摘要
采用等离子体辉光放电技术,在以聚苯乙烯为基膜的阳离子交换膜表面接枝苯磺酸甜菜碱(SBMA)单体,制备出具有高选择透过性的阳离子交换膜。对改性前后的膜进行扫描电镜(SEM)、傅里叶红外光谱分析(FTIR)及氯离子泄漏率测试,表征膜的改性效果。结果表明:在SBMA浓度为60g/L,等离子照射强度为0.7 W/cm2,照射时间为7min,照射气体氛围为氩气的条件下,改性效果最佳。改性膜含有的活性基团明显增多,表面致密均匀,氯离子泄漏率由原膜的14%降低至2%以下。
The cation exchange membrane with high selectivity was prepared by grafting benzenesulfonic acid betaine(SBMA)on the polystyrene-based cation exchange membrane by plasma glow discharge.In order to characterize the modification of the membrane,the SEM,FTIR and chloride ion leakage rates were measured before and after the modification.The results showed that the modified effect was the best when SBMA concentration was 60 g/L,the intensity of plasma irradiation was 0.7 W/cm 2,the irradiation time was 7 min,and the irradiation gas atmosphere was argon.After modification,the active groups contained in the membrane were obviously increased and the surface density was uniform.The ion chloride leakage rate of the modified membrane decreased from 14%to 2%.
作者
黄全江
南君
王三反
李欣怡
邹信
张学敏
HUANG Quanjiang;NAN Jun;WANG Sanfan;LI Xinyi;ZOU Xin;ZHANG Xuemin(Engineering Research Center for Cold and Arid Regions Water Resource Comprehensive Utilization,Ministry of Education,Lanzhou 730070;School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2018年第2期203-206,共4页
Materials Reports
基金
国家科技支撑计划项目(2015BAE04B01)
国家自然科学基金(21466019)
关键词
苯磺酸甜菜碱
等离子体辉光放电
离子交换膜
表面改性
氯离子泄漏率
benzenesulfonic acid betaine
plasma glow discharge
ion-exchange membrane
surface modification
chloride ion leakage rate
作者简介
黄全江:男,1993年生,硕士研究生,研究方向为水处理及膜技术 E-mail:hqjspring@126.com;王三反:通信作者,男,1952年生,教授,博士研究生导师,研究方向为水资源综合利用及重金属废水处理 E-mail:Sfwang1612@163.com
