两类可聚合型季铵盐的制备及其性能研究

Preparation and Performances Research of Two Kinds of Polymerizable Quaternary Ammonium Salt

通过烯丙基氯与叔胺的SN2亲核取代反应,制备了二甲基二烯丙基氯化铵(DMDAAC)和三甲基烯丙基氯化铵(TMAAC)两种可聚合型乙烯基季铵盐。采用元素分析,FTIR,H1-NMR和C13-NMR等手段对产物的结构进行了表征。在过硫酸盐引发剂的引发下,使两类可聚合型乙烯基季铵盐分别与丙烯酸在羧甲基壳聚糖的分子链上接枝共聚后再进行交联,制得CMCTS-g-(PAA-co-PDMDAAC)及CMCTS-g-(PAA-co-TMAAC)两类新型两性聚电解质高吸水性树脂。采用FTIR对两类树脂的结构进行了表征。对所制得的两性聚电解质高吸水性树脂在不同pH值下的溶胀规律性进行了探讨。

Two kinds of polymerizable vinyl quaternary ammonium salt, namely dimethyldiallyl ammonium chloride and trimethyldiallyl ammonium chloride respectively, were prepared via the SN2 nucleophilic substitution of the allyl chloride with the tertiary amine. The structure of the prepared quaternary ammonium salts were characterized through the methods of element analysis. FTIR. H^1-NMR and C^13-NMR. Two kinds of polyampholytic superabsorhent polymer, which include CMCTS-g-（ PAA-co-PDMDAAC ） and CMCTS-g-（ PAA-co-TMAAC ） respectively, were prepared through graft copolymerization of prepared vinyl quaternary ammonium salt and acrylic acid onto the chain of carboxymethyl chitosan, initiated with persulfate and crosslinked properly. The structure of the superbasorbent polymer was characterized by FTIR. Influence of the pH value of the solution on the swelling ratio of the polyampholytic superabsorbent polymer was studied.