超声波辐照下苯乙烯与丙烯酸乙酯共聚反应的研究

Study on Ultrasonic Initiated Copolymerization of Styrene and Ethyl Acrylate

研究了超声波辐照下苯乙烯 (St)与丙烯酸乙酯 (EA)的共聚合反应。共聚产率随超声波强度、反应时间、反应环境温度和表面活性剂用量的增加而提高。超声波强度为 6 0 0W ,共聚单体浓度为 1 0 % (VSt/VEA=1 ) ,于 1 8℃下辐照 1h ,共聚产率可达 2 7.5 0 %。

Experiments with styrene and ethyl acrylate prove that copolymerization can be initiated in two comonomers with intense ultrasound. The yields of copolymer increase respectively with the rise of ultrasonic intensity, reaction time ,temperature and the amount of an anion surfactant (SDS). The yield of copolymer reaches 27.50% by irradiation of 10% V EA /V St =1 at 18?℃ with 600?W for 1?h.