| Is the polydispersity exponent of the hyperbranched polymers the 3/2 or 5/2？ |
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| 作者姓名： | BA Xinwu LIU Ying WANG Sujuan WANG Haijun |
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| 作者单位： | [1]College of Chemistry and Environment Science, Hebei University, Baoding 071002, China [2]Department of Chemistry, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China |
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| 基金项目： | Acknowledgements This work was supported by the National Natural Science Foundation of China （Grant Nos. 20574016 and 20303006）, and the Natural Science Foundation of Hebei Province （Grant Nos. 201072 and B2004000093）. |
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| 摘 要： | Dendrimers and hyperbranched polymers have re- ceived much attention in recent decade due to their novel physical and chemical properties, such as multi- ple end groups, high solubility, and reduced viscosities relative to their linear counterparts, and h…
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| 关 键 词： | 超分支聚合体 多分散指数 聚合过程 渐近形式 |
| 收稿时间： | 2005-12-04 |
| 修稿时间： | 2005-12-042006-03-28 |
Is the polydispersity exponent of the hyperbranched polymers the 3/2 or 5/2? |
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| BA Xinwu LIU Ying WANG Sujuan WANG Haijun.Is the polydispersity exponent of the hyperbranched polymers the 3/2 or 5/2?[J].Chinese Science Bulletin,2006,51(12):1526-1528. |
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| Authors: | Xinwu Ba Ying Liu Sujuan Wang Haijun Wang |
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| Institution: | (1) College of Chemistry and Environment Science, Hebei University, Baoding, 071002, China;(2) Department of Chemistry, Hebei Normal University of Science and Technology, Qinhuangdao, 066600, China |
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| Abstract: | The number of the hyperbranched polymers in the system is investigated for the polymerization process to give the asymptotic form of the concentration of the n-mer. The polydispersity exponent is calculated, which coincides with that of the classical result. Finally, the asymptotic forms of the number, the weight and the z-average degrees of the polymerization were evaluated analytically to obtain polydispersity index, which is close to 1 as the reaction is quantitatively completed. |
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| Keywords: | hyperbranched polymers polydispersity exponent polydispersity index |
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