| 苯乙烯在超临界CO2中的聚合反应 |
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| 引用本文： | 胡红旗,陈鸣才,李静,丛广民.苯乙烯在超临界CO2中的聚合反应[J].石油化工,1999,28(1). |
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| 作者姓名： | 胡红旗 陈鸣才 李静 丛广民 |
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| 作者单位： | 中国科学院广州化学研究所,广州,510650 |
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| 摘 要： | 研究了苯乙烯在超临界ＣＯ２中的沉淀聚合反应，探讨了ＣＯ２压力、单体的体积分数、引发剂与单体的摩尔比及添加共溶剂等条件对反应的影响。研究发现：增大ＣＯ２压力、减小苯乙烯的体积分数、增大引发剂与单体的摩尔比，都使聚合产物相对分子质量减小；在一定的ＣＯ２压力范围内，所得聚合物相对分子质量分布曲线呈双峰，而同时添加少量甲苯为共溶剂，可增强超临界ＣＯ２与苯乙烯的相容性，从而使聚合产物相对分子质量分布曲线呈单峰。
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| 关 键 词： | 苯乙烯 超临界CO2 聚合反应 |
Polymerization of Styrene in Supercritical Carbon Dioxide |
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| HU Hong-qi,CHEN Ming-cai,LI Jing,CONG Guang-min.Polymerization of Styrene in Supercritical Carbon Dioxide[J].Petrochemical Technology,1999,28(1). |
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| Authors: | HU Hong-qi CHEN Ming-cai LI Jing CONG Guang-min |
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| Abstract: | Precipitation polymerization of styrene in supercritical CO 2 was studied The effect of the pressure of CO 2,concentration of the monomer and initiator,addition of co solvent are explored It is found that increase in CO 2 pressure,decrease in concentration of styrene,and increase in initiator concentration will all decrease the molecular weight of the product Under certain range of CO 2 pressure,the GPC sketch of the product shows double peaks,and at the same time,the addition of a small amount of toluene as co solvent will make it show single peak by enhancing the compatibility of supercritical CO 2 with styrene |
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| Keywords: | styrene supercritical CO 2 polymerization |
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