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【答案】应助回帖
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sltmac(金币+1): 2012-02-25 09:48:22
sltmac(金币+50, 翻译EPI+1): 2012-03-02 09:40:37
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The topology of the polyethylene molecules is the decisive factor affecting the physical and application performance， controlingl of the topology of the polyethylene molecule Precisely is the core content of the preparation of cutting-edge features polyethylene.This project uses the chain walking catalyst by one-step method to synthesize the dendritic polyethylene, and controls its topology precisely. On the basis of the synthesis of alpha-diimine series chain walking catalyst,we can tudy the kinetics of ethylene polymerization process and Set up the chain walking catalyst catalytic polymerization of ethylene polymerization kinetics model . Through the adjustment of the catalyst structure and polymerization conditions , the Rins of ethylene monomer and the Rwalk of catalytic activity center can be adjusted ,thus the precisely control of polyethylene topology can be realized ,and it makes the relationship between structure and catalytic polyethylene topology structure-activity clear. This project will help to deepen understanding of polyethylene topology controljing,also it has the theoretical value and practical significance for the development of new functional polyolefin materials. 参考一下 |
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