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Kinetic study of thermal degradation of chitosan as a function of deacetylation degree

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Kinetic study of thermal degradation of chitosan as a function of deacetylation degree

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dc.contributor.author Gamiz-Gonzalez, Mª Amparo es_ES
dc.contributor.author Correia, D.M. es_ES
dc.contributor.author Lanceros-Mendez, S. es_ES
dc.contributor.author Sencadas, V. es_ES
dc.contributor.author Gómez Ribelles, José Luís es_ES
dc.contributor.author Vidaurre, Ana es_ES
dc.date.accessioned 2020-10-24T03:30:49Z
dc.date.available 2020-10-24T03:30:49Z
dc.date.issued 2017-07-01 es_ES
dc.identifier.issn 0144-8617 es_ES
dc.identifier.uri http://hdl.handle.net/10251/153116
dc.description.abstract [EN] Thermal degradation of chitosan with varying deacetylation degree (DD) ranging between 50 and 85% was analyzed by dynamic thermogravimetric analysis at different heating rates. The present study focused on the temperature range between 500 and 800 K, above water evaporation. Thermal degradation showed a main degradation stage in this temperature interval with a second stage that appeared in the weight derivative curves as a shoulder in the high temperature side of the main peak with increasing intensity as the DD decreased. The Kissinger and isoconversional Ozawa-Flynn-Wall models were employed to evaluate the Ea of both thermal degradation processes. Different kinetic models were tested to computer simulate the thermogravimetric traces calculating the model parameters with a non-linear least squares fitting routine. The Sestack-Berggren model allowed reproducing accurately the overlapping of the two degradation mechanisms and calculating the mass fraction lost in each of them revealing the coupling between the two degradation mechanisms. es_ES
dc.description.sponsorship Thermal degradation of chitosan with varying deacetylation degree (DD) ranging between 50 and 85% was analyzed by dynamic thermogravimetric analysis at different heating rates. The present study focused on the temperature range between 500 and 800 K, above water evaporation. Thermal degradation showed a main degradation stage in this temperature interval with a second stage that appeared in the weight derivative curves as a shoulder in the high temperature side of the main peak with increasing intensity as the DD decreased. The Kissinger and isoconversional Ozawa-Flynn-Wall models were employed to evaluate the Ea of both thermal degradation processes. Different kinetic models were tested to computer simulate the thermogravimetric traces calculating the model parameters with a non-linear least squares fitting routine. The Sestack-Berggren model allowed reproducing accurately the overlapping of the two degradation mechanisms and calculating the mass fraction lost in each of them revealing the coupling between the two degradation mechanisms. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Carbohydrate Polymers es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Chitosan es_ES
dc.subject Deacetylation degree es_ES
dc.subject Thermal degradation es_ES
dc.subject Thermogravimetric analysis es_ES
dc.subject Kinetic models es_ES
dc.subject Activation energy es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.subject.classification TERMODINAMICA APLICADA (UPV) es_ES
dc.title Kinetic study of thermal degradation of chitosan as a function of deacetylation degree es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.carbpol.2017.03.020 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F121526%2F2016/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/FCT/5876/147414/PT/Physics Center of Minho and Porto Universities/
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//BES-2011-044740/ES/BES-2011-044740/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//MAT2013-46467-C4-1-R/ES/ESTIMULACION MECANICA LOCAL DE CELULAS MESENQUIMALES DE CARA A SU DIFERENCIACION OSTEOGENICA Y CONDROGENICA EN MEDICINA REGENERATIVA/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//MAT2016-76039-C4-1-R/ES/BIOMATERIALES PIEZOELECTRICOS PARA LA DIFERENCIACION CELULAR EN INTERFASES CELULA-MATERIAL ELECTRICAMENTE ACTIVAS/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Termodinámica Aplicada - Departament de Termodinàmica Aplicada es_ES
dc.description.bibliographicCitation Gamiz-Gonzalez, MA.; Correia, D.; Lanceros-Mendez, S.; Sencadas, V.; Gómez Ribelles, JL.; Vidaurre, A. (2017). Kinetic study of thermal degradation of chitosan as a function of deacetylation degree. Carbohydrate Polymers. 167:52-58. https://doi.org/10.1016/j.carbpol.2017.03.020 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.carbpol.2017.03.020 es_ES
dc.description.upvformatpinicio 52 es_ES
dc.description.upvformatpfin 58 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 167 es_ES
dc.identifier.pmid 28433177 es_ES
dc.relation.pasarela S\347773 es_ES
dc.contributor.funder Instituto de Salud Carlos III es_ES
dc.contributor.funder Gobierno Vasco/Eusko Jaurlaritza es_ES
dc.contributor.funder European Regional Development Fund es_ES
dc.contributor.funder Ministerio de Economía, Industria y Competitividad es_ES
dc.contributor.funder Fundação para a Ciência e a Tecnologia, Portugal es_ES
dc.contributor.funder Ministerio de Ciencia e Innovación es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES


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