P(AA-AMPS)–PVA/polysulfone composite hollow fiber membranes for propylene dehumidification
Journal of Membrane Science, ISSN: 0376-7388, Vol: 323, Issue: 2, Page: 395-403
2008
- 44Citations
- 39Captures
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Article Description
A series of composite hollow fiber membranes, poly(acrylic acid- co -2-acrylamido-2-methyl-1-propane sulfonic acid) (P(AA-AMPS))–poly(vinyl alcohol) (PVA) membranes as skin layers and polysulfone (PS) hollow fiber membranes as support layers, were prepared for dehumidification of propylene gas. The chemical and physical structures, including inter-components interaction, crystallinity, glass transition temperature and free volume of the membranes, were systematically characterized. Through the sorption experiments, it was found that the membrane exhibited a preferential sorption toward water, and initially the water sorption increased remarkably with P(AA-AMPS) content increasing, afterwards reached the zenith, then decreased rapidly. Dehumidification performance showed that the membrane containing 50 wt.% P(AA-AMPS) exhibited the highest permeance of 363 GPU and an infinite separation factor for 0.5 wt.% water in feed at 298 K. Permeance decreased considerably with increasing operating temperature, but increased considerably with increasing water content.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0376738808005887; http://dx.doi.org/10.1016/j.memsci.2008.06.046; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=50249177129&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0376738808005887; https://dx.doi.org/10.1016/j.memsci.2008.06.046
Elsevier BV
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