邓剑如,钟隆,庞爱民,唐根,崔敏.H2O2/FeCl3在缺电子类烯烃 自由基聚合中的应用研究[J].湖南大学学报:自然科学版,2019,(12):90~97
H2O2/FeCl3在缺电子类烯烃 自由基聚合中的应用研究
Research on Application of H2O2 /FeCl3 in the Free Radical Polymerization of Electron-Deficient Olefin
  
DOI:
中文关键词:  自由基聚合  缺电子类烯烃  环保  引发剂
英文关键词:free radical polymerization  electron-deficient olefin  environmental protection  initiator
基金项目:
作者单位
邓剑如,钟隆,庞爱民,唐根,崔敏 (湖南大学 化学化工学院湖南 长沙 410082) 
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中文摘要:
      介绍了一种用于缺电子类烯烃自由基聚合的引发体系,此引发体系使用H2O2和FeCl3两种经济、环保的原料,实现了丙烯酸、甲基丙烯酸等水溶性单体在水中的自由基聚合,同时实现了丙烯腈在水中的连续水相沉淀聚合及在DMSO、DMF中的自由基聚合. 结果表明,该引发体系在较低的引发剂浓度和较低的反应温度(30 ~ 60℃)下,合成的聚丙烯酸钠分子量在1.0 × 106 ~ 2.0 × 106之间,聚甲基丙烯酸钠分子量在1.0 × 105 ~ 1.7 × 105之间,且均具有较低的分子量分布(Mw /Mn = 1.1 ~ 1.4)和较好的转化率(>90%);合成的聚丙烯腈分子量在2.0 × 104 ~ 8.0 × 104之间,转化率最高可达94.1%.
英文摘要:
      This study introduces an initiator system applied in the free radical polymerization of electron-deficient olefin,which uses two kinds of economic and environmental benign raw materials,namely H2O2 and FeCl3,and successfully realizes the free radical polymerization of water-soluble monomer like acrylic acid and methacrylic acid in water. Meanwhile,it also realizes the continuous aqueous precipitation polymerization of acrylonitrile in water and free radical polymerization in DMSO and DMF. The results indicate that at a relatively low initiator concentration and low reaction temperature (30~60 ℃),the molecular weight of sodium polyacrylate synthesized by the initiator system ranges between 1.0×106 and 2.0×106,while the molecular weight of sodium polymethacrylate ranges between 1.0×105 and 1.7×105,featuring low molecular weight distribution(Mw /Mn =1.1~1.4) and high conversion(>90%);the molecular weight of polyacrylonitrile ranges between 2.0×104 and 8.0×104,and the conversion is as high as 94.1%.
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