中华医学超声杂志

应用化学 ›› 1993, Vol. 0 ›› Issue (4): 1-4.

• 研究论文 •    下一篇

甲基丙烯酸丁酯的Nd(Oct)3-Al(i-Bu)3配合催化聚合

孙俊全, 王光明, 沈之荃   

  1. 浙江大学高分子科学与工程系 310027 杭州
  • 收稿日期:1992-12-02 修回日期:1993-03-15 出版日期:1993-08-10 发布日期:1993-08-10
  • 基金资助:
    浙江大学科学基金资助项目

COORDINATION POLYMERIZATION OF BUTYL METHACRYLATE WITH Nd(Oct)3-Al(i-Bu)3

Sun Junquan, Wang Guangming, Shen Zhiquan   

  1. Department of Polymer Science and Engineering, Zhejiang University, 310027 Hangzhou
  • Received:1992-12-02 Revised:1993-03-15 Published:1993-08-10 Online:1993-08-10

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摘要： 甲基丙烯酸丁酯(BMA)在2-乙基己酸钕[Nd(Oct)3]和三异丁基铝[Al(i-Bu)3]配合催化下的聚合反应结果表明。以正己烷和石油醚为溶剂的聚合转化率高于甲苯和四氢呋喃体系。4种不同配体的钕盐的聚合转化率差别不大。但是,以Nd(Oet)3-Al(i-Bu)3为催化剂时聚甲基丙烯酸丁酯的分子量最高。聚合反应速度与单体浓度和催化剂浓度均成一次方关系。甲基丙烯酸丁酯的聚合反应活化能为47.40kJ/mol。

关键词: 甲基丙烯酸丁酯, 配位聚合, 钕配合物, Ziegler-Natta催化剂

Abstract: In the polymerization of butyl methacrylate catalyzed by Nd(Oct)3-Al(i-Bu)3, the conversion in hexane and petroleum ether was found to be higher than that observed in toluene and tetrahydrofuran. The combination of Al(i-Bu)3 with Nd(Oct)3 gave the polymer of higher molecular weight than other Nd-complexes:Nd(P204)3, Nd(P507)3 and Nd(naph)3. Kinetics study showed that the rate of polymerization is first order with respect to the monomer and catalyst concentration. The activation energy of polymerization of butyl methacrylate is 47.4kJ/mol.

Key words: butyl methacrylate, coordination polymerization, neodymium complex, Ziegler-Natta catalyst

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