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《中国工程科学》 >> 2014年 第16卷 第7期

基于界面聚合法在受限空间内诱导合成反渗透/纳滤复合膜的研究

杭州水处理技术研究开发中心,杭州 310012

资助项目 :国家重点基础研究开发计划项目(2009CB623402) 收稿日期: 2014-05-13 发布日期: 2014-08-12 14:23:07.000

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摘要

一种新的概念,受限空间内的界面聚合,用于研究反渗透膜(RO)/纳滤膜(NF)复合膜的合成。实验设计使用受保护的多胺单体通过延迟扩散与均苯三甲酰氯反应,获得了过渡态结构的RO/NF膜。在NF膜水相配方中加入大分子模板剂,诱导界面反应在受限空间内定向发生,将聚合物网络的聚集态由无序转变为有序,同时NF膜对盐的截留性能不变,水通量提高一倍。RO膜有机相配方中加入纳米分子筛,提升水通量超过50 %,复合膜表面结构呈现NF膜的特性,同时脱盐性能保持不变。

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