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題 名 | The Apparent Rate Constant Model Approached for Diffusion-Controlled Radical Copolymerization=高轉化率自由基共聚合反應動力 |
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作 者 | Chen,C. Y.; Wu,R. J.; Kuo,J. F.; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 16:2 1985.04[民74.04] |
頁 次 | 頁171-178 |
分類號 | 460.02 |
關鍵詞 | 反應; 共聚合; 自由基; 高轉化率; 動力; |
語 文 | 英文(English) |
中文摘要 | 本文以三個視反應速率常數代替傳統共聚合反應動力的十個速率常數,將共聚合反應速率式簡化為單聚合反應速率式型態。此模式的特點是不必先給與聚合反應過程的假設,如化學或擴散控制。並且視反應速率常數可以簡單實驗方法決定。又可容易表示共聚合反應速率及評估反應過程。本文以甲基丙烯酸甲酯與苯乙烯自由基共聚合反應(60℃)為例說明,其結果與文獻報告者一致。 |
英文摘要 | In this article the kinetics of radical copolymerization is expressed in simple analogy with that of radical homopolymerization. Three empirical kinetic parameters (k⁴p for propagation, k□ for termination and ß for mode of termination), instead of 10 kinetic parameters of the traditional kinetic method, are used to describe radical copoly-merization. Radical copolymerization of methyl methacrylate with styrene reacted to about 60% monomer conversion at 60℃ was studied by this apparent rate constant model. The values of K⁴p, k□ and ß obtained depend on monomer conversion and monomer feed composition. It was observed that for the copolymerization rich in methyl methacrylate both propagation and termination reactions are influenced by the diffusion process which occurs at near zero monomer conversion while the mode of termination is not significantly affected by the diffusion process. |
本系統中英文摘要資訊取自各篇刊載內容。