摘要
借助超声波辅助引发,采用反相微乳聚合法合成了丙烯酰胺(AM)-二甲基二烯丙基氯化铵(DMDAAC)的共聚物。研究了不同引发体系、超声波功率、单体、氧化还原引发剂用量及配比等因素对聚合物特性黏度和阳离子度的影响。结果表明:采用超声波辅助引发聚合,可以得到特性黏度大,阳离子度高的共聚物;超声波功率影响结果较为明显,阳离子度在超声波功率为175W时最大,为17.70%(摩尔分数),特性黏度在超声波功率为125W时最大,为3.9585dl/g;在超声波功率为125W,n(AM)∶n(DMDAAC)=6∶4,单体用量为25%(以水相总质量为基准),n引发剂∶n单体=1.12%,n氧化剂∶n还原剂=1∶1时,所得聚合物的特性黏度和阳离子度最佳,值为3.2747dl/g和17.35%。
The eopolymer （acrylamide-dimethyldiallylammonium chloride） （AM-DMDAAC） has been synthesized by inverse microemulsion polymerization by assist-initiation with ultrasonic waves. The effects of different initiatory systems, ultrasonic output power, amount and molar ratio of monomer and initiator on the intrinsic viscosity and cationic degree of the polymer were investigated. The results indicated that the synergy between initiator and ultrasonic waves led to copolymers with larger intrinsic viscosity and higher cationic degree. The influence of ultrasonic output power on polymer properties was significant： the maximum Cationic degree was 17.70 % （molar fraction） with an ultrasonic output power of 175 W, while the maximum intrinsic viscosity was 3. 9585 dl/g with an ultrasonic output power of 125 W. For an ultrasonic output power of 125 W, monomer ratio n（AM） ： n（DMDAAC） of 6：4, with the weight of monomer being 25% of that of the water phase, the molar concentration of initiator being 1.12% of that of the monomer and a molar ratio n （reducer）： n （oxidizer） of 1： 1, the optimal combination of intrinsic viscosity and cationic degree, 3.2747 dl/g and 17.35% respectively, were obtained.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第4期49-53,共5页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
关键词
丙烯酰胺
二甲基二烯丙基氯化铵
反相微乳聚合
超声波
acrylamide
dimethyldiallylammonium chloride
inverse microemulsion polymerization
ultrasonic wave
