Nano- and macroscale structural and mechanical properties of in situ synthesized bacterial cellulose/PEO-b-PPO-b-PEO biocomposites

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dc.contributor.authorTercjak, Agnieszka
dc.contributor.authorGutierrez, Junkal
dc.contributor.authorBarud, Hernane da Silva [UNESP]
dc.contributor.authorDomeneguetti, Rafael Romano [UNESP]
dc.contributor.authorRibeiro, Sidney José Lima [UNESP]
dc.contributor.institutionUniversity of the Basque Country (UPV/EHU)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCentro Universitário de Araraquara (UNIARA)
dc.date.accessioned2015-10-21T20:23:25Z
dc.date.available2015-10-21T20:23:25Z
dc.date.issued2015-02-25
dc.description.abstractHighly transparent biocomposite based on bacterial cellulose (BC) mat modified with poly(ethylene oxide-b-propylene oxide-b-ethylene oxide) block copolymer (EPE) were fabricated in situ during biosynthesis of bacterial cellulose in a static culture from Gluconacetobacter xylinum. The effect of the addition to the culture medium of water-soluble EPE block copolymer on structure, morphology, crystallinity, and final properties of the novel biocomposites was investigated at nano- and macroscale. High compatibility between components was confirmed by ATR-FTIR indicating hydrogen bond formation between the OH group of BC and the PEO block of EPE block copolymer. Structural properties of EPE/BC biocomposites showed a strong effect of EPE block copolymer on the morphology of the BC mats. Thus, the increase of the EPE block copolymer content lead to the generation of spherulites of PEO block, clearly visualized using AFM and MO technique, changing crystallinity of the final EPE/BC biocomposites investigated by XRD. Generally, EPE/BC biocomposites maintain thermal stability and mechanical properties of the BC mat being 1 wt % EPE/BC biocomposite material with the best properties. Biosynthesis of EPE/BC composites open new strategy to the utilization of water-soluble block copolymers in the preparation of BC mat based biocomposites with tunable properties.en
dc.description.affiliationUniversity of the Basque Country, Department of Chemical and Environmental Engineering, Polytechnic School
dc.description.affiliationCento Universitário de Araraquara (UNIARA)
dc.description.affiliationUnespUniversidade Estadual Paulita, Departamento de Química Geral e Inorgânica, Instituto de Química de Araraquara
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipBasque Country Government
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipMICINN
dc.description.sponsorshipIdBasque Country Government: IT-776-13
dc.description.sponsorshipIdMINECO: MAT2012-31675
dc.description.sponsorshipIdMICINN: RYC-2010-05592
dc.format.extent4142-4150
dc.identifierhttp://pubs.acs.org/doi/abs/10.1021/am508273x
dc.identifier.citationAcs Applied Materials &interfaces. Washington: Amer Chemical Soc, v. 7, n. 7, p. 4142-4150, 2015.
dc.identifier.doi10.1021/am508273x
dc.identifier.issn1944-8244
dc.identifier.lattes6446047463034654
dc.identifier.orcid0000-0003-3286-9440
dc.identifier.urihttp://hdl.handle.net/11449/129113
dc.identifier.wosWOS:000350193000033
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofAcs Applied Materials &interfaces
dc.relation.ispartofjcr8.097
dc.relation.ispartofsjr2,784
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectBacterial celluloseen
dc.subjectBlock copolymeren
dc.subjectBiocompositesen
dc.subjectAtomic force microscopyen
dc.subjectMechanical propertiesen
dc.titleNano- and macroscale structural and mechanical properties of in situ synthesized bacterial cellulose/PEO-b-PPO-b-PEO biocompositesen
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/page/copyright/index.html
dcterms.rightsHolderAmer Chemical Soc
unesp.author.lattes6446047463034654
unesp.author.orcid0000-0003-3286-9440[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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