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

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

来源：

Chinese Journal of Polymer Science | 2007年 / 04期

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：

摘要：

<正>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

页码：427 / 430

页数：4