Influence of photodegradation with UV radiation in biotreatment with Paecilomyces variotti on PHBV/GNS nanocomposites

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dc.citation.issue3
dc.citation.volumev. 12
dc.contributor.authorMontagna, Larissa Stieven [UNIFESP]
dc.contributor.authorMontanheiro, Thais Larissa do Amaral [UNIFESP]
dc.contributor.authorBorges, Aline Chiodi
dc.contributor.authorKoga-Ito, Cristiane Yumi
dc.contributor.authorLemes, Ana Paula [UNIFESP]
dc.contributor.authorRezende, Mirabel Cerqueira [UNIFESP]
dc.coverageHertford
dc.date.accessioned2020-07-20T16:31:02Z
dc.date.available2020-07-20T16:31:02Z
dc.date.issued2018
dc.description.abstractGraphite nanosheets (GNSs) and poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) nanocomposites were prepared by solution casting method. This study aimed to evaluate the effects of previously phototreatment with ultraviolet (UV) radiation on the biotreatment with Paecilomyces variotti of neat PHBV and PHBV/GNS nanocomposites. Some samples of PHBV film were submitted only to biotreatment with P. variotti during 120 daysen
dc.description.abstractother samples were subjected to phototreatment (UV radiation) for 30h followed by biodegradation assessment with P. variotti for a period of 120 days. The effects of biotreatments on thermal properties were studied through differential scanning calorimetry. The PHBV films were monitored by weight changes as a function of time. Also, their surfaces were examined after the tests using scanning electron microscopy, contact angle and roughness measurements. The level of oxidation was recorded by means of carbonyl index evaluation by Fourier transformed infrared spectroscopy spectroscopy. The phototreatment of PHBV films influenced the process of adhesion and colonisation by P. variotti on the surface of the films, and enhanced morphological and structural changes.en
dc.description.affiliationFed Univ Sao Paulo UNIFESP, Inst Sci & Technol, Technol Lab Polymers & Biopolymers TecPBio, Talim 330, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationSao Paulo State Univ UNESP, Inst Sci & Technol, Dept Environm Engn, Rodovia Presidente Dutra,Km 137-8, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnifespFed Univ Sao Paulo UNIFESP, Inst Sci & Technol, Technol Lab Polymers & Biopolymers TecPBio, Talim 330, Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCNPq
dc.description.sponsorshipFAPESP (Brazil)
dc.description.sponsorshipCAPES/PVNS
dc.description.sponsorshipIDCNPq: 158961/2014-5
dc.description.sponsorshipIDCNPq: 303287/2013-6
dc.format.extent285-291
dc.identifierhttp://dx.doi.org/10.1049/iet-nbt.2017.0020
dc.identifier.citationIet Nanobiotechnology. Hertford, v. 12, n. 3, p. 285-291, 2018.
dc.identifier.doi10.1049/iet-nbt.2017.0020
dc.identifier.issn1751-8741
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/55654
dc.identifier.wosWOS:000427792000008
dc.language.isoeng
dc.publisherInst Engineering Technology-Iet
dc.relation.ispartofIet Nanobiotechnology
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectultraviolet radiation effectsen
dc.subjectnanocompositesen
dc.subjectgraphiteen
dc.subjectpolymer blendsen
dc.subjectcastingen
dc.subjectnanofabricationen
dc.subjectbiodegradable materialsen
dc.subjectscanning electron microscopyen
dc.subjectdifferential scanning calorimetryen
dc.subjectcontact angleen
dc.subjectsurface roughnessen
dc.subjectoxidationen
dc.subjectFourier transform infrared spectraen
dc.subjectadhesionen
dc.subjectphotodegradationen
dc.subjectbiotreatmenten
dc.subjectPaecilomyces variottien
dc.subjectnanocompositesen
dc.subjectgraphite nanosheetsen
dc.subjectpoly(hydroxybutyrate-co-hydroxyvalerate)en
dc.subjectsolution castingen
dc.subjectultraviolet radiationen
dc.subjectbiodegradation assessmenten
dc.subjectthermal propertiesen
dc.subjectdifferential scanning calorimetryen
dc.subjectscanning electron microscopyen
dc.subjectcontact angleen
dc.subjectroughness measurementsen
dc.subjectoxidationen
dc.subjectcarbonyl index evaluationen
dc.subjectFourier transformed infrared spectroscopyen
dc.subjectadhesionen
dc.subjectcolonisationen
dc.subjectmorphological changeen
dc.subjectstructural changeen
dc.subjecttime 120 den
dc.subjecttime 30 hen
dc.subjectCen
dc.titleInfluence of photodegradation with UV radiation in biotreatment with Paecilomyces variotti on PHBV/GNS nanocompositesen
dc.typeinfo:eu-repo/semantics/article
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