Effect of Coagulant Temperature in the Wet Phase Inversion Process on the Performance of a Novel Superphilic Asymmetric Ultra-Low Pressure Membrane (AULPM)

2011 ◽  
Author(s):  
A. Nora'aini ◽  
A. H. Nurul Syazana ◽  
A. R. Hassan ◽  
H. B. Senin ◽  
N. H. Idris
Keyword(s):  
Phase Inversion ◽  
Low Pressure ◽  
Inversion Process ◽  
Wet Phase Inversion ◽  
Phase Inversion Process

Formation and morphology studies of different polysulfones-based membranes made by wet phase inversion process

2006 ◽  
Vol 283 (1-2) ◽  
pp. 27-37 ◽  
Author(s):  
Jean-François Blanco ◽  
Julie Sublet ◽  
Quang Trong Nguyen ◽  
Pierre Schaetzel
Keyword(s):  
Phase Inversion ◽  
Inversion Process ◽  
Wet Phase Inversion ◽  
Phase Inversion Process

The Structure of PU/PNIPAAm Semi-IPN Prepared by Wet Phase Inversion Process

2010 ◽  
Vol 152-153 ◽  
pp. 1801-1804
Author(s):  
Yuan Xue ◽  
Hai Ning Lv
Keyword(s):  
Sodium Chloride ◽  
Phase Inversion ◽  
Polymer Networks ◽  
Composite Films ◽  
Interpenetrating Polymer Networks ◽  
Inversion Process ◽  
Scanning Calorimetry ◽  
Wet Phase Inversion ◽  
Phase Inversion Process ◽  
Microporous Film

N-isopropylacrylamide(NIPAAm) was dispersed in polyurethane(PU) solution and crosslinked with N,N’-methylene bisacrylamide(BIS) to form a semi-interpenetrating polymer networks. The synthesized solution was casted into water bathes with and without 0.25M sodium chloride to get a microporous film by wet phase inversion process. The ratios of BIS amount to N-isopropylacrylamide were varied. The structure and properties of polyurethane/ poly(N-isopropylacrylamide) (PU/PNIPAAm) composite film were characterized by differential scanning calorimetry (DSC) and scanning electron microscope (SEM). The swelling behavior of PU/PNIPPAm composite films was evaluated. The results showed that the addition of sodium chloride lower the LCST of PNIPAAm and the PU/PNIPAAm composite films exhibit temperature sensitivity under swollen conditions.

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.

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