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Using grafted poly(epsilon-caprolactone) for the compatibilization of thermoplastic starch-polylactic acid blends

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Using grafted poly(epsilon-caprolactone) for the compatibilization of thermoplastic starch-polylactic acid blends

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dc.contributor.author Collazo-Bigliardi, Sofía es_ES
dc.contributor.author Ortega-Toro, Rodrigo es_ES
dc.contributor.author Chiralt, A. es_ES
dc.date.accessioned 2021-01-27T04:32:24Z
dc.date.available 2021-01-27T04:32:24Z
dc.date.issued 2019-09 es_ES
dc.identifier.issn 1381-5148 es_ES
dc.identifier.uri http://hdl.handle.net/10251/159983
dc.description.abstract [EN] Thermoplastic starch (S) and polylactic acid (PLA) blend films were obtained by melt blending and compression moulding using grafted polycaprolactone with maleic anhydride and/or glycidyl methacrylate (PCLMG or PCLG) as compatibilizers. The effect of both the PLA ratio in the blend (20 and 40% with respect to starch) and the amount of both compatibilizers (2.5 and 5%) on the film properties was analysed. Compatibilized blends presented a better dispersion of the PLA in the continuous starch phase, but the use of PCLG provoked a phase inversion in the matrix when 40% of the starch was substituted by PLA. The compatibilized blend films exhibited higher values of elastic modulus than pure starch films, but were less extensible. The use of compatibilizers did not affect the film's water vapour permeability, which was reduced by up to 33 or 50% for 20 and 40% PLA, respectively, although inverted films with 40% PLA and 5% PCLG exhibited marked reduction (67%). Compatibilizers decreased the oxygen permeability of the films by about 50%, regardless of the ratio of PLA and the kind and amount of compatibilizer. Therefore, substituting 20% of the starch by PLA and incorporating 5% of PCLG would be a good strategy to obtain films useful for food packaging. es_ES
dc.description.sponsorship The authors thank the Ministerio de Economia y Competitividad (Spain) for the financial support provided through Project AGL2016-76699-R. The authors also wish to thank the Electron Microscopy Service of the UPV for their technical assistance. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation AEI/AGL2016-76699-R es_ES
dc.relation.ispartof Reactive and Functional Polymers es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Starch es_ES
dc.subject Polylactic acid es_ES
dc.subject Grafted polycaprolactone es_ES
dc.subject Compatibilizers es_ES
dc.subject Blend films es_ES
dc.subject.classification TECNOLOGIA DE ALIMENTOS es_ES
dc.title Using grafted poly(epsilon-caprolactone) for the compatibilization of thermoplastic starch-polylactic acid blends es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.reactfunctpolym.2019.05.013 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Tecnología de Alimentos - Departament de Tecnologia d'Aliments es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Ingeniería de Alimentos para el Desarrollo - Institut Universitari d'Enginyeria d'Aliments per al Desenvolupament es_ES
dc.description.bibliographicCitation Collazo-Bigliardi, S.; Ortega-Toro, R.; Chiralt, A. (2019). Using grafted poly(epsilon-caprolactone) for the compatibilization of thermoplastic starch-polylactic acid blends. Reactive and Functional Polymers. 142:25-35. https://doi.org/10.1016/j.reactfunctpolym.2019.05.013 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.reactfunctpolym.2019.05.013 es_ES
dc.description.upvformatpinicio 25 es_ES
dc.description.upvformatpfin 35 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 142 es_ES
dc.relation.pasarela S\409776 es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES
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