互穿网络高吸水性树脂的合成及性能

Synthesis and properties of superabsorbent with fullIPNs structure

以聚乙烯醇、丙烯酰胺和丙烯酸为原料,过硫酸铵(APS)为引发剂,N,N’-亚甲基双丙烯酰胺(MBA)为交联剂,采用溶液共聚法制备了聚乙烯醇-聚(丙烯酰胺/丙烯酸)(PVA-P(AM-co-AA))互穿网络高吸水性树脂。研究了MBA浓度、AA含量、PVA交联时间、溶液的离子强度对互穿网络高吸水树脂吸水倍率的影响。

In this paper, a series of interpenetrating polymer networks（IPNs） of poly（vinyl aeohol）（PVA） and poly（acrylamide-co-acrylic acid） （P（AM-co-AA）） were synthesized by solution polymerization of acrylamide（AM） and acrylic acid（AA） in the presence of poly（vinyl acohol） （PVA）, using ammonium persulfate as initiator and N,N＇-methylene bis（acrylamide）（MBA） as crosslinker. PVA was crosslinked with glutaraldhyde in the subsequent step. The influence of the concentration o[ MBA, the content of AA, the crosslinking time of PVA and ionic strength of the swelling medium on the water absorbency of full-IPNs were studied in detailed.