Abstract
In this work, the isothermal and nonisothermal crystallization kinetics of three novel biobased poly(ethylene succinate-co-ethylene sebacate) (PESSe) copolymers was systematically investigated with differential scanning calorimetry under different crystallization conditions from the amorphous state. For the isothermal cold crystallization kinetics study, the Avrami equation could well describe the crystallization process of PESSe at various crystallization temperatures. All three PESSe copolymers crystallized through the same crystallization mechanism; moreover, the overall isothermal cold crystallization rate of PESSe decreased with increasing ethylene sebacate (ESe) comonomer content. The nonisothermal cold crystallization kinetics of PESSe was also studied at different heating rates. With increasing ESe content or heating rate, the nonisothermal cold crystallization exotherm of PESSe copolymers shifted to high temperature range. Both the crystallization rate parameter and crystallization rate coefficient of PESSe copolymers decreased with increasing ESe content, indicating that PESSe copolymer with higher ESe content crystallized more slowly than that with lower ESe content. The Ozawa equation was used to analyze the nonisothermal cold crystallization kinetics of PESSe copolymers, which was found to fit the crystallization process very well.
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The authors thank the National Natural Science Foundation, China (51373020, 51573016 and 51521062) for the support of this research.
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Qiu, S., Su, Z. & Qiu, Z. Isothermal and nonisothermal crystallization kinetics of novel biobased poly(ethylene succinate-co-ethylene sebacate) copolymers from the amorphous state. J Therm Anal Calorim 129, 801–808 (2017). https://doi.org/10.1007/s10973-017-6234-3
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DOI: https://doi.org/10.1007/s10973-017-6234-3