Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 136, Issue 7, Pages -Publisher
WILEY
DOI: 10.1002/app.47060
Keywords
membranes; separation techniques; thermoplastics
Categories
Funding
- Science and Engineering Research Board (SERB) of the Department of Science and Technology (DST), New Delhi [SR/FTP/PS-123/2012]
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Cage - structured polyhedral oligomeric silsesquioxane (POSS) molecules were used as modifiers in the fabrication of poly(vinyl alcohol) (PVA) membrane for the separation of an azeotropic mixture of tetrahydrofuran (THF) and water system. Poly(ethylene glycol) and anionic octa(tetramethyl ammonium)-functionalized POSS were used for this study. The membranes exhibited excellent water selectivity and permeance because of their preferential interactions toward water molecules in the azeotropic THF-water mixture. In the presence of poly(ethylene glycol)-POSS and anionic octa(tetramethyl ammonium)-POSS, the PVA membrane exhibited a significant increase in selectivity. A modified Maxwell-Stefan equation was used for the computation of the theoretical flux, which was compared with the experimental values. (c) 2018 Wiley Periodicals, Inc.
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