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首页> 外文期刊>Crystal growth & design >A Generalized Avrami Equation for Crystallization Kinetics of Polymers with Concomitant Double Crystallization Processes
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A Generalized Avrami Equation for Crystallization Kinetics of Polymers with Concomitant Double Crystallization Processes

机译：具有伴随双晶方法的聚合物结晶动力学的广义AVRAMI方程

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摘要

Concomitant double crystallization processes widely occur in semicrystalline polymers and their blends because of structural and morphological heterogeneity. In this work, a generalized kinetics model was established for the isothermal crystallization in the presence of concomitant double crystallization processes, based on the Avrami theory for single crystallization process. The different situations of the double crystallization processes, including independent, competitive, and composite types, are considered in the model by introducing the concept of "domains". This model was applied to crystallization of triblock terpolymer with morphological defects, polymorphic poly(vinylidene fluoride)/nanoclay nanocomposite, isotactic polypropylene with a broad isotacticity distribution, and poly(ethylene terephthalate) ultrathin film. It is found that, besides the information on crystallization kinetics, other information such as morphological defect, nucleation density, cocrystallization, and structure of ultrathin film can also be provided by this model.
机译：由于结构和形态的异质性，伴随的双晶过程广泛地发生在半结晶聚合物和它们的共混物中。在这项工作中，基于用于单结晶过程的AVRAMI理论，在存在伴随的双晶过程存在下为等温结晶的广义动力学模型。通过引入“域”的概念，在模型中考虑了双晶过程的不同情况，包括独立，竞争和复合类型。将该模型应用于三嵌段三元共聚物的结晶，具有形态缺陷，多晶型聚（偏二氟乙烯）/纳米粘土纳米复合材料，具有宽同时性分布的全同立构聚丙烯，以及聚（对苯二甲酸乙二醇酯）超薄膜。结果发现，除了关于结晶动力学的信息，还可以通过该模型提供其他信息，例如形态缺损，成核密度，共晶，结晶和结构的结构。

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  • 来源
    《Crystal growth & design》 |2017年第11期|共10页
  • 作者

    Wang Rui-Yang; Zou Shu-Fen; Jiang Bai-Yu; Fan Bin; Hou Meng-Fei; Zuo Biao; Wang Xin-Ping; Xu Jun-Ting; Fan Zhi-Qiang;

  • 作者单位

    Zhejiang Univ MOE Key Lab Macromol Synth &

    Functionalizat Dept Polymer Sci &

    Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth &

    Functionalizat Dept Polymer Sci &

    Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth &

    Functionalizat Dept Polymer Sci &

    Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth &

    Functionalizat Dept Polymer Sci &

    Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth &

    Functionalizat Dept Polymer Sci &

    Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Dept Chem Educ Minist Key Lab Adv Text Mat &

    Mfg Technol Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Dept Chem Educ Minist Key Lab Adv Text Mat &

    Mfg Technol Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth &

    Functionalizat Dept Polymer Sci &

    Engn Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth &

    Functionalizat Dept Polymer Sci &

    Engn Hangzhou 310027 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
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