| CRYSTALLIZATION KINETICS OF HOMOGENEOUS AND HETEROGENEOUS LLDPE |
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| 引用本文： | Hong-xiang Teng,Wen-hong Tang,Yi Shi,Xi-gao Jin State Key Laboratory of Polymer Physics and Chemistry Center for Molecular Science,Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Department of Chemistry Jilin University Changchun 130023,China. CRYSTALLIZATION KINETICS OF HOMOGENEOUS AND HETEROGENEOUS LLDPE[J]. 高分子科学, 2002, 0(4): 339-345 |
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| 作者姓名： | Hong-xiang Teng Wen-hong Tang Yi Shi Xi-gao Jin State Key Laboratory of Polymer Physics and Chemistry Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Department of Chemistry Jilin University Changchun 130023 China |
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| 作者单位： | Hong-xiang Teng;Wen-hong Tang;Yi Shi;Xi-gao Jin State Key Laboratory of Polymer Physics and Chemistry Center for Molecular Science，Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Department of Chemistry Jilin University Changchun 130023，China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (No. B040504), and the Science Foundation of State Key Laboratory of Polymer Physics and Chemistry, Chinese Academy of Sciences (00-B-15). |
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| 摘 要： | Based on thermal analysis, the isothermal and nonisothemal crystallization kinetics of Ziegler-Natta catalyzedlinear low density polyethylene (Z-N LLDPE) and metallocene catalyzed LLDPE (m-LLDPE) were studied. Treating theresults with the Avrami equation and the Ozawa equation, the crystallization constant lgk and the Avrami exponent n wereobtained. Some other crystallization parameters were also discussed. According to the different characteristics of the chainstructures of Z-N LLDPE and metallocene LLDPE, their crystallizaton behaviors were analyzed. It is indicated that thehomogeneity and heterogeneity of the two polymers act in different way during the crystallization process of polymers,including the nucleation and the growth of crystals under various conditions.
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| 收稿时间： | 2001-09-22 |
| 修稿时间： | 2001-12-26 |
CRYSTALLIZATION KINETICS OF HOMOGENEOUS AND HETEROGENEOUS LLDPE* |
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| Hong-xiang Teng,Wen-hong Tang,Yi Shi,Xi-gao Jin. CRYSTALLIZATION KINETICS OF HOMOGENEOUS AND HETEROGENEOUS LLDPE*[J]. Chinese Journal of Polymer Science, 2002, 0(4): 339-345 |
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| Authors: | Hong-xiang Teng Wen-hong Tang Yi Shi Xi-gao Jin |
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| Affiliation: | 1.State Key Laboratory of Polymer Physics and Chemistry Center for Molecular Science; Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China 2.Department of Chemistry Jilin University Changchun 130023; China |
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| Abstract: | Based on thermal analysis, the isothermal and nonisothemal crystallization kinetics of Ziegler-Natta catalyzedlinear low density polyethylene (Z-N LLDPE) and metallocene catalyzed LLDPE (m-LLDPE) were studied. Treating theresults with the Avrami equation and the Ozawa equation, the crystallization constant lgk and the Avrami exponent n wereobtained. Some other crystallization parameters were also discussed. According to the different characteristics of the chainstructures of Z-N LLDPE and metallocene LLDPE, their crystallizaton behaviors were analyzed. It is indicated that thehomogeneity and heterogeneity of the two polymers act in different way during the crystallization process of polymers,including the nucleation and the growth of crystals under various conditions. |
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| Keywords: | Crystallization kinetics Homogeneity Heterogeneity LLDPE |
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