摘要
以偶氮二异丁腈 (AIBN)为引发剂 ,研究了丙烯腈与丙烯酸甲酯在二甲基亚砜溶剂中的自由基均相溶液共聚合反应。考察了单体浓度、引发剂浓度、单体配比 ,反应温度和时间等对共聚反应的影响。分别用称重法和乌氏粘度计测定了反应的转化率和产物的相对分子质量。研究结果表明 ,制备高性能聚丙烯腈纺丝溶液最佳的反应条件是 :总单体浓度2 5 % ,AIBN占总单体浓度 1% ,反应温度为 6 0℃ ,时间为
Free radical solution copolymerization of methyl acrylate and acrylonitrile is carried out in DMSO at definite temperature using azodiisobutyronitrile(AIBN) as the initiator.The effect of concentration of monomer and initiator,reaction temperature and time on copolymerization are studied.The conversion rate of the polymerization and the relative molecular weight of the product are determined by weight method and Ubbelodhe viscosimeter.It has been shown that the ideal copolymerizing condition is the concentration of AIBN 1% at 60℃ with reaction time about 30 h when the concentration of monomer is 25%.
出处
《合成技术及应用》
2001年第4期7-9,共3页
Synthetic Technology & Application
