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Preparation and high flux of hyperbranched polysiloxane membranes for n-butanol removal from water

Authors： BAI Yunxiang, ZHU Yuanhua, ZHANG Chunfang, GU Jin, SUN Yuping

Units： The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Materials Engineering, Jiangnan University, Wuxi 214122

KeyWords： pervaporation; hyperbranched polysiloxane; n-butanol

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2013,33(3):64-69

Abstract：

Hyperbranched polysiloxane was prepared with a one-pot polymerization process of AB2 type monomer, which was used to fabricate a pervaporative membrane, HPSiO-c-PDMS, to recover n-butanol from aqueous solution. The chemical structure and morphology of the hyperbranched polysiloxane and HPSiO-c-PDMS membrane were characterized. In addition, the effect of molecular weight of PDMS on the chain structures and pervaporation performance of HPSiO-c-PDMS membranes were also systematically studied. The results indicated the degree of branching (DB) of hyperbranched polysiloxane was 0.73 and HPSiO-c-PDMS membrane has large flux and separation factor. With increasing of the molecular weight of PDMS, the separation factor increased and total flux decreased.

Funds：

国家自然科学青年基金项目（21106053）和中央高校基本科研业务费专项资金（JUSRP311A01）资助；

AuthorIntro：

作者简介：白云翔（1972-），男，内蒙古，主要研究方向，膜分离 *通讯联系人，E-mail：sunyp2003@yahoo.com.cn.

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