| Nd（OPr~i）_2Cl－AlEt_3均相二元催化剂异戊二烯聚合动力学Ⅰ．一般动力学研究 |
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| 引用本文： | 蔡小平,龚志,王佛松,朱行浩,李秀华. Nd（OPr~i）_2Cl－AlEt_3均相二元催化剂异戊二烯聚合动力学Ⅰ．一般动力学研究[J]. 高分子学报, 1995, 0(5) |
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| 作者姓名： | 蔡小平 龚志 王佛松 朱行浩 李秀华 |
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| 作者单位： | 中国科学院长春应用化学研究所，吉化公司研究院 |
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| 摘 要： | 用膨胀计研究了Ｎｄ（ＯＰｒｉ）２Ｃｌ－ＡｌＥｔ３均相稀土催化剂异戊二烯聚合动力学．在实验条件下，本体系显示稳态聚合特征；聚合速度对单体浓度和催化剂浓度均为一级关系，即聚合速度方程为Ｒｐ＝Ｋｐ［Ｎｄ］［Ｍ］；本体系总的活化能Ｅａ为５７．４ｋＪ／ｍｏｌ．
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| 关 键 词： | 动力学，聚异戊二烯，均相催化剂，稀土催化剂 |
KINETICS OF POLYMERIZATION OF ISOPRENE WITH Nd(OPr￣i)_2Cl-AlEt_3 SOLUBLE CATALYST SYSTEM Ⅰ.A GENERAL KINETIC INVESTIGATION |
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| CAI Xiaoping,GONG Zhi,WANG Fosong. KINETICS OF POLYMERIZATION OF ISOPRENE WITH Nd(OPr￣i)_2Cl-AlEt_3 SOLUBLE CATALYST SYSTEM Ⅰ.A GENERAL KINETIC INVESTIGATION[J]. Acta Polymerica Sinica, 1995, 0(5) |
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| Authors: | CAI Xiaoping GONG Zhi WANG Fosong |
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| Abstract: | he kinetics of the polymerization of isoprene with a soluble rare earth catalyst system Nd(OPri)2Cl-AlEt3 has been examined in a specially designed dilatometer.The polymerization process was characterized by a steady-state reaction within the experimental range, and polymerization rate is first order in both the concentration of neodymium compound and monomer,that is,Rp =-d[M]/dt=Kp[Nd][M].The apparent activation energy of isoprene polmerization has been found to be 57.4KJ/mol in heptane. |
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| Keywords: | Kinetics Polyisoprene Homogeneous catalyst Rare earth catalyst |
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