RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS(2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE)

被引：3
|
作者：
沈之荃 [1 ]
郑豪 [2 ]
机构：
[1] Institute of Polymer Science,Zhejiang University
[2] Department of Chemisthey,Zhejiang University
来源：
Chinese Journal of Polymer Science | 2007年 / 04期
基金：
中国国家自然科学基金;
关键词：
Lanthanum tris(2,6-di-rert-butyl-4-methylphenolate); 1,4-dioxan-2-one; Ring-opening polymerization;
D O I：
暂无
中图分类号：
TQ316.341 [];
学科分类号：
0805 ; 080502 ;
摘要：
The ring-opening polymerization of 1,4-dioxan-2-one (PDO) was carried out by lanthanum tris(2,6-di-tert-butyl-4-methylphenolate) (La(OAr)3) as novel single component initiator. The influences of polymerization reaction temperature and the molar ratio of monomer to initiator on the monomer conversion and molecular weight of poly(1,4-dioxan-2-one) (PPDO) were explored. PPDO with high viscosity average molecular weight of 1.95×105 can be prepared at 40℃when [PDO]/ [La(OAr)3] molar ratio was 800. Mechanism investigation shows that the polymerization proceeds through a "coordinationinsertion" mechanism with selective rupture of acyl-oxygen bond of PDO.
引用
收藏
页码：427 / 430
页数：4
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