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Preparation and characterization of CMCS/PVA blend membranes and its sorption and pervaporation performance (I)

✍ Scribed by Jiang-Nan Shen; Hui-Min Ruan; Cong-Jie Gao

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
151 KB
Volume
114
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Novel pervaporation (PV) membranes for ethanol dehydration were prepared by blend poly(vinyl alcohol) (PVA) and carboxymethyl chitosan (CMCS), followed by the crosslinking reaction with glutaraldehyde; the structure and miscibility of the blend membranes were characterized by Fourier transform infrared, X‐ray diffraction, and differential scanning calorimetry; the results indicated that the blends were miscible. The effect of feed concentration, operation temperature, crosslinking agent content, etc. on sorption performance and PV performance of the blend membrane is investigated. The membrane of CMCS/PVA blend ratio of 8 : 2 exhibited a high separation factor of 2959 with a reasonably high water flux value of 0.14 kg m^βˆ’2^h^βˆ’1^ at the azeotropic feed composition (95 wt % of ethanol) at a temperature of 45Β°C. Β© 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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