【摘要】 采用Ce⁴⁺-聚乙烯醇（PVA）氧化还原体系作引发剂,将PVA与丙烯酰胺（AAM）接枝共聚合,得到PVA接枝聚丙烯酰胺共聚物（PVA-g-PAAM）,研究了引发剂浓度、m（AAM）/m（PVA）、反应温度和时间对接枝共聚合的影响。将PVA-g-PAAM霍夫曼（Hoffman）降解,得到PVA接枝聚乙烯铵（PVA-g-PVAM）,探讨了该自由基接枝的反应机理。所制PVA-g-PVAM的铵盐是一种新型高电荷密度聚阳离子电解质,其水溶液的导电性与浓度成正比。更多还原

【Abstract】 A graft copolymer poly（vinyl alcohol）（PVA）-g-poly（acrylamide）（PAAM）was prepared by copolymerizing PVA and acrylamide（AAM） with a redox system Ce⁴⁺-PVA as initiator.The effects of initiator concentration, molar ratio of AAM to PVA,temperature and time on graft copolymerization were investigated.PVA-g-poly-（vinyl amine）（PVAM） was obtained by Hoffman degradation of PVA-g-PAAM and mechanism of the radical polymerization was explored.The PVA-g-PVAM salt is a novel polycation electrolyte with high density charge and the conductivity of its aqueous solution is directly proportional to the concentration of PVA-g-PVAM salt.更多还原