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Preparation of tubular pH-responsive ceramic composite membranes

Authors： WANG Hui1，2, ZHOU Shouyong1, LI Meisheng1 , ZHAO Yijiang1, XING Weihong2

Units： 1 College of Chemistry and Chemical Engineering, Key Lab for Chemistry of Low-Dimensional Materials of Jiangsu Province，Huaiyin Normal University，Huaian 223300，China;2 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

KeyWords： tubular ZrO2 membrane; acrylic acid; pH-responsive; surface modification; chemical grafting

ClassificationCode：TQ316.313

year,volume(issue):pagination： 2012,32(4):26-31

Abstract：

Silane coupling agent KH-570 was hydrolyzed in alcohol with HCl solution as catalyst. Then the tubular ZrO2 membrane was modified with it by surface modification. Novel pH-sensitive membranes have been synthesized by grafting poly (acrylic acid) onto the silylated ceramic membranes. The silylation conditions were systematical researched. In addition, the monomer concentration was found to have a remarkable effect on the water flux and the pH-response coefficient. Furthermore, the results of TGA, XPS, SEM confirmed that the acrylic acid has been successfully grafted onto the ceramic membrane surface, and the grafted membranes exhibited reversible response to the pH change in the external solution.

Funds：

国家自然科学基金(20976067)，江苏省高校自然科学研究重大项目（09KJA530001），江苏省低维材料化学重点实验室开放课题(JSKC10076)，江苏省高校“青蓝工程”资助项目。

AuthorIntro：

王辉（1983—），女，山东烟台人，硕士研究生;通讯联系人，赵宜江，男，博士，教授，Tel：0517-83525196，E-mail：yjzhao@hytc.edu.cn

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