交联淀粉-磺甲基化聚丙烯酰胺的合成与吸水性

Syntheses and Water absorptivity of Crosslinked Starch sulfomethylated Polyacrylamide

在铈盐引发下用淀粉与丙烯酰胺共聚并进行部分交联得接技共聚物（ＣＳ－ｇ－ＰＡＭ），继之与多聚甲醛和偏重亚硫酸钠反应制备交联淀粉－磺甲基化聚丙烯酰胺（ＣＳ－ｇ－ＳＰＡＭ）．该树脂具有高吸水性，其吸水性受反应条件、单体配比、交联度、磺化程度等因素的影响．

The crosslinked graft polymer of starch polyacrylamide(CS g PAM) is prepared by the copolymerization of ceric(Ⅳ)salt.Then,crosslinked starch sulfomethy lated polyacrylamide(CS g SPAM) is prepared by the sulfomethylation of CS g PAM with paraformaldehyde and sodium sulfite.The resin has high water absorption.The factors of influenes on water absorbency such as the ratio of monomers,the centration of cross linkor and the extent of sulfomethylation is studied in the conditions of reaction.