| 超临界CO2协助三单体接枝改性聚丙烯 |
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| 引用本文： | 王鉴,冉玉霞,邹恩广,董群,王洪亮.超临界CO2协助三单体接枝改性聚丙烯[J].化学学报,2009,67(10):1141-1146. |
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| 作者姓名： | 王鉴 冉玉霞 邹恩广 董群 王洪亮 |
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| 作者单位： | (大庆石油学院化学化工学院 黑龙江 大庆 163318) |
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| 基金项目： | 黑龙江省科技攻关课题 |
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| 摘 要： | 利用超临界二氧化碳(SC CO2)作为单体的溶剂和聚丙烯的溶胀剂, 通过自由基接枝聚合合成了聚丙烯与丙烯酸、甲基丙烯酸甲酯以及马来酸酐的接枝产物PP-g-(AA-MMA-MAH). 在单体的选择上采取软、硬单体复配的方式来调节链的柔韧性. 考察了溶胀条件、接枝条件以及单体配比对接枝反应的影响, 研究结果表明, PP和单体以及引发剂在7.74 MPa、47 ℃下溶胀5 h后, 75 ℃下反应3 h时接枝率为4.31%, 接枝效率可达71.83%. 产品表征说明单体均匀地接枝到聚丙烯颗粒上; 改性后聚丙烯水润湿角降低, 亲水性能得到明显改善; 接枝单体的引入提高了PP的热稳定性.
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| 关 键 词： | 超临界CO2 聚丙烯 三单体 接枝聚合 |
| 收稿时间： | 2008-8-29 |
| 修稿时间： | 2008-12-3 |
Grafting of Polypropylene with Ternary Monomer Assisted by Supercritical CO2 |
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| Wang Jian,Ran Yuxia,Zou Enguang,Dong Qun,Wang Hongliang.Grafting of Polypropylene with Ternary Monomer Assisted by Supercritical CO2[J].Acta Chimica Sinica,2009,67(10):1141-1146. |
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| Authors: | Wang Jian Ran Yuxia Zou Enguang Dong Qun Wang Hongliang |
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| Institution: | (Chemistry and Chemical Engineering College, Daqing Petroleum Institute, Daqing Heilongjiang 163318) |
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| Abstract: | Polypropylene (PP) was swelled with a solution of monomers in supercritical carbon dioxide (SC CO2), and was grafted with acrylic acid (AA), methyl methacrylate (MMA) and maleic anhydride (MAH) via free radical polymerization leading to PP-g-(AA-MMA-MAH). During monomer selection, combination of soft monomer and hard monomer was used in order to tune flexibility of grafted polymer. The effects of different experimental conditions such as impregnation conditions, reaction conditions and ratio of monomers on ... |
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| Keywords: | supercritical CO2 polypropylene ternary monomer grafting polymerization |
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