Precipitation copolymerization of methyl methacrylate/meth-acrylate acid in supercritical carbon dioxide

Zhang Shoucun; Wang Shengyan; Bian YujingXue MinGuo ShengweiWu Wenli

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Precipitation copolymerization of methyl methacrylate/meth-acrylate acid in supercritical carbon dioxide

机译：Precipitation copolymerization of methyl methacrylate/meth-acrylate acid in supercritical carbon dioxide

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Utilizing 2,2 '-azobis(isobutyronitrile) (AIBN) as the initiator, the copolymerization of methyl methacrylate/methacrylate acid is performed by precipitation copolymerization. The effects of pressure, initiation concentration, the methacrylic acid (MA) concentration, and small amount of water are investigated separately. The morphology and molecular weight are analyzed by scanning electron microscopy and gel permeation chromatography, respectively. The results indicates that the concentration of MA or AIBN affects the molecular weight greatly, and the maximum molecular weight reaches 213 kDa. The morphology of samples exhibits a certain degree of agglomeration. Most samples are obtained as free-flowing powder with numerous spherical bulges under a proper polymerization condition.

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来源
《Journal of Applied Polymer Science》 |2022年第20期|共9页
作者
Zhang Shoucun; Wang Shengyan; Bian YujingXue MinGuo ShengweiWu Wenli;
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作者单位

North Minzu Univ;

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原文格式 PDF
正文语种英语
中图分类高分子化合物工业（高聚物工业）;
关键词
poly (methyl methacrylate); precipitation polymerization; supercritical carbon dioxide; DISPERSION POLYMERIZATION; FAILURE; AGENTS; CO2;

Precipitation copolymerization of methyl methacrylate/meth-acrylate acid in supercritical carbon dioxide

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