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In Situ Bioprocessing of Bacterial Cellulose with Graphene

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Dhar, Prodyut
dc.contributor.author Etula, Jarkko
dc.contributor.author Bankar, Sandip Balasaheb
dc.date.accessioned 2019-09-20T11:14:35Z
dc.date.available 2019-09-20T11:14:35Z
dc.date.issued 2019-01-01
dc.identifier.citation Dhar , P , Etula , J & Bankar , S B 2019 , ' In Situ Bioprocessing of Bacterial Cellulose with Graphene : Percolation Network Formation, Kinetic Analysis with Physicochemical and Structural Properties Assessment ' , ACS Applied Bio Materials . https://doi.org/10.1021/acsabm.9b00581 en
dc.identifier.issn 2574-0970
dc.identifier.other PURE UUID: b996e24e-ef55-4e7f-89a7-85094b3bfbae
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/b996e24e-ef55-4e7f-89a7-85094b3bfbae
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85071689382&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/36962726/CHEM_Dhar_et_al_In_Situ_Bioprocessing_2019_acsAplMat.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/40339
dc.description.abstract The understanding of microbial growth dynamics during in situ fermentation and production of bacterial cellulose (BC) with impressive properties mimicking artificial nacre, suitable for commodity applications remains fundamentally challenging. Fabrication of BC/graphene films through a single step in situ fermentation with improved properties provides a sustainable replacement to the conventional chemical-based modification using toxic compounds. This work reports the effect of reduced graphene oxide (RGO) on in situ fermentation kinetics and demonstrates the formation of percolated-network in BC/RGO nanostructures. The evaluation of kinetic parameters shows that the specific growth rate reaches optimal values at 3 wt % RGO loadings, with mixed growth associated BC production behavior. The two-dimensional graphene sheets uniformly dispersed into a three-dimensional matrix of BC nanofibers via hydrogen-bonded interactions along with in situ reductions of RGO sheets, as confirmed from spectroscopic studies. This study also demonstrates the presence of percolated network-like structures between BC fibers and RGO platelets, which resulted in the formation of nanostructures with exceptional mechanical robustness and electrical conductivity. The physicochemical and structural properties of fabricated BC/RGO films were found to significantly depend upon the RGO compositions as well as fermentation conditions. We envision that the proposed ecofriendly and scalable technology for the formation of BC/RGO films with excellent inherent properties and performance will attract great interest for its prospective applications in flexible electronics. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries ACS Applied Bio Materials en
dc.rights openAccess en
dc.title In Situ Bioprocessing of Bacterial Cellulose with Graphene en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Chemistry and Materials Science
dc.contributor.department Department of Bioproducts and Biosystems
dc.subject.keyword bacterial cellulose
dc.subject.keyword electrical conductivity
dc.subject.keyword fermentation kinetics
dc.subject.keyword in situ fermentation
dc.subject.keyword structural properties
dc.identifier.urn URN:NBN:fi:aalto-201909205365
dc.identifier.doi 10.1021/acsabm.9b00581
dc.type.version publishedVersion

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