Studies on Novel Acrylic Acid Crosslinked Chitosan Pervaporation Membrane(Ⅰ)──Membrane Structure and Crosslinking Mechanism

Abstract

Abstract: A novel acrylic acid crosslinked chitosan membrane was prepared through a homogeneous solution reaction and its crosslinking structure was investigated through swelling ratio test, tensile measurement,IRspectra and pervaporation separation of ethanol/water mixtures using four kinds of sample membranes such as uncrosslinked chitosan membrane(sample A), chitosan membrane crosslinked by acrylic acid with and without inhibitor and methyl acrylic acid(sample B,Cand D,respectively).The crosslinking is proved to be via the addition reaction of the amino group of chtotsan to the double bond of acrylic acid and the neutral reaction between the amino group and the carboxyl group of acrylic acid.

Key words: Chitosan, Acrylic acid, Crosslinking, Pervaporation, Membrane structure

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ZHONG Wei, GE Chang-Jie, CHEN Xin, LI Wen-Jun. Studies on Novel Acrylic Acid Crosslinked Chitosan Pervaporation Membrane(Ⅰ)──Membrane Structure and Crosslinking Mechanism[J]. Chem. J. Chinese Universities, 1996, 17(3): 470.

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Studies on Novel Acrylic Acid Crosslinked Chitosan Pervaporation Membrane(Ⅰ)──Membrane Structure and Crosslinking Mechanism

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