| VOCl_3/Et_3Al_2Cl_3/CCl_4溶剂体系催化乙烯丙烯共聚 |
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| 引用本文： | 张一军,封麟先,戚国荣,杨士林. VOCl_3/Et_3Al_2Cl_3/CCl_4溶剂体系催化乙烯丙烯共聚[J]. 高分子学报, 1993, 0(5): 541-548 |
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| 作者姓名： | 张一军 封麟先 戚国荣 杨士林 |
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| 作者单位： | 浙江大学化学系，浙江大学化学系，浙江大学化学系，浙江大学化学系 杭州，邮政编码:310027，杭州，邮政编码:310027，杭州，邮政编码:310027，杭州，邮政编码:310027 |
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| 摘 要： | 本文以VOCl_3/Et_3Al_2Cl_3为催化剂,在CCl_4溶剂中进行乙烯共聚反应。在聚合过程中,发生一异常的颜色突变现象。颜色突变后,体系催化聚合生成分子量很低的产物。从聚合物的结构表征及机理探讨表明:颜色突变后,体系产生了新的活性中心,催化机理发生了转变——由配位机理转变为阳离子机理。
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| 关 键 词： | VOCl_3/Et_3Al_2Cl_3 催化剂 乙烯 丙烯 聚合机理 CCl_4溶剂 |
| 收稿时间： | 1991-08-26 |
COPOLYMERIZATION OF ETHYLENE AND PROPYLENE IN CC14 SOLVENT WITH VOCl3/Et3Al2Cl3 CATALYST SYSTEM |
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| ZHANG Yi-jun,FENG Lin-xian,QI Guo-rong,YANG Shi-lin. COPOLYMERIZATION OF ETHYLENE AND PROPYLENE IN CC14 SOLVENT WITH VOCl3/Et3Al2Cl3 CATALYST SYSTEM[J]. Acta Polymerica Sinica, 1993, 0(5): 541-548 |
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| Authors: | ZHANG Yi-jun FENG Lin-xian QI Guo-rong YANG Shi-lin |
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| Affiliation: | Chemistry Department; Zhejiang University; Hangzhou; Post code: 310027 |
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| Abstract: | In the copolymerization of ethylene and propylene with Ziegler-Natta catalyst VOCl3/ Et3Al2Cl3, when CCl4 was used as polymerization solvent, there occurred a sudden color change in the polymerization process. After the color change, low molecular weight polymer was obtained. Structure characterization and mechanism study showed that, after the color change, new active center formed and polymerization changed from coordination to cationic mechanism. |
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| Keywords: | VOCl3/Et3Al2Cl3 catalyst、 Ethylene、Propylene、 Polymerization mechanism、 CCl4 solvent |
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