AM/DMC阳离子共聚物的反相乳液聚合研究

Study on the Inverse Emulsion Polymerization of AM/DMC Cationic Copolymer

以煤油作为连续相,Span-80、OP-10为乳化剂,通过反相乳液聚合法合成丙烯酰胺(AM)/甲基丙烯酰氧基乙基三甲基氯化铵(DMC)的阳离子共聚物,研究了引发剂用量、乳化剂含量、单体含量等条件的改变对共聚物特性粘数和相对分子质量的影响,确定最佳反应条件为:反应温度45℃,反应时间4 h,引发剂含量0.20%,乳化剂含量15%,n(AM):n(DMC)3:1,单体含量25%。

A kind of cationic copolymer AM/DMC was synthesized by inverse emulsion polymerization, the reaction was conducted in kerosene - water emulsion and the emulsifiers of system were Span - 80 and OP- 10.The effects of reaction conditions such as content of initiator, emulsifier and monomer on the polymer intrinsic viscosity and molecular weight were investigated. The optimal conditions were as follows： reaction temperature 45 ℃, reaction time 4h, content of initiator 0.20%, content of emulsifier 15 %, the molar ratio of AM to DMC 3：1,content of monomer 25 %.