Membrane Science and Technology

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Preparation of acrylate-vinyl triethoxysilane copolymer membranes and their swelling and adsorption properties in ethanol / water mixture

Authors： WANG Ming，DONG Yongquan*1 Tang Xinghua

Units： Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control，College of Environmental & Chemical Engineering Nanchang Hangkong University， Nanchang Jiangxi 330063

KeyWords： acrylate-vinyl triethoxysilane; copolymer membrane; swelling; diffusion coefficient

ClassificationCode：TQ31

year,volume(issue):pagination： 2011, 31(6):35-40

Abstract：

The emulsions of acrylate and vinyl triethoxysilane (VTES) were prepared by emulsion polymerization. The structure of copolymer was characterized by ATR-FTIR. The effect of ratio of VTES to acrylate on dynamic viscosity of emulsions, degree of cross linking, hydrophilicity and swelling performance of membranes were investigated, diffusion coefficients of membranes in water and ethanol were obtained according to the swelling experiments. The FTIR results indicated that organic functional silanes had been copolymerized with acrylate monomer thoroughly. With increasing ratio of VTES to acrylate, dynamic viscosity of emulsion increased, degree of cross linking and contact angle of membranes increased. Increasing concentration of ethanol or sorption temperature can improve the degree of swelling of membranes. Diffusion coefficient of membrane of 0.15 VTES loading (VTES/acrylate) in pure ethanol was 0.02309(10-4m2•s-1), the diffusion coefficient of membrane of 0.02 0.15 VTES loading (VTES/acrylate) in pure water was 0.02357 (10-4m2•s-1).

Funds：

国家自然科学基金项目（No.20866007），航空科学基金项目（ZF20081506）江西省教育厅科技项目（No.GJJ09488），南昌市科技攻关重点项（No.DA200902109）

AuthorIntro：

董永全，男（1976－），副教授/博士，从事膜材料制备及应用方面的研究.*通讯作者，email：dongyongquan@gmail.com;王鸣，（1987－），硕士研究生，研究方向：膜材料制备及应用

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