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dc.creatorOliveira, Natália Leite-
dc.creatorOliveira, Ana Carolina Salgado de-
dc.creatorSilva, Sergio Henrique-
dc.creatorRodrigues, Adrise Aparecida-
dc.creatorBorges, Soraia Vilela-
dc.creatorOliveira, Juliano Elvis de-
dc.creatorResende, Jaime Vilela de-
dc.date.accessioned2022-06-30T16:47:51Z-
dc.date.available2022-06-30T16:47:51Z-
dc.date.issued2022-05-15-
dc.identifier.citationOLIVEIRA, N. L. et al. Development and characterization of starch-based films added ora-pro-nobis mucilage and study of biodegradation and photodegradation. Journal of Applied Polymer Science, [S.l.], v. 139, n. 19, p. 1-15, May 2022. DOI: 10.1002/app.52108.pt_BR
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/10.1002/app.52108pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/50403-
dc.description.abstractOra-pro-nobis mucilage (MOPN) was incorporated into starch films to improve their mechanical, chemical, and retrogradation properties. Films were made in four MOPN content (0%, 10%, 20%, and 30%) by casting. Films with added MOPN presented antioxidant capacity varying from 3.9% to 23.3%. Chemical cross-links between starch and MOPN were observed in Fourier transform infrared spectroscopy (FTIR) spectrum, resulting in a reinforced network with the greater young modulus (0.02 Pa, control-film, to 2.20 Pa, 30%-MOPN), higher tensile strength (1.34 Pa, control-film, to 4.38 Pa, 30%-MOPN), and reduction in elongation (250.32%, control-film, to 6.55%, 30%-MOPN). Water vapor permeability did not differ statistically between films. In assays photodegradation, higher MOPN content exhibited less shrinkage of films over time and more loss mass in films during 28 days. FTIR spectrum showed that the films increased crystalline regions during storage, which resulted in stronger aggregation between aligned helices. In addition, water molecules were released which allowed a better alignment of the starch chains. Starch-based films added MOPN can alternatively be used as active biodegradable packaging since it is able to form cohesive, flexible films and with antioxidant action. Furthermore, MOPN, especially 30% addition, reduces drastic changes in mechanical properties over time.pt_BR
dc.languageen_USpt_BR
dc.publisherWileypt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceJournal of Applied Polymer Sciencept_BR
dc.subjectBiodegradablept_BR
dc.subjectPolysaccharidespt_BR
dc.subjectRheologypt_BR
dc.titleDevelopment and characterization of starch-based films added ora-pro-nobis mucilage and study of biodegradation and photodegradationpt_BR
dc.typeArtigopt_BR
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