摘要
聚氧化乙烯(PEO)和聚乙烯亚胺(PEI)都是广泛应用的水溶性高分子.将PEO二端的羟基转化成活泼的溴端基,再与PEI交联,可以形成亲水性网络.使这种网络转化成季铵盐,便制得了一种新颖的阳离子型高吸水树脂.这种高吸水树脂文献中迄今未见报道.由于网络中存在的是N^+,它不会与水中Ca^(2+)、Mg^(2+)及其它重金属离子结合而丧失吸水能力.
The effects of composition of reaction system and the quantity of solvent on the yield of the crosslinking copolymer of Br terminated poly (ethylene oxide) (BrPEOBr) with poly (ethyleneimine)(PEI) were investigated. When 8. 0 g BrPEOBr was reacted with 1. 0 g PEI in 100 mL DMSO at 120℃ for 5 h, all the PEI could be converted into crosslinking copolymer, and the conversion of BrPEOBr reached 94. 3%. The copolymer (PEO-PEI) can absorb the deion-ized water 80 times its own weight. Further converting the copolymer into quaternary ammonium chloride, it can absorb the deionized water 250 times its own weight.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第4期558-560,共3页
Chemical Journal of Chinese Universities
关键词
吸水树脂
PEO/PEI
交联共聚物
Poly (ethylene oxide), Poly (ethyleneimine), Crosslinking copolymer, Quaternary ammonium chloride, Water absorption capacity
