以咪唑、丙烯腈和溴辛烷等为原料,合成了新型阳离子型可聚合离子液体表面活性剂单体:氯化-1-正辛基-3-(4-丙烯酸丁酯基)咪唑(PMOIH8).以2-氯丙酰胺为引发剂,Cu0粉/三-(2-二甲氨基乙基)Me6-TREN为催化体系,采用单电子转移活性自由基聚合法对丙烯酰胺(AM)、PMOIH8进行了二元共聚合反应,合成了一种新型阳离子共聚丙烯酰胺/丙烯酸酯P(AM/PMOIH).FT-IR、MS和1H NMR分析表明,所得聚合物为目标产物,采用GPC测得聚合物的相对分子质量为2×103 ~ 14×103,相对分子质量分布Mw/Mn在1.21 ~ 1.75之间.考察了催化剂、引发剂等因素对聚合的影响.结果表明,降低催化剂用量,聚合反应速率变慢,链增长速率常数kappp由0.0168 min-1降低至0.0065 min-1,Mw/Mn由1.25 ~1.71增加至1.32 ~ 1.75,引发效率Ieff=90.24%;增加引发剂用量,Mw/Mn由1.25 ~ 1.71减小至1.21 ~1.68,kappp由0.0168 min-1增加至0.0201 min-1,Ieff增加至93.17%.
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