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Non-isothermal crystallization kinetic and compatibility of PTT/PP blends by using maleic anhydride grafted polypropylene as compatibilizer

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Abstract

The crystallization behaviors, non-isothermal crystallization kinetics, and the morphology of poly(trimethylene terephthalate)/Polypropylene (PTT/PP) blends using a maleic anhydride grafted polypropylene (PP-g-MAH) as a compatibilizer were investigated by differential scanning calorimeter (DSC) and scanning electron microscope (SEM), respectively. The results suggested that the blends exhibited different crystallization and melting behaviors due to different content of PP-g-MAH. All of the DSC curves of the blends exhibited two exothermic peaks and endothermic peaks. The commonly used Avrami equation modified by Jeziorny, Ozawa theory and the method developed by Mo were used, respectively, to fit the primary stage of non-isothermal crystallization process. The results suggested that the crystallization rate of PTT component was increased, whereas, that of PP component was retarded with the introduction of PP-g-MAH. The effective activation energy was calculated by differential iso-conversional method developed by Vyazovkin. The SEM result suggested that the introduction of PP-g-MAH greatly improved the compatibility between PTT and PP, and decreased the size of dispersed particles.

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Acknowledgment

The work is supported by the financial support from the Natural Science Foundation of Hebei Province (B2007000108), PR China.

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Authors and Affiliations

  1. Lab of Biochemical Analysis, Xinzhou Teacher’s University, Xinzhou, 034000, China

    Yingjin Wang

  2. College of Chemistry & Environmental Science, Hebei University, Baoding, 071002, China

    Mingtao Run

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  1. Yingjin Wang
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  2. Mingtao Run
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Correspondence to Yingjin Wang.

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Wang, Y., Run, M. Non-isothermal crystallization kinetic and compatibility of PTT/PP blends by using maleic anhydride grafted polypropylene as compatibilizer. J Polym Res 16, 725–737 (2009). https://doi.org/10.1007/s10965-009-9279-6

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  • DOI: https://doi.org/10.1007/s10965-009-9279-6

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