用于反渗透复合膜的海绵状结构支撑膜制备研究

doi:10.11949/j.issn.0438-1157.20150161

化工学报 ›› 2015, Vol. 66 ›› Issue (10): 3991-3999.DOI: 10.11949/j.issn.0438-1157.20150161

用于反渗透复合膜的海绵状结构支撑膜制备研究

朱姝, 赵颂, 王志, 田欣霞, 时孟琪, 王纪孝

天津大学化工学院化学工程研究所, 天津化学化工协同创新中心, 化学工程联合国家重点实验室天津大学, 天津市膜科学与海水淡化技术重点实验室, 天津 300072

收稿日期:2015-02-02 修回日期:2015-06-14 出版日期:2015-10-05 发布日期:2015-10-05
通讯作者: 赵颂
基金资助:
国家自然科学基金项目(21276176,21306130)。

Investigation of sponge-like substrates for preparation of reverse osmosis composite membranes

ZHU Shu, ZHAO Song, WANG Zhi, TIAN Xinxia, SHI Mengqi, WANG Jixiao

Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering Tianjin, Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2015-02-02 Revised:2015-06-14 Online:2015-10-05 Published:2015-10-05
Supported by:
supported by the National Natural Science Foundation of China (21276176, 21306130).

摘要/Abstract

摘要：

通过调节铸膜液中聚砜浓度和非溶剂含量,浸没沉淀法制备海绵状结构的支撑膜,并在支撑膜上界面聚合制备聚酰胺反渗透复合膜。分别对支撑膜及反渗透复合膜的结构和性能进行表征,考察聚砜浓度对支撑膜结构和性能的影响,以及不同结构支撑膜对反渗透复合膜结构和性能的影响。结果显示,随着聚砜浓度的增加,支撑膜表面孔径和孔隙率下降,断面结构变致密,耐压性增强。在不同支撑膜上制备的反渗透复合膜具有不同的通量和脱盐率。综合考虑支撑膜及反渗透复合膜的性能,以聚砜浓度为15%制备的海绵状结构支撑膜更适于作为制备反渗透复合膜的支撑层。

关键词: 膜, 海绵状结构, 支撑膜, 聚砜, 反渗透

Abstract:

A series of sponge-like polysulfone substrates were fabricated by adjusting the content of PSf and water in the casting solutions. Then, the polyamide reverse osmosis composite membranes were prepared via interfacial polymerization between m-phenylenediamine and trimethyl chloride over the polysulfone substrates. The resulting substrates and reverse osmosis membranes were characterized to investigate the influence of the polysulfone concentration on the substrates properties and the effect of the substrates properties on the polyamide reverse osmosis membranes. The results showed that with increasing PSf concentration, the average surface pore size and porosity of the substrates decreased, and the resistance ability to compaction enhanced. Besides, the reverse osmosis composite membranes prepared by using different PSf substrates showed different flux and salt rejection. Considering the properties of the substrates and the polyamide reverse osmosis composite membranes, sponge-like substrate by using 15%(mass) polysulfone concentration was suitable for the preparation of reverse osmosis composite membrane.

Key words: membrane, sponge-like, substrates, polysulfone, reverse osmosis

中图分类号:

TQ028.8

朱姝, 赵颂, 王志, 田欣霞, 时孟琪, 王纪孝. 用于反渗透复合膜的海绵状结构支撑膜制备研究[J]. 化工学报, 2015, 66(10): 3991-3999.

ZHU Shu, ZHAO Song, WANG Zhi, TIAN Xinxia, SHI Mengqi, WANG Jixiao. Investigation of sponge-like substrates for preparation of reverse osmosis composite membranes[J]. CIESC Journal, 2015, 66(10): 3991-3999.

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用于反渗透复合膜的海绵状结构支撑膜制备研究

Investigation of sponge-like substrates for preparation of reverse osmosis composite membranes

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