文章信息/Info

Title:

Progress in Positively Charged Nanofiltration Membrane of Chitosan

作者:

 李浩; 關毅鵬; 曹震

 （國家海洋局天津海水淡化與綜合利用研究所，天津 300192）

Author(s):

LI Hao;  GUAN Yipeng;  CAO Zhen

The Institute of Seawater Desalination and Multipurpose Utilization, Tianjin 300192, China

關鍵詞:

殼聚糖; 荷正電; 納濾膜; 膜制備; 膜應用

DOI:

10.7502/j.issn.1674-3962.2016.03.11

文獻標志碼:

A

摘要:

目前商業(yè)化的納濾膜多為荷負電，然而在某些特定領域，荷負電膜因污染嚴重而不能勝任，因此荷正電納濾膜的研究越來越受到關注和重視。殼聚糖是一種資源豐富、價格低廉的天然高分子化合物，具有良好的成膜性，并且殼聚糖分子鏈中具有大量氨基，它所形成的納濾膜帶有正電荷，如果能夠利用這種材料制備荷正電納濾膜，在工業(yè)上將具有重要意義。目前，殼聚糖荷正電納濾膜得到了廣泛研究。對復合法、界面聚合法、共混法、化學接枝法、等離子體法制備荷正電殼聚糖納濾膜進行了綜述。同時相關應用研究表明，殼聚糖荷正電納濾膜可以用于單多價離子分離、海水淡化預處理、降低廢水硬度等領域，應用前景廣闊。最后對殼聚糖荷正電納濾膜未來的發(fā)展趨勢進行了展望，通過關鍵問題的突破，期待殼聚糖荷正電納濾膜早日實現(xiàn)商業(yè)化。

Abstract:

Most of the commercial nanofiltration membrane is generally negatively charged. However, in certain areas, negatively charged nanofiltration membrane can not be employed because of membrane fouling. So positively charged nanofiltration membrane research is given more and more concern and attention. Chitosan, a abundant and low cost natural biopolymer, has good film forming properties. Chitosan nanofiltration membrane is positively charged because of amino groups on chitosan molecular chain. Therefore, the application of chitosan in positively charged nanofiltration 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 nanofiltration membrane of chitosan , such as composite method, interfacial polymerization, blending method, graft reaction, plasma method. Research shows that the chitosan nanofiltration membrane can be generally used in selective separation of different electrolytes, seawater desalination pretreatment, the hardness removal of waste�瞱ater. 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 membrane can be achieved.