齐民华;沈琪;陈小平;

• 1:茂名学院化工学院
• 2:苏州大学化学化工系
• 3:茂名学院化工学院 广东茂名525000
• 4:苏州大学化学化工系

摘要(Abstract)：

研究了取代茚基二价稀土配合物(C5H9C9H6)2Yb(THF)2作为单组分催化剂,催化DMAEMA/MMA的共聚反应。结果表明,(C5H9C9H6)2Yb(THF)2对DMAEMA/MMA的共聚反应具有较高的催化活性,温度对共聚反应影响明显,单体配比对共聚反应的转化率影响不大,几种取代茚基二价稀土配合物都显示出较高的催化活性。其活性次序为:(C5H9C9H6)2Sm(THF)>(C2H5C9H6)2Sm(THF)2>(C5H9C9H6)2Yb(THF)2>KSm(C5H9C9H6)3(THF)3>(PhCH2C9H6)2Sm(THF)2。对聚合产物进行了热分析的表征,发现产物为两种单体的无轨共聚物。通过核磁共振技术确定了共聚物中两种单体所占的比例,并测定了(C5H9C9H6)2Yb(THF)2催化DMAEMA/MMA的共聚反应的竟聚率,其竟聚率为r1=0.98,r2=0.71。

关键词(KeyWords)： 茚基稀土配合物;甲基丙烯酸甲酯;甲基丙烯酸-N,N-二甲胺乙酯;聚合;稀土

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(20072027)

作者(Authors): 齐民华;沈琪;陈小平;

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