| 丁二烯在氯化稀土-乙醇-烷基铝催化体系中的某些动力学规律 Ⅲ.NdCl_3-C_2H_5OH-AlR_3体系中的聚合动力学 |
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| 引用本文： | 扈晶余,潘恩黎,邹昌玉.丁二烯在氯化稀土-乙醇-烷基铝催化体系中的某些动力学规律 Ⅲ.NdCl_3-C_2H_5OH-AlR_3体系中的聚合动力学[J].高分子学报,1985,0(3):167-172. |
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| 作者姓名： | 扈晶余 潘恩黎 邹昌玉 |
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| 作者单位： | 中国科学院长春应用化学研究所
(扈晶余，潘恩黎)，中国科学院长春应用化学研究所(邹昌玉) |
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| 摘 要： | 本文应用氚醇淬灭法和动力学方法测定了NdCl_3-C_2H_5OH-AlR_3-丁二烯聚合体系的活性中心浓度及反应速度常数。结果表明:其活性中心浓度在05-2.8×10~(-2)mol/mol Nd内变化。固定温度时,在所研究,的范围内,其增长速度常数不随烷基铝种类及其它聚合条件而改变,但对烷基铝链转移速度常数影响显著。
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| 收稿时间： | 1983-03-05 |
KINETIC STUDY ON THE POLYMERIZATION OF BUTADIENE WITH LnCl_3-C_2H_5OH-AlR_3 CATALYSTS Ⅲ.The Kinetics of the Polymerization with NdCl_3-C_2H_5OH-AlR_3 Catalyst |
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| HU Jing-yu,PAN En-li,ZHOU Chang-yu.KINETIC STUDY ON THE POLYMERIZATION OF BUTADIENE WITH LnCl_3-C_2H_5OH-AlR_3 CATALYSTS Ⅲ.The Kinetics of the Polymerization with NdCl_3-C_2H_5OH-AlR_3 Catalyst[J].Acta Polymerica Sinica,1985,0(3):167-172. |
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| Authors: | HU Jing-yu PAN En-li ZHOU Chang-yu |
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| Institution: | Changchun Institute of Applied Chemistry; Academia Sinica; Changchun |
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| Abstract: | The number of active centers and reaction rate constants in the polymerization system of NdCl3-C2H5OH-AlR3-butadiene have been determined by means of tritiated alcohol quenching and kinetic methods. The experimental results show that the number of active centers in this polymerization system lies in the range of 0.5-2.8×10-2mol/ mol Nd with respect to two kinds of aluminium alkyls used. In the investigated range the propagation rate constant does not depend on the nature of AlR3 and polymerization conditions except polymerization temperature, while the rate constant of chain transfer is affected markedly by variations of polymerization conditions. |
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