Study of flexible films prepared from PBAT/PLA blends reinforced with bio-CaCO3

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dc.contributor.authorCARDOSO, ELIZABETH C.L.
dc.contributor.authorBUENO, NELSON R.
dc.contributor.authorOLIVEIRA, RENE R.
dc.contributor.authorMOURA, ESPERIDIANA A.B.
dc.coverageInternacionalpt_BR
dc.creator.eventoBRAZILIAN CONFERENCE ON COMPOSITE MATERIALS, 3rdpt_BR
dc.date.accessioned2016-10-10T18:35:06Z
dc.date.available2016-10-10T18:35:06Z
dc.date.eventoAugust 28-31, 2016pt_BR
dc.description.abstractPlastics global annual production exceeds 250 million tons and more than 40 % of the total plastic production is used as packaging materials. The most widely used materials include polyethylene (PE) and polypropylene (PP), among others. However, petrochemical-based conventional packaging materials are non-biodegradable and cause serious environmental problems. Poly (lactic acid) (PLA), a linear aliphatic polymer is known as a biodegradable thermoplastic polymer with widely potential applications. However, its high brittleness and low toughness limits its application; blending PLA with PBAT (Poly (butylene adipate-co-terepthalate), an aliphatic-aromatic copolyester, was the solution found due to its high toughness and biodegradability. Nevertheless, differences between PLA and PBAT solubility parameter values lead to the formation of immiscible blends as well as reduction in their mechanical performance. CaCO3 from avian eggshells, when added in PLA / PBAT composites imparts optimization of mechanicals properties due to its characteristic as reinforcing filler. This study aims to evaluate the effects of PLA addition in PBAT/PLA blends especially concerned to mechanical and thermal properties of PLA / PBAT / CaCO3 flexible films. Composites were prepared by melt processing, using a twin-screw extruder (L/D - 25). Before blown film processing, the composites were cooled down for a better dimensional stability, pelletized and dried at 60 ± 2 ºC for 24 h. The mechanical and thermal properties of obtained films were investigated by tensile tests, DSC and TG / DTG. In addition, the morphology of blends and composites were also evaluated by XRD and SEM analyses. The results showed important increase in crystallinity and tensile strength at break of flexible films without severe loss in elongation percentage, due to CaCO3 additional in PBAT / PLA blend with higher PLA contents.pt_BR
dc.event.siglaBCCMpt_BR
dc.identifier.citationCARDOSO, ELIZABETH C.L.; BUENO, NELSON R.; OLIVEIRA, RENE R.; MOURA, ESPERIDIANA A.B. Study of flexible films prepared from PBAT/PLA blends reinforced with bio-CaCO3. In: BRAZILIAN CONFERENCE ON COMPOSITE MATERIALS, 3rd, August 28-31, 2016, Gramado, RS. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/26743.
dc.identifier.orcidhttps://orcid.org/0000-0003-3546-1643
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/26743
dc.local.eventoGramado, RSpt_BR
dc.rightsopenAccesspt_BR
dc.subjectplastics
dc.subjectfilms
dc.subjectpackaging
dc.subjectlactic acid
dc.subjectpolymers
dc.subjectcalcium carbonates
dc.titleStudy of flexible films prepared from PBAT/PLA blends reinforced with bio-CaCO3pt_BR
dc.typeTexto completo de eventopt_BR
dspace.entity.typePublication
ipen.autorESPERIDIANA AUGUSTA BARRETOS DE MOURA
ipen.autorRENE RAMOS DE OLIVEIRA
ipen.autorNELSON RODRIGUES BUENO
ipen.autorELISABETH CARVALHO L. CARDOSO
ipen.codigoautor1045
ipen.codigoautor942
ipen.codigoautor396
ipen.codigoautor2116
ipen.contributor.ipenauthorESPERIDIANA AUGUSTA BARRETOS DE MOURA
ipen.contributor.ipenauthorRENE RAMOS DE OLIVEIRA
ipen.contributor.ipenauthorNELSON RODRIGUES BUENO
ipen.contributor.ipenauthorELISABETH CARVALHO L. CARDOSO
ipen.date.recebimento16-10pt_BR
ipen.event.datapadronizada2016pt_BR
ipen.identifier.ipendoc22629pt_BR
ipen.notas.internasProceedingspt_BR
ipen.type.genreArtigo
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relation.isAuthorOfPublicationb56dc8d5-99b9-470b-a66d-098efd4f7939
relation.isAuthorOfPublicationf1b2ad7e-6a0c-4039-a29a-19b0533ee38d
relation.isAuthorOfPublication24a0e7e2-b94f-451d-aeb4-524633419eb9
relation.isAuthorOfPublication.latestForDiscovery24a0e7e2-b94f-451d-aeb4-524633419eb9
sigepi.autor.atividadeCARDOSO, ELIZABETH C.L.:2116:740:Spt_BR
sigepi.autor.atividadeBUENO, NELSON R.:396:740:Npt_BR
sigepi.autor.atividadeOLIVEIRA, RENE R.:942:730:Npt_BR
sigepi.autor.atividadeMOURA, ESPERIDIANA A.B.:1045:740:Npt_BR
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