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Non-isothermal crystallization kinetics of cork-polymer composites for injection molding

机译：注射成型用软木-聚合物复合材料的非等温结晶动力学

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The non-isothermal crystallization behavior of cork-polymer composites (CPC) based on polypropylene (PP) matrix was studied. Using differential scanning calorimetry (DSC), the crystallization behavior of CPC with 15 wt % cork powder at different cooling rates (5, 10, 15, and 20 degrees C/min) was studied. The effect of a coupling agent based on maleic anhydride was also analyzed. A composite (PPg) containing polypropylene grafted maleic anhydride (PPgMA) and PP was prepared for comparison purposes. Crystallization kinetic behavior was studied by Avrami, Ozawa, Liu, and Kissinger methods. The Ozawa method fails to describe the behavior of these composites. Results show that cork powder surface acts as a nucleating agent during non-isothermal crystallization, while the addition of PPgMA decreases the crystallization rate. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44124.
机译：研究了基于聚丙烯（PP）基体的软木-聚合物复合材料（CPC）的非等温结晶行为。使用差示扫描量热法（DSC），研究了15 wt％的软木粉在不同的冷却速率（5、10、15和20摄氏度/分钟）下CPC的结晶行为。还分析了基于马来酸酐的偶联剂的作用。为了比较，制备了包含聚丙烯接枝的马来酸酐（PPgMA）和PP的复合材料（PPg）。用Avrami，Ozawa，Liu和Kissinger方法研究了结晶动力学行为。 Ozawa方法无法描述这些复合材料的行为。结果表明，软木粉表面在非等温结晶过程中起成核剂的作用，而PPgMA的加入降低了结晶速率。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，44124。

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