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Thermal analysis applied to the characterization of degradation in soil of polylactide: II. On the thermal stability and thermal decomposition kinetics

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Thermal analysis applied to the characterization of degradation in soil of polylactide: II. On the thermal stability and thermal decomposition kinetics

dc.contributor.author	Badia Valiente, José David
dc.contributor.author	Santonja-Blasco, L.
dc.contributor.author	Moriana, Rosana
dc.contributor.author	Ribes Greus, A.
dc.date.accessioned	2020-12-14T11:59:14Z
dc.date.available	2020-12-14T11:59:14Z
dc.date.issued	2010
dc.identifier.citation	Badia Valiente, José David Santonja-Blasco, L. Moriana, Rosana Ribes Greus, A. 2010 Thermal analysis applied to the characterization of degradation in soil of polylactide: II. On the thermal stability and thermal decomposition kinetics Polymer Degradation and Stability 95 11 2192 2199
dc.identifier.uri	https://hdl.handle.net/10550/76663
dc.description.abstract	The disposal stage of polylactide (PLA) was assessed by burying it in active soil following an international standard. Degradation in soil promotes physical and chemical changes in the polylactide properties. The characterization of the extent of degradation underwent by PLA was carried out by using Thermal Analysis techniques. In this paper, studies on the thermal stability and the thermal decomposition kinetics were performed in order to assess the degradation process of a commercial PLA submitted to an accelerated soil burial test by means of multi-linear-non-isothermal thermogravimetric analyses. Results have been correlated to changes in molecular weight, showing the same evolution as that described by the parameters of thermal stability temperatures and apparent activation energies. The decomposition reactions can be described by two competitive different mechanisms: Nucleation model (A2) and Reaction Contracting Volume model (R3). The changes in the kinetic parameters and kinetic models are in agreement with the calorimetric and dynamic-mechanical-thermal results, presented in the Part I of the study.
dc.language.iso	eng
dc.relation.ispartof	Polymer Degradation and Stability, 2010, vol. 95, num. 11, p. 2192-2199
dc.subject	Ciència dels materials
dc.subject	Termoplàstics
dc.title	Thermal analysis applied to the characterization of degradation in soil of polylactide: II. On the thermal stability and thermal decomposition kinetics
dc.type	journal article	es_ES
dc.date.updated	2020-12-14T11:59:15Z
dc.identifier.doi	10.1016/j.polymdegradstab.2010.06.002
dc.identifier.idgrec	134909
dc.rights.accessRights	open access	es_ES