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Article Dans Une Revue Journal of Thermal Analysis and Calorimetry Année : 2015

Assessment of polyamide-6 crystallinity by DSC: Temperature dependence of the melting enthalpy

Résumé

This study addresses the question of the crystallinity determination of PA6 by means of DSC in the case when structural changes occur over a very large temperature domain during the heating scan. The temperature dependence of the melting enthalpy is then of crucial importance for determining the amount of crystalline phase involved in the various processes, and thus the initial crystallinity. Both DSC and WAXS measurements have been carried out of a PA6 sample submitted to various thermal treatments in order to identify the crystalline forms and the temperature-induced structural changes. The melting enthalpy dependence on temperature of PA6 was computed from heat capacity data of the solid and liquid borrowed from literature data tables. Similar computations were performed for PA66 which is likely to exhibit analogous structural changes during DSC analysis. © 2015 Akadémiai Kiadó, Budapest, Hungary.
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Dates et versions

hal-01804735 , version 1 (01-06-2018)

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Citer

C. Millot, L.-A. Fillot, O. Lame, P. Sotta, Roland Seguela. Assessment of polyamide-6 crystallinity by DSC: Temperature dependence of the melting enthalpy. Journal of Thermal Analysis and Calorimetry, 2015, 122 (1), pp.307-314. ⟨10.1007/s10973-015-4670-5⟩. ⟨hal-01804735⟩
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