Assessmento of UV exposure and aerobic biodegradation of poly(butylene adipate-co-terephthalate)/starch blend films coated with radiation-curable print links containing degradation-promoting additives

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dc.contributor.authorBARDI, MARCELO A.G.
dc.contributor.authorMUNHOZ, MARA M.L.
dc.contributor.authorAURAS, RAFAEL A.
dc.contributor.authorMACHADO, LUCI D.B.
dc.coverageInternacionalpt_BR
dc.date.accessioned2014-12-23T10:53:03Z
dc.date.available2014-12-23T10:53:03Z
dc.date.issued2014pt_BR
dc.description.abstractBiodegradable poly(butylene adipate-co-terephthalate) (PBAT) and thermoplastic starch (TPS) blend films were printed with white, yellow, red, blue, and black inks based on epoxy acrylate resin. Clear PBAT/TPS films were used as the control. Ink formulations were also modified with (1% w/w) and without the degradation-promoting additives cobalt stearate (CoSt) or cerium stearate (CeSt). Printed PBAT/TPS films were cured under ultravioletlight emitted by a medium-pressure mercury lamp at 10.3 kWm−2, and then further aged in a accelerated weathering chamber at a total irradiance of 0.89Wm−2 continuously for 250 h at 50 ± 3 ◦C. Subsequently, samples were exposed to an aerobic composting biodegradation process at 58 ◦C and 55% relative humidity for 60 d. Color (L*, a* and b*), gloss and hardness indexes, as well as FTIR spectra, were obtained. Thermal properties and molecular structure were monitored before and after UV exposure and biodegradation tests. The addition of CoSt affected the color, gloss and hardness of the samples exposed to UV aging. The degradation ofthe PBAT/TPS + CoSt films depended on the nature of the ink pigment and on their capacity to absorb UV photons. UV exposure of PBAT/TPCS samples resulted in a larger reduction of weight average molecular weight (M¯ w) and the evolution of CO2. The incorporation of the degradation-promoting additives increased the sensitivity of the films to UV degradation, and CoSt had a large impact in the final M¯ w of the samples.
dc.format.extent326-334pt_BR
dc.identifier.citationBARDI, MARCELO A.G.; MUNHOZ, MARA M.L.; AURAS, RAFAEL A.; MACHADO, LUCI D.B. Assessmento of UV exposure and aerobic biodegradation of poly(butylene adipate-co-terephthalate)/starch blend films coated with radiation-curable print links containing degradation-promoting additives. <b>Industrial Crops and Products</b>, v. 60, p. 326-334, 2014. DOI: <a href="https://dx.doi.org/10.1016/j.indcrop.2014.06.042">10.1016/j.indcrop.2014.06.042</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/23182.
dc.identifier.doi10.1016/j.indcrop.2014.06.042
dc.identifier.issn0926-6690pt_BR
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/23182
dc.identifier.vol60pt_BR
dc.relation.ispartofIndustrial Crops and Productspt_BR
dc.rightsopenAccesspt_BR
dc.subjectpolymers
dc.subjectthermoplastics
dc.subjectstarch
dc.subjectbiodegradation
dc.subjectelectron beams
dc.subjectinks
dc.subjectpigments
dc.subjectadditives
dc.subjectthermoplastics
dc.subjectstarch
dc.subjectbiodegradation
dc.subjectultraviolet radiation
dc.subjectelectron beams
dc.subjectinks
dc.subjectpigments
dc.subjectadditives
dc.subjectthermodynamic properties
dc.subjectmolecular structure
dc.titleAssessmento of UV exposure and aerobic biodegradation of poly(butylene adipate-co-terephthalate)/starch blend films coated with radiation-curable print links containing degradation-promoting additivespt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorLUCI DIVA BROCARDO MACHADO
ipen.autorMARA DE MELLO LEITE MUNHOZ
ipen.autorMARCELO AUGUSTO GONÇALVES BARDI
ipen.codigoautor963
ipen.codigoautor8585
ipen.codigoautor8502
ipen.contributor.ipenauthorLUCI DIVA BROCARDO MACHADO
ipen.contributor.ipenauthorMARA DE MELLO LEITE MUNHOZ
ipen.contributor.ipenauthorMARCELO AUGUSTO GONÇALVES BARDI
ipen.date.recebimento14-12pt_BR
ipen.identifier.fi2.837pt_BR
ipen.identifier.ipendoc20232pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.identifier.ods12
ipen.range.fi1.500 - 2.999
ipen.type.genreArtigo
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relation.isAuthorOfPublicationa7bd7814-b0e5-4da5-b942-090deb5ff28b
relation.isAuthorOfPublication9d7d8743-d73f-4bed-8775-1fe07c27e0a1
relation.isAuthorOfPublication.latestForDiscovery9d7d8743-d73f-4bed-8775-1fe07c27e0a1
sigepi.autor.atividadeBARDI, MARCELO A.G.:8502:220:S
sigepi.autor.atividadeMUNHOZ, MARA M.L.:8585:220:N
sigepi.autor.atividadeMACHADO, LUCI D.B.:963:220:N
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