Kinetics of acrylonitrile polymerization initiated by Y(OAr)3 in DMF

被引：0
|
作者：
Zheng Hao [1 ]
Zhang Yifeng
Shen Zhiquan
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, Inst Polymer Sci, Hangzhou 310027, Peoples R China
来源：
ACTA POLYMERICA SINICA | 2006年 / 03期
关键词：
acrylonitrile; Y(OAr)(3); polymerization kinetics;
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
It was found that yttrium tris (2, 6-di-tert-butyl-4-methyl phenolate) could be an effective initiator for polymerization of acrylonitrile. The study of influence of solvent showed that DMF with high dielectric constant gave higher conversions( > 94%) at 50 degrees C, 3 h. The kinetics of acrylonitrile polymerization using Y (OAr)(3) in DMF was investigated by the weight method. The results indicated that the rate of polymerization showed a first order relationship with respect to both the monomer ( AN) concentration and the initiator [Y (OAr)(3)] concentration, respectively, and the overall activation energy of polymerization reaction was 22.1 kJ . mol(-1) according to the Arrhenius equation. C-13-NMR studies showed that the PAN prepared had a syndiotactic triad (rr) content of 52%.
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页码：429 / 431
页数：3
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