
Author(s):  
Xu Wang ◽  
Hai Yan Wu ◽  
Cui Yu Yin
Keyword(s):  
Phase Inversion ◽  
Solution Concentration ◽  
Coagulation Bath ◽  
Regenerated Cellulose ◽  
Structure And Properties ◽  
Inversion Process ◽  
X Ray ◽  
Cellulose Carbamate ◽  
Phase Inversion Process

The regenerated cellulose carbamate membranes were prepared by the phase inversion process. The structure and properties of the regenerated cellulose carbamate membranes were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD) and scanning electron microscopy (SEM). Besides, the effects of the casting solution concentration and the coagulation bath concentration on the mechanical property of regenerated cellulose carbamate membrane were discussed.

scholarly journals Interconnected PVDF-CTFE hydrophobic membranes for MD desalination: effect of PEGs on phase inversion process

RSC Advances ◽  
2016 ◽  
Vol 6 (25) ◽  
pp. 20926-20937 ◽  
Author(s):  
Libing Zheng ◽  
Jun Wang ◽  
Yuansong Wei ◽  
Yong Zhang ◽  
Kun Li ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Pore Structure ◽  
Phase Inversion ◽  
Pore Distribution ◽  
Inversion Process ◽  
Hydrophobic Membranes ◽  
Interconnected Pore ◽  
Interconnected Pore Structure ◽  
Phase Inversion Process

PVDF-CTFE membrane with interconnected pore structure, narrow pore distribution, and high DCMD performance was prepared by study the effect of molecular weight and dosage of PEG.

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

Pore structure control in Ni/SiO2 catalysts with both macropores and mesopores

2007 ◽  
Vol 98 (1-3) ◽  
pp. 107-114 ◽  
Author(s):  
Ryoji Takahashi ◽  
Satoshi Sato ◽  
Satoshi Tomiyama ◽  
Tomoya Ohashi ◽  
Norifumi Nakamura
Keyword(s):  
Pore Structure ◽  
Structure Control ◽  
Pore Structure Control
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