膜科学与技术

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Preparation and performance of copoly(phthalazinone biphenyl ether sulfone) composite forward osmosis membranes

Authors： LIU Peng, ZHANG Shou-hai, WANG Tao, DING Rong, WANG Zhen-lin, JIAN Xi-gao

Units： Department of Polymer Science and Materials, Dalian University of Technology, Liaoning High Performance Polymer Engineering Research Center, Liaoning Key Laboratory of Polymer Science and Engineering, Dalian116024, China

KeyWords： copoly(phthalazinone biphenyl ether sulfone); forward osmosis; hollow fiber; composite membrane; interfacial polymerization

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(4):7-13

Abstract：

Copoly(phthalazinone biphenyl ether sulfone) (PPBES) polymer were used as the membrane materials for the fabrication of hollow fiber substrate membranes. Novel polyamide composite forward osmosis (FO) hollow fiber membranes were fabricated via interfacial polymerization method on the lumen side of the substrate membranes. Effect of casting solution compositions and interfacial polymerization preparation techniques on the morphologies and performance of composite FO membranes was investigated, respectively. The addition of glycol in the casting solution changed the structures and performance of PPBES hollow fiber substrate membranes. The structures and performance of PPBES substrate membranes affected the morphologies of polyamide active layer and the performance of composite FO membranes. The surface morphologies of the polyamide active layer were altered with the change of MPD concentrations, which could affect the performance of composite FO membranes. The water flux and Js/Jv ratio of composite membranes decreased significantly when MPD concentration varied from 0.5% to 2%, and then changed slightly when the MPD concentration exceeded 2%. The water flux of FO membranes improved significantly from 20.3 L/m2h to 34.0 L/m2h without significant changes of Js/Jv ratio when the feed solution temperature increased from 25 °C to 80 °C. The novel composite FO membrane exhibited good thermal stability.

Funds：

大连市科技计划项目（2014J11JH127）

AuthorIntro：

作者简介：刘鹏 (1987—)，男，山东省日照市人，博士研究生，主要从事正渗透膜材料的研究. * 通讯联系人：张守海教授zhangshh@dlut.edu.cn；蹇锡高教授jian4616@dlut.edu.cn。

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