Studies on Pervaporation Behavior of CA and Its Blend Membranes——Dependence of Permeation Flux on Viscosity Slope Coefficient

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (9): 1801.

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Studies on Pervaporation Behavior of CA and Its Blend Membranes——Dependence of Permeation Flux on Viscosity Slope Coefficient

QIAN Jin-Wen¹, MIAO Yi-Min¹, WANG Li-Na¹, ZHANG Lin², CHEN Huan-Lin²

1. Department of Polymer Science and Engineering;
2. Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China

Received:2001-07-27 Online:2002-09-24 Published:2002-09-24

Abstract

Abstract: Viscosity behavior of cellulose acetate(CA) and its blends in different solvents has been studied. The pervaporation behavior of their membranes from the corresponding solvents has been measured for separating methanol/methyl ter-butyl ether(MeOH/MTBE) mixture. It was found that the permeation flux (J) of the membranes is reciprocal to the viscosity slope coefficient (b) in its dilute solutions.

Key words: Dilute-solution of polymer, Viscosity behavior, Pervapoartion, CA membrane, Blend membrane

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QIAN Jin-Wen, MIAO Yi-Min, WANG Li-Na, ZHANG Lin, CHEN Huan-Lin. Studies on Pervaporation Behavior of CA and Its Blend Membranes——Dependence of Permeation Flux on Viscosity Slope Coefficient[J]. Chem. J. Chinese Universities, 2002, 23(9): 1801.

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Studies on Pervaporation Behavior of CA and Its Blend Membranes——Dependence of Permeation Flux on Viscosity Slope Coefficient

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