Synthesis and characterization of biopolymer based mixed matrix membranes for pervaporative dehydration.

Abstract

Several blend membranes were prepared from different weight ratios of polyvinyl alcohol (PVA) and hydroxyethyl cellulose (HEC) and these unfilled membranes were crosslinked with maleic acid. In a similar way mixed matrix blend membranes were also prepared by varying weight ratio of PVA and HEC with micro and nano bentonite filler in each of these blends. These membranes were used for pervaporative dehydration of 89 wt% tetrahydrofuran (THF). Three membranes designated as UF (unfilled), MF2 (containing 2 wt% micro filler) and NF2 (containing 2 wt% nano filler) showing the best results for flux and selectivity were identified. These membranes were characterized by FTIR, UV, XRD and DTA-TG and used for separation of 80-99 wt% THF from water by pervaporation. The NF2 membrane was found to show the best results in terms of flux and separation factor.

• Authors: Paramita Das, Samit Kumar Ray
• Journal: Carbohydrate polymers (Carbohydr Polym) Vol. 103 Pg. 274-84 (Mar 15 2014) ISSN: 1879-1344 [Electronic] England
• PMID: 24528730 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2013 Elsevier Ltd. All rights reserved.

Chemical References

• Biopolymers
• Furans
• Maleates
• Water
• tetrahydrofuran
• Polyvinyl Alcohol
• Cellulose
• maleic acid

Topics

• Biopolymers (chemistry)
• Cellulose (analogs & derivatives, chemistry)
• Furans (chemistry)
• Maleates (chemistry)
• Polyvinyl Alcohol (chemistry)
• Water (chemistry)