| 苯乙烯Ziegler-Natta聚合扩散控制动力学研究 |
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| 引用本文： | 杨士林,范志强,封麟先. 苯乙烯Ziegler-Natta聚合扩散控制动力学研究[J]. 高分子学报, 1987, 0(5): 347-351 |
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| 作者姓名： | 杨士林 范志强 封麟先 |
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| 作者单位： | 浙江大学化学系 杭州(杨士林，范志强)，浙江大学化学系 杭州(封麟先) |
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| 摘 要： | 本文研究苯乙烯在TiCl_3-Al(C_2H_5)_3催化下于甲苯、正庚烷或甲苯-正庚烷混合物介质中的聚合动力学。提出了一个含催化剂球形聚合物颗粒中发生单体扩散控制聚合的模型,导出的式子统一解释了不同介质中扩散阻力造成的不同程度的速率表减,定量说明了在聚笨乙烯良溶剂中聚合时扩散阻力小于在不良溶剂中时。
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| 关 键 词： | 苯乙烯 齐格勒-纳塔催化剂 聚合扩散效应 动力学分析 |
| 收稿时间： | 1987-04-04 |
STUDIES ON THE DIFFUSION CONTROLLED KINETICS OF STYRENE ZIEGLER-NATTA POLYMERIZATION |
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| YANG Shi-lin,FAN Zhi-qiang,FENG Lin-xian. STUDIES ON THE DIFFUSION CONTROLLED KINETICS OF STYRENE ZIEGLER-NATTA POLYMERIZATION[J]. Acta Polymerica Sinica, 1987, 0(5): 347-351 |
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| Authors: | YANG Shi-lin FAN Zhi-qiang FENG Lin-xian |
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| Affiliation: | Department of Chemistry; Zhejiang University; Hangzhou |
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| Abstract: | The kinetics of styrene polymerization on TiCl3-Al(C2H5)3 catalysts in toluene, n-heptane or toluene-n-heptane mixtures were studied. A mathematical model of monomer diffusion controlled polymerization in globle polymer particles containing catalyst was designed, which explained quantitatively the decay of polymerization rate caused by diffusion barrier and the different rate decays in different mediums. The kinetic curves treated with the model show that polymerizations in good solvent for polystyrene are less diffusion controlled than in non-solvent, and the catalyst containing particles in good solvent systems are smaller than in the non-solvent systems. |
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| Keywords: | Styrene Ziegler-Nata Catalyst Polymerization diffusion effects kinetic analysis |
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