聚乙烯醇离子交换纤维的制备和发展

Preparation and development of polyvinyl alcohol ion exchange fiber

综述以PVA(聚乙烯醇)纤维为基体的离子交换纤维的制法,包括直接化学改性、缩醛交联引入活性基和脱水再功能化3种直接功能化方法和化学引发、物理引发两种接枝共聚功能化方法.并指出高强高交换容量离子交换纤维是今后发展的重点.

Several main methods to prepare polyvinyl alcohol ion exchange fibers are introduced including three sorts of direct-functional methods which are direct-chemical modification, drawing in active radicals after acetal crosslinking and functional action after dehydrolysis, and two sorts of graft copolymerization functional methods which are chemical initiation and physical initiation. And it is pointed out that high strength and high exchange capacity ion exchange fibers are the emphasis of the development of IEF in the future.