Nonisothermal Crystallization Behavior of Polypropylene-C60 Nanocomposites |
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Authors: | Qiang Wu Shenyuan Fu Jin Han Pingan Song |
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Affiliation: | 1. College of Engineering , Zhejiang Agricultural and Forestry University , Hangzhou , China;2. Xiaoshan Entry-exit Inspection and Quarantine Bureau , Hangzhou , China |
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Abstract: | The nonisothermal crystallization behavior of polypropylene (PP) and PP-fullerene (C60) nanocomposites was studied by differential scanning calorimetry (DSC). The kinetic models based on the Jeziorny, Ozawa, and Mo methods were used to analyze the nonisothermal crystallization process. The onset crystallization temperature (Tc), half-time for the crystallization (t1/2), kinetic parameter (F(T)) by the Mo method and activation energy (ΔE) estimated by the Kissinger method showed that C60 accelerates the crystallization of PP, implying a nucleating role of C60. Furthermore, due to the reduced viscosity of PP by adding 5% C60, the parameters of crystallization kinetics for the PP-5%C60 nanocomposites changed remarkably relative to that of neat PP and when lower contents of C60 were added to PP. |
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Keywords: | crystallization kinetics differential scanning calorimetry (DSC) fullerene nonisothermal crystallization polypropylene rheology |
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