Dispersion catalytic chain transfer polymerizations of methyl methacrylate in supercritical carbon dioxide

被引：9
作者：
Wang, WX
Irvine, DJ
Howdle, SM
机构：
[1] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England
[2] Uniqema Ltd R&D Dept, Redcar TS10 4RF, England
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2005年 / 44卷 / 23期
关键词：
D O I：
10.1021/ie0502638
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
This paper describes a successful dispersion catalytic chain transfer polymerization (CCTP) of methyl methacrylate (MMA) in the presence of a transition-metal catalyst (tetraphenylcobalt-oxime boron fluoride, COPhBF (I)) in supercritical carbon dioxide (scCO(2)) using poly(dimethylsiloxane) monomethacrylate (PDMS-ma) macromonomer as a stabilizer. The final product is a dry, fine powder with controlled molecular weight and a narrow molecular weight distribution. It was found that the dispersion polymerization could reduce the activity of CCT catalyst, which can lead to facile and controlled preparation of high molecular weight vinyl-terminated macromonomers.
引用
收藏
页码：8654 / 8658
页数：5
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