摘要
目前商业化的纳滤膜多为荷负电,然而在某些特定领域,荷负电膜因污染严重而不能胜任,因此荷正电纳滤膜的研究越来越受到关注和重视。壳聚糖是一种资源丰富、价格低廉的天然高分子化合物,具有良好的成膜性,并且壳聚糖分子链中具有大量氨基,它所形成的纳滤膜带有正电荷,如果能够利用这种材料制备荷正电纳滤膜,在工业上将具有重要意义。目前,壳聚糖荷正电纳滤膜得到了广泛研究。对复合法、界面聚合法、共混法、化学接枝法、等离子体法制备荷正电壳聚糖纳滤膜进行了综述。同时相关应用研究表明,壳聚糖荷正电纳滤膜可以用于单多价离子分离、海水淡化预处理、降低废水硬度等领域,应用前景广阔。最后对壳聚糖荷正电纳滤膜未来的发展趋势进行了展望,通过关键问题的突破,期待壳聚糖荷正电纳滤膜早日实现商业化。
Most of the commercial nanofiltration membrane is generally negatively charged. However, in certain areas, neg- atively charged nanofiltration membrane can not be employed because of membrane fouling. So positively charged nanofiltra- tion membrane research is given more and more concern and attention. Chitosan, a abundant and low cost natural biopoly- mer, has good film forming properties. Chitosan nanofihration membrane is positively charged because of amino groups on ch- itosan molecular chain. Therefore, the application of chitosan in positively charged nanofihration membrane will have great significance to the industry. At present, chitosan positively charged nanofiltration membrane has been studied extensively. This paper is to summarize and analyze the preparation in positively charged nanofihration membrane of chitosan , such as composite method, interfacial polymerization, blending method, graft reaction, plasma method. Research shows that the chi- tosan nanofiltration membrane can be generally used in selective separation of different electrolytes, seawater desalination pretreatment, the hardness removal of waste-water. Finally, this paper is to forecast its developmental trend. Substantive problem breakthrough is one of the keys whether commercial application of chitosan positively charged nanofiltration mem- brane can be achieved.
出处
《中国材料进展》
CAS
CSCD
北大核心
2016年第3期237-240,共4页
Materials China
基金
中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2013-G12)
海洋经济创新发展区域示范项目(海水淡化与综合利用创新服务平台)
关键词
壳聚糖
荷正电
纳滤膜
膜制备
膜应用
chitosan
positively charged
nanofiltration membrane
membrane preparation
membrane application
