膜科学与技术

尼龙纤维增强聚乙烯醇/聚二甲基二乙烯氯化铵阴离子交换膜的制备与性能研究

作者：腊人僖¹，比嘉充²，王苓¹

单位： 1.西华大学材料学院，成都，610039；2.山口大学理工学研究科，宇部，755-8611，日本

关键词：聚乙烯醇；聚二甲基二乙烯氯化铵；阴离子交换膜；含水率；迁移数

出版年,卷(期):页码： 2012,32(1):23-26

摘要：

本文以五种不同聚乙烯醇/聚二甲基二乙烯氯化铵配比制备了用于电透析脱盐的尼龙纤维增强的阴离子交换膜，并考察四种不同交联剂浓度的条件下对膜的性能参数：膜含水率、迁移数、膜电荷密度及膜面电阻的影响。实验结果揭示了: 膜的含水率随聚二甲基二乙烯氯化铵含量的增加而增加，随GA浓度的增加而降低；在CPC=30wt%,GA=0.05vol%时阴离子交换膜的膜电阻最低，且为4.46Ω cm2；在CPC=30wt%, GA=0.3vol%时阴离子交换膜的动态迁移数达到0.99；在CPC=20wt%和GA=0.3vol%时阴离子交换膜的膜电荷密度值为1.24mol dm-3。

In this paper five different proportions of PVA/PDADMAC was used to prepare nylon fiber reinforced anion exchange membranes for desalination by elctrodialysis method and it was investigated that the effect of four different concentration of cross-linking agents on the properties of membrane, which are water content, dynamic transport number, charge density and membrane resistance. The experimental results showed that the water content of the membrane increased with PDADMAC content and decreased with the concentration of GA. When CPC=30wt% and GA=0.05vol% its membrane resistance reached the lowest value, i.e. 4.46Ω cm2. The dynamic transport number of the membrane was 0.99 when CPC=30wt% and GA=0.3vol%. The charge density of the membrane was 1.24mol dm-3 at the factor of CPC=20wt% and GA=0.3vol%, respectively.

腊人僖，男，1984年生，西华大学硕士研究生，主要从事聚合物改性和精细化工的研究，E-mail: larenxi@hotmail.com.cn。*通讯作者：王苓，博士，教授，E-mail:wl0999@mail.xhu.edu.cn。

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