Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms

Square plates (nominal tickness: 3 mm, nominal width: 100 mm) of diferent rheolgically modified PLA/acrylonitrile-butadiene-styrene (ABS) blends were manufactured through injection molding process. During processing, the properties of the melt were stabilized and enhanced by the addition of a styren...

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Autores: Carrasco, Félix, Santana Pérez, Orlando O., Cailloux, Jonathan, Sánchez Soto, Miguel, Maspoch, Maria Lluïsa
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/14171
Acceso en línea:http://hdl.handle.net/10256/14171
Access Level:acceso embargado
Palabra clave:Polímers -- Deterioració
Polymers -- Deterioration
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spelling Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanismsCarrasco, FélixSantana Pérez, Orlando O.Cailloux, JonathanSánchez Soto, MiguelMaspoch, Maria LluïsaPolímers -- DeterioracióPolymers -- DeteriorationSquare plates (nominal tickness: 3 mm, nominal width: 100 mm) of diferent rheolgically modified PLA/acrylonitrile-butadiene-styrene (ABS) blends were manufactured through injection molding process. During processing, the properties of the melt were stabilized and enhanced by the addition of a styrene-acrylic multi-functional-epoxide oligomeric reactive agent (SAmfE). The general analytical equation has been used in order to evaluate the kinetic parameters of the thermal degradation of PLA-REX, ABS and its bioblend with a weight content of 70/30. Various empirical and theoretical solid-state mechanisms have been tested to elucidate the best kinetic model. In order to reach this goal, activation energy values were calculated by means of the Kissinger–Akahira–Sunose method. On the other hand, the standardized conversion functions have been constructed. Given that it is not always easy to visualize the best accordance between experimental and theoretical values of standardized conversion functions, a recently proposed index has been determined to quantitatively support our findings relative to the best reaction mechanisms. It has been demonstrated that the best mechanism for the thermal degradation of PLA-REX and ABS was the random scission of macromolecular chains. The bioblend thermal degradation occurred in two steps: the first step (α < 60%) took place through an R2 mechanism whereas the second step (α > 75%) did it according an F3 mechanism. Moreover, y(α) master plots have also been used in order to confirm that the selected reaction mechanisms were adequateThe Ministry of Economy and Competitiveness projects MAT2013-40730-P and MAT2016-80045-R (AEI/FEDER, UE) of the Spanish Government financially supported this workElsevierinfo2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/14171© Thermochimica Acta, 2017, vol. 654, p. 157-167Articles publicats (D-EQATA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2017.05.013info:eu-repo/semantics/altIdentifier/issn/0040-6031Tots els drets reservatsinfo:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/141712026-05-29T05:05:01Z
dc.title.none.fl_str_mv Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
title Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
spellingShingle Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
Carrasco, Félix
Polímers -- Deterioració
Polymers -- Deterioration
title_short Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
title_full Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
title_fullStr Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
title_full_unstemmed Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
title_sort Thermal degradation of poly(lactic acid) and acrylonitrile-butadiene-styrene bioblends: Elucidation of reaction mechanisms
dc.creator.none.fl_str_mv Carrasco, Félix
Santana Pérez, Orlando O.
Cailloux, Jonathan
Sánchez Soto, Miguel
Maspoch, Maria Lluïsa
author Carrasco, Félix
author_facet Carrasco, Félix
Santana Pérez, Orlando O.
Cailloux, Jonathan
Sánchez Soto, Miguel
Maspoch, Maria Lluïsa
author_role author
author2 Santana Pérez, Orlando O.
Cailloux, Jonathan
Sánchez Soto, Miguel
Maspoch, Maria Lluïsa
author2_role author
author
author
author
dc.subject.none.fl_str_mv Polímers -- Deterioració
Polymers -- Deterioration
topic Polímers -- Deterioració
Polymers -- Deterioration
description Square plates (nominal tickness: 3 mm, nominal width: 100 mm) of diferent rheolgically modified PLA/acrylonitrile-butadiene-styrene (ABS) blends were manufactured through injection molding process. During processing, the properties of the melt were stabilized and enhanced by the addition of a styrene-acrylic multi-functional-epoxide oligomeric reactive agent (SAmfE). The general analytical equation has been used in order to evaluate the kinetic parameters of the thermal degradation of PLA-REX, ABS and its bioblend with a weight content of 70/30. Various empirical and theoretical solid-state mechanisms have been tested to elucidate the best kinetic model. In order to reach this goal, activation energy values were calculated by means of the Kissinger–Akahira–Sunose method. On the other hand, the standardized conversion functions have been constructed. Given that it is not always easy to visualize the best accordance between experimental and theoretical values of standardized conversion functions, a recently proposed index has been determined to quantitatively support our findings relative to the best reaction mechanisms. It has been demonstrated that the best mechanism for the thermal degradation of PLA-REX and ABS was the random scission of macromolecular chains. The bioblend thermal degradation occurred in two steps: the first step (α < 60%) took place through an R2 mechanism whereas the second step (α > 75%) did it according an F3 mechanism. Moreover, y(α) master plots have also been used in order to confirm that the selected reaction mechanisms were adequate
publishDate 2017
dc.date.none.fl_str_mv 2017
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/14171
url http://hdl.handle.net/10256/14171
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2017.05.013
info:eu-repo/semantics/altIdentifier/issn/0040-6031
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv © Thermochimica Acta, 2017, vol. 654, p. 157-167
Articles publicats (D-EQATA)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
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