摘要
以偶氮二异丁腈为引发剂 ,研究了丙烯腈与丙烯酸在二甲基亚砜中的自由基溶液共聚合反应。考察了单体质量分数 ,引发剂质量分数 ,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。用IR ,DSC和TG对产物的结构和性能进行了表征。研究结果表明 ,最佳的反应条件是 :总单体质量分数 2 2 % ,AIBN占总单体质量分数 1% ,反应温度和时间为 6 0℃和 2
Free radical solution copolymerization of acrylic acid(AA) and acrylonitrile(AN) is carried out in DMSO at 60℃ using azodiisobutyronitrile(AIBN)as initiator. The effect of monomer concentration, initiator, reaction temperature and time on copolymerization is studied. The polymerization rate is determined with conversion and the structure and properties of polymer are characterized by IR, DSC and TG. It has been shown that the ideal condition to the copolymerization should be conrolled the concentration of AIBN of 1%, at 60*!℃ with reaction time about 24 h when the concentration of monomer is 22%. In the case of P(AN co AA)s copolymers, the cyclization starts at a lower temperature and propagates at a slower rate.
出处
《化工科技》
CAS
2001年第4期1-4,共4页
Science & Technology in Chemical Industry
基金
国家自然科学基金 (5 97830 0 2 )
山东省科委资助
山东省十大高新技术项目
