华东师范大学学报（自然科学版） >

2020 , Vol. 2020 >Issue 2: 120 - 130

DOI: https://doi.org/10.3969/j.issn.1000-5641.201931003

化学化工

交联聚乙烯醇膜制备优化及在电吸附中的应用

  • 陈玲 ,
  • 毛疏笛 ,
  • 张奕 ,
  • 李哲 ,
  • 朴贤卿 ,
  • 孙卓 ,
  • 赵然
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  • 华东师范大学 物理与电子科学学院, 上海　200062

收稿日期: 2019-01-28

  网络出版日期: 2020-03-16

基金资助

上海市青年科技英才扬帆计划（16YF1403000）；国家自然科学基金青年基金（21606085）

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Preparation and application of crosslinked polyvinyl alcohol in electrosorption

  • CHEN Ling ,
  • MAO Shudi ,
  • ZHANG Yi ,
  • LI Zhe ,
  • PIAO Xianqing ,
  • SUN Zhuo ,
  • ZHAO Ran
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  • School of Physics and Electronic Science, East China Normal University, Shanghai　200062, China

Received date: 2019-01-28

  Online published: 2020-03-16

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摘要

采用化学交联法制备聚乙烯醇(PVA)复合膜, 研究磺基琥珀酸(SSA)交联聚乙烯醇薄膜的电容去离子行为. 磺基琥珀酸作为一种交联剂和亲水基团的给体, 可以很好地应用于聚乙烯醇膜的改性. 详细研究了制备工艺(交联剂含量, 交联温度)对复合膜电容去离子性能的影响, 并进行对比实验, 将电容去离子系统(CDI)(仅使用活性炭电极)和采用了PVA与SSA交联的膜电容去离子系统(MCDI)(电极表面覆盖离子交换膜)分别进行吸脱附运行操作. 结果表明: 当交联剂SSA的质量分数为5%, 交联温度为100 ℃时, 交联聚乙烯醇复合膜在电容去离子中的应用使电极的吸附量增强了15%左右, 电荷效率平均提高了25%.

关键词： 离子交换膜; 磺基琥珀酸; 聚乙烯醇复合膜; 电容去离子

本文引用格式

陈玲 , 毛疏笛 , 张奕 , 李哲 , 朴贤卿 , 孙卓 , 赵然 . 交联聚乙烯醇膜制备优化及在电吸附中的应用[J]. 华东师范大学学报（自然科学版）, 2020 , 2020(2) : 120 -130 . DOI: 10.3969/j.issn.1000-5641.201931003

Abstract

Sulfosuccinic acid (SSA) can be used as a crosslinking agent and a donor of a hydrophilic group when fabricating a cation exchange membrane. In this study, SSA was crosslinked with polyvinyl alcohol to form a cation exchange membrane for a capacitive deionization system. In this study, the impact of manufacturing parameters (i.e., crosslinker content, crosslinking temperature) on the deionization performance of a composite membrane were investigated in detail. A comparison was made between a capacitive deionization system (CDI) without an ion exchange membrane and a membrane capacitive deionization system (MCDI) coated with a PVA/SSA layer. The results show that the adsorption capacity and charge efficiency can be enhanced by 15% and 25%, respectively, with the PVA/SSA membrane layer; furthermore, the optimal mass fraction of SSA is 5%, and the optimal crosslinking temperature is 100 ℃.

Key words： ion-exchange membrane; sulfosuccinic acid; polyvinyl alcohol composite membrane; capacitive deionization

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