| 超临界CO2中PP与MAA的接枝反应 |
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| 引用本文： | 李春生,张书香,郑安呐,贾素贞.超临界CO2中PP与MAA的接枝反应[J].中国塑料,2006,20(1):79-82. |
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| 作者姓名： | 李春生 张书香 郑安呐 贾素贞 |
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| 作者单位： | [1]华东理工大学材料科学与工程学院,上海200237 [2]济南大学化学化工学院,山东济南250022 |
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| 摘 要： | 利用超临界CO2作为甲基丙烯酸（MAA）的溶剂和聚丙烯（PP）的溶胀剂，合成了MAA与PP的接枝聚合物（PP-g-MAA）。考察了单体浓度、引发剂用量、反应压力、反应时间等反应条件对接枝率的影响。结果表明：在合适的反应条件下，MAA的接枝率最高可达14．6％，而且接枝后PP颗粒的外观可以保持不变。用FT-IR、DSC以及SEM等方法对样品进行了表征。DSC曲线发现PP-g-MAA有两个熔融峰。SEM观察发现PP-g-MAA的表面比PP表面明显粗糙。
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| 关 键 词： | 超临界CO2 聚丙烯 甲基丙烯酸 接枝 |
| 文章编号： | 1001-9278（2006）01-0079-04 |
| 收稿时间： | 2005-08-11 |
| 修稿时间： | 2005-08-11 |
Grafting of Methyl Acrylic Acid onto PP in Supercritical Carbon Dioxide |
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| LI Chun-sheng, ZHANG Shu-xiang, ZHENG An-na, JIA Su-zhen.Grafting of Methyl Acrylic Acid onto PP in Supercritical Carbon Dioxide[J].China Plastics,2006,20(1):79-82. |
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| Authors: | LI Chun-sheng ZHANG Shu-xiang ZHENG An-na JIA Su-zhen |
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| Abstract: | Polypropylene (PP) was swelled with a solution of methyl acrylic acid (MAA) in supercritical CO2 and was grafted with MAA via free radical polymerization leading to PP-g-MAA, with a maximum grafting degree of 14.6 % being achieved. The effects of reaction conditions, monomer concentration, initiator concentration, supercritical CO2 pressure and reaction time on grafting ratio were studied using FT-IR and DSC. DSC showed two melting peaks. SEM revealed that surface of PP-g-MAA was coarser than that of PP. |
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| Keywords: | supercritical carbon dioxide polypropylene methyl acrylic acid grafting |
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