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| STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY POLYPROPYLENE-BASED VANADYL POLYIMIDODIACETATE——THIOUREA REDOX SYSTEM | |
| 引用本文： | 杨超雄,吴锦远,梁振明,冯灼权. STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY POLYPROPYLENE-BASED VANADYL POLYIMIDODIACETATE——THIOUREA REDOX SYSTEM[J]. 高分子科学, 1989, 0(3): 245-251 |
| 作者姓名： | 杨超雄 吴锦远 梁振明 冯灼权 |
| 作者单位： | Guangzhou Institute of Chemistry，Academia Sinica，Guangzhou，Guangzhou Institute of Chemistry，Academia Sinica，Guangzhou，Guangzhou Institute of Chemistry，Academia Sinica，Guangzhou，Guangzhou Institute of Chemistry，Academia Sinica，Guangzhou |
| 摘 要： | The present paper deals with the kinetics of polymerization of acrylonitrile (AN) initialed by the redox system of polypropylene-based vanadyi polyimidodiacetate (PV)-thiourea (TU)in aqueous sulfuric acid in the temperature range from 25 to 40℃. The polymerization rate was measured by varying the concentrations of monomer, vanadyl polyimidodiacetate, thiourea and sulfuric acid. The overall rate of polymerization was summarized asRp=2.2×10~5e~(-6.560/RT) [AN]~(1.0)[PV]~(0.50)[TU]~(1.5)[H_2SO_4]~(2.0)The molecular weight of polyacrylonitrile based on the experimental data was:(?)=k 1/T [pv]~(0.50)[TU]~(1.5)[H_2SO_4]~(2.0)These results indicated that the chain radicals are terminated by combination and/or disproportionation rather than chain transfer. The cooperation effect of carboxylic groups and the macromolecular field effect of polymer supporter are the characters of vanadyl polyimidodiacetate such as the case reported in early paper. |
| 收稿时间： | 1988-06-22 |
STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY POLYPROPYLENE-BASED VANADYL POLYIMIDODIACETATE——THIOUREA REDOX SYSTEM |
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| Yang Chaoxiong,Wu Jinyun,Liang Zhenming,Feng Zhouquan. STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY POLYPROPYLENE-BASED VANADYL POLYIMIDODIACETATE——THIOUREA REDOX SYSTEM[J]. Chinese Journal of Polymer Science, 1989, 0(3): 245-251 | |
| Authors: | Yang Chaoxiong Wu Jinyun Liang Zhenming Feng Zhouquan |
| Affiliation: | Guangzhou Institute of Chemistry; Academia Sinica; Guangzhou |
| Abstract: | The present paper deals with the kinetics of polymerization of acrylonitrile (AN) initialed by the redox system of polypropylene-based vanadyi polyimidodiacetate (PV)-thiourea (TU)in aqueous sulfuric acid in the temperature range from 25 to 40℃. The polymerization rate was measured by varying the concentrations of monomer, vanadyl polyimidodiacetate, thiourea and sulfuric acid. The overall rate of polymerization was summarized as Rp=2.2×105e-6.560/RT [AN]1.0[PV]0.50[TU]1.5[H2SO4]2.0 The molecular weight of polyacrylonitrile based on the experimental data was:Mn=k·1/T·[AN]/[PV]0.50[TU]1.5[H2SO4]2.0 These results indicated that the chain radicals are terminated by combination and/or disproportionation rather than chain transfer.The cooperation effect of carboxylic groups and the macromolecular field effect of polymer supporter are the characters of vanadyl polyimidiacetate such as the case reported in early paper[1]. |
| Keywords: | Polymer supported catalyst Vanadyl polyimidodiacetate Acrylonitrile polymerization Kinetics |
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