Abstract
The non-isothermal crystallization kinetics of pure poly(ethylene terephthalate) (PET), PET/mica and PET/TiO2-coated mica composites were investigated by differential scanning calorimetry with different theoretical models, including the modified Avrami method, Ozawa method and Mo method. The activation energies of non-isothermal crystallization were calculated by Kissinger method and Flynn–Wall–Ozawa method. The results show that the modified Avrami equation and Ozawa theory fail to describe the non-isothermal crystallization behavior of all composites, while the Mo model fits the experiment data fair well. It is also found that the mica and TiO2-coated mica could act as heterogeneous nucleating agent and accelerate the crystallization rates of PET, and the effect of TiO2-coated mica is stronger than that of mica. The result is further reinforced by calculating the effective activation energy of the non-isothermal crystallization process for all composites using the Kissinger method and the Flynn–Wall–Ozawa method.
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Acknowledgments
This work was supported by the Science and Technology Plan Projects of Fujian Province (2012H6005), Key Project of Fujian Department Science and Technology (2013H0017), the Projects of Fujian Provincial Department of Education (JA10087) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (2011-1568).
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Lin, X., Zhang, H., Ke, M. et al. Non-isothermal crystallization kinetics of poly(ethylene terephthalate)/mica composites. Polym. Bull. 71, 2287–2301 (2014). https://doi.org/10.1007/s00289-014-1187-1
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DOI: https://doi.org/10.1007/s00289-014-1187-1