Nonisothermal crystallization kinetics of polypropylene/polypropylene-g-polystyrene/polystyrene blends

Authors

  • Jinge Li,

    1. Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
    2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China
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  • Huayi Li,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
    • Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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  • Yucai Ke,

    1. Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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  • Qian Li,

    1. Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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  • Liaoyun Zhang,

    1. Graduate School, Chinese Academy of Sciences, Beijing 100049, China
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  • Youliang Hu

    1. Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Abstract

The nonisothermal crystallization kinetics of polypropylene (PP), PP/polystyrene (PS), and PP/PP-g-PS/PS blends were investigated with differential scanning calorimetry at different cooling rates. The Jeziorny modified Avrami equation, Ozawa method, and Mo method were used to describe the crystallization kinetics for all of the samples. The kinetics parameters, including the half-time of crystallization, the peak crystallization temperature, the Avrami exponent, the kinetic crystallization rate constant, the crystallization activation energy, and the F(T) and a parameters were determined. All of the results clearly indicate that the PP-g-PS copolymer accelerated the crystallization rate of the PP component in the PP/PP-g-PS/PS blends. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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