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

dc.contributorUniversity of the Basque Country (UPV/EHU)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorCentro Universitário de Araraquara (UNIARA)
dc.creatorTercjak, Agnieszka
dc.creatorGutierrez, Junkal
dc.creatorBarud, Hernane da Silva [UNESP]
dc.creatorDomeneguetti, Rafael Romano [UNESP]
dc.creatorRibeiro, Sidney José Lima [UNESP]
dc.date2015-10-21T20:23:25Z
dc.date2015-10-21T20:23:25Z
dc.date2015-02-25
dc.date.accessioned2023-09-12T06:48:47Z
dc.date.available2023-09-12T06:48:47Z
dc.identifierhttp://pubs.acs.org/doi/abs/10.1021/am508273x
dc.identifierAcs Applied Materials &interfaces. Washington: Amer Chemical Soc, v. 7, n. 7, p. 4142-4150, 2015.
dc.identifier1944-8244
dc.identifierhttp://hdl.handle.net/11449/129113
dc.identifier10.1021/am508273x
dc.identifierWOS:000350193000033
dc.identifier6446047463034654
dc.identifier0000-0003-3286-9440
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8778453
dc.descriptionHighly 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.
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionBasque Country Government
dc.descriptionMinisterio de Economía y Competitividad (MINECO)
dc.descriptionMICINN
dc.descriptionUniversity of the Basque Country, Department of Chemical and Environmental Engineering, Polytechnic School
dc.descriptionCento Universitário de Araraquara (UNIARA)
dc.descriptionUniversidade Estadual Paulita, Departamento de Química Geral e Inorgânica, Instituto de Química de Araraquara
dc.descriptionBasque Country Government: IT-776-13
dc.descriptionMINECO: MAT2012-31675
dc.descriptionMICINN: RYC-2010-05592
dc.format4142-4150
dc.languageeng
dc.publisherAmer Chemical Soc
dc.relationAcs Applied Materials &interfaces
dc.relation8.097
dc.relation2,784
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectBacterial cellulose
dc.subjectBlock copolymer
dc.subjectBiocomposites
dc.subjectAtomic force microscopy
dc.subjectMechanical properties
dc.titleNano- and macroscale structural and mechanical properties of in situ synthesized bacterial cellulose/PEO-b-PPO-b-PEO biocomposites
dc.typeArtigo


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