Research and preparation of chitosan/polyacrylonitrile composite UF membrane with small pore sizes

doi:10.11894/1005-829x.2018.38(2).075

Abstract

Abstract: The chitosan(CTS)/polyacrylonitrile(PAN) composite ultrafiltration(UF) membrane has been prepared by coating a crosslinking CTS layer on the surface of PAN membranes,with polyethylene glycol diglycidyl ether(PEGDGE) as crosslinking agent. The influences of concentration of crosslinking agent,crosslinking temperature and crosslinking time on CTS/PAN composite UF membrane performances are discussed,and the optimal membrane-making conditions confirmed. The results show that the retention rate of polyethylene glycol(PEG) 4000 by CTS/PAN composite UF membrane prepared under optimal conditions reaches 94% above. The harshness of membrane surfaces is lowered,hydrophilicity improved and the membrane pollution resistance strengthened.

Key words: ultrafiltration membrane, polyacrylonitrile, chitosan, retention rate

摘要： 以聚乙二醇二缩水甘油醚（PEGDGE）为交联剂，将壳聚糖（CTS）交联到聚丙烯腈（PAN）基膜的表面，制备了壳聚糖/聚丙烯腈复合超滤膜。探讨了交联剂浓度、交联温度及交联时间对CTS/PAN复合超滤膜性能的影响，确定了最佳制膜条件。结果表明，在最佳条件下所制备的CTS/PAN复合超滤膜对聚乙二醇4000的截留率达94%以上，膜面粗糙度降低，亲水性得到明显提高，增强了膜片的抗污染性能。

关键词: 超滤膜, 聚丙烯腈, 壳聚糖, 截留率

CLC Number:

TQ028.8

Yang Xingsheng, Guo Yuyang, Chen Xindi, Liang Songmiao, Zhao Zhining. Research and preparation of chitosan/polyacrylonitrile composite UF membrane with small pore sizes[J]. INDUSTRIAL WATER TREATMENT, 2018, 38(2): 75-78.

杨兴胜, 郭玉阳, 陈心笛, 梁松苗, 赵治宁. 小孔径壳聚糖/聚丙烯腈复合超滤膜的研制[J]. 工业水处理, 2018, 38(2): 75-78.

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URL: https://www.iwt.cn/EN/10.11894/1005-829x.2018.38(2).075

https://www.iwt.cn/EN/Y2018/V38/I2/75

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