Modelling the non-isothermal crystallization of polymers: Application to poly(ethylene 2,5-furandicarboxylate)
| Autor: | Ed de Jong, Jesper Gabriël Van Berkel, Nathanael Guigo, Nicolas Sbirrazzuoli |
|---|---|
| Přispěvatelé: | Institut de Chimie de Nice (ICN), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Avantium Chemicals B.V. |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Crystallization of polymers Isothermal crystallization Thermodynamics 02 engineering and technology Polymer Activation energy 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention Crystallization kinetics chemistry law [CHIM]Chemical Sciences Physical and Theoretical Chemistry Crystallization 0210 nano-technology Instrumentation Poly ethylene |
| Zdroj: | Thermochimica Acta Thermochimica Acta, Elsevier, 2017, ⟨10.1016/j.tca.2017.02.008⟩ |
| ISSN: | 0040-6031 |
| DOI: | 10.1016/j.tca.2017.02.008⟩ |
| Popis: | International audience; Several equations have been compared for the modelling of semi-cristalline polymer crystallization on cooling from the melt and on heating from the glass. The temperature dependence was described with the Hoffman–Lauritzen (HL) equation, where U* and Kg were first determined by fitting the activation energy (Eα) dependency with temperature computed with an advanced isoconversional method (AIC) from DSC data. Several models were used to describe the extent of crystallization dependence, such as Sestak-Berggren and Avrami models. Simulations using Ozawa and AIC methods were performed for comparisons. It was shown that the model-free approach is able to take into account additional crystallization phenomena that are not considered in the classical HL or Avrami equations. Then, a new equation has been proposed to simulate additional phenomena occurring at the end of crystallization on heating from the glass, which are not described by the Hoffman–Lauritzen theory. The experimental finding that application of an isoconversional method to crystallization data following a HL mechanism, should lead to positive decreasing values for crystallization from the glass and to negative increasing values for crystallization from the melt was confirmed by simulations. |
| Databáze: | OpenAIRE |
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