Crystallization kinetics of poly(vinylidene fluoride)/MMT,SiO2, CaCO3, or PTFE nanocomposite by differential scanning calorimeter |
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| Authors: | Wenzhong Ma Xiaolin Wang Jun Zhang |
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| Affiliation: | (1) State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China;(2) College of Materials Science and Engineering, Nanjing University of Technology, Nanjing, 210009, China; |
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| Abstract: | The nonisothermal crystallization kinetics of poly(vinylidene fluoride) (PVDF) in PVDF/MMT, SiO2, CaCO3, or PTFE composites was investigated through differential scanning calorimetry measurements. The enhanced nucleation of PVDF in its nanocomposites with four types of nanoparticle, and their impact on the crystallization kinetics and melting behaviors were discussed. The modified Avrami method and combined Ozawa–Avrami approaches successfully described the primary crystallization of PVDF in nanocomposite samples under the nonisothermal crystallization process. The activation energy was determined according to the Friedman method and it was quite fit with the results of the analysis according to the modified Avrami model and a combined Ozawa–Avrami model. |
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