New unsaturated surfactants for the dispersion polymerisation of methyl methacrylate in supercritical carbon dioxide

被引：24

作者：

Giles, MR ^{[1
]}

Howdle, SM ^{[1
]}

机构：

[1] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England

来源：

EUROPEAN POLYMER JOURNAL | 2001年 / 37卷 / 07期

关键词：

methyl methacrylate; supercritical; carbon dioxide; unsaturated stabiliser; dispersion polymerisation;

D O I：

10.1016/S0014-3057(00)00258-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This paper describes the synthesis of a siloxane based stabiliser by ring opening metathesis polymerisation of (bicyclo[2.2.1]hept-5-en-2-yl)triethoxysilane using Ru(PCy3)Cl-2(CHPh) as the initiator. The resulting polymer was then used as a stabiliser for the free radical polymerisation of methyl methacrylate in supercritical carbon dioxide (scCO(2)). The poly(methyl methacrylate) (PMMA) formed using poly((bicyclo[2.2.1]hept-5-en-2-yl)triethoxysilane) has high molecular weight and a narrow polydispersity. Under optimised conditions of dispersion polymerisation in scCO(2), discrete spherical particles of PMMA are formed with an average diameter of 2.7 mum. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1347 / 1351

页数：5

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