摘要
采用悬浮聚合法合成了苯乙烯(ST)-甲基丙烯酸甲酯(MMA)共聚物珠粒。研究了引发剂用量、搅拌速度、反应温度、分散剂用量、水与单体体积比对苯乙烯-甲基丙烯酸甲酯悬浮聚合的影响。结果表明,在ST用量为2.0mL、MMA用量为7.5 mL、水与单体体积比为6∶1、1 mol.L-1MgCl2溶液用量为2.5 mL、1 mol.L-1NaOH溶液用量为5 mL、引发剂BPO用量约为0.3 g、反应温度为81℃、反应时间为1.5 h、搅拌速度为300 r.min-1的优化工艺条件下,制得了颗粒大小均匀、透明度良好、产率高的苯乙烯-甲基丙烯酸甲酯共聚物珠粒。
Styrene-methyl methacrylate copolymer was prepared with styrene（ST） and methyl methacrylate（MMA） by suspension polymerization.The effects of dispersant amount,reaction temperature,initiator amount,stirring speed,volume ratio of water-monomers on the polymerization were investigated.The optimum polymerization conditions were obtained as follows： MMA amount of 7.5 mL,ST amount of 2.0 mL,volume ratio of water-monomers of 6∶1,initiator benzoyl peroxide（BPO） amount of 0.3 g or so,1 mol·L-1 MgCl2 solution of 2.5 mL,1 mol·L-1 NaOH solution of 5 mL,reaction temperature of 81℃,reaction time of 1.5 h,stirring speed of 300 r·min-1.Under above conditions,the styrene-methyl methacrylate copolymer with appropriate particle size,good transparency and high yield were prepared.
出处
《化学与生物工程》
CAS
2011年第4期80-82,共3页
Chemistry & Bioengineering
关键词
苯乙烯
甲基丙烯酸甲酯
悬浮聚合
优化
styrene
methyl methacrylate
suspension polymerization
optimization
