Structure of Chitosan Membrane and the Pervaporation of Ethanol/Water Mixtures by the Membrane

Abstract

Abstract: The present paper covers the deacetylation degree and crystallinity of chitosan membrane, the effect of the feed composition and temperature on the permselectivity of ethanol/water mixtures permeated through the chitosan membrane.The results indicate that the permselectivity of the chitosan membrane is mainly affected by the free volume in the membrane.Both high separation factor and flux were observed when the chitosan membrane was neutralized with sulphuric acid.This behavior should be attributed to the hydrophilicity of the membrane and the ap-propritate free volume in the membrane caused by ion-crosslinking.

Key words: Chitosan, Pervaporation, Membrane separation, Ethanol/water mixture

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LI Wen-jun, PAN Wen-sen, TANG Ying . Structure of Chitosan Membrane and the Pervaporation of Ethanol/Water Mixtures by the Membrane[J]. Chem. J. Chinese Universities, 1992, 13(3): 415.

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Structure of Chitosan Membrane and the Pervaporation of Ethanol/Water Mixtures by the Membrane

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