Enzyme treated CNF biofilms: Characterization

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dc.contributor.authorPoyraz, Bayram
dc.date.accessioned2020-05-01T12:11:53Z
dc.date.available2020-05-01T12:11:53Z
dc.date.issued2018
dc.departmentDÜ, Teknoloji Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.descriptionWOS: 000442057700082en_US
dc.descriptionPubMed: 29859279en_US
dc.description.abstractThe objective of this study was to characterize on the chemical, mechanical, electrical and thermal properties of nanofibrillated cellulose based polyvinyl alcohol (PCNF) and silica (SiCNF) films obtained from Pulpzyme HC 2500 and Celluclast 1.5 L enzyme treated kraft-NaBH4 pulps. Morphological alterations were monitored with SEM. Thermal stability, chemical characterization and crystallization were determined using TGA and FT-IR. Young's and storage moduli of the films were determined via a universal testing machine and DTMA. Dielectric properties were evaluated using an impedance analyzer. In the PCNF films, new vibrations and chemical shifts were observed. The crystallinity values of the SiCNF films calculated from the FT-IR were in agreement with the TGA results, revealing that the lowest crystallinity value was in the SiCNF. The higher Young modulus and elongation at break value were obtained in the neat the CNF films while the lowest values were observed in the neat SiCNF films. However, the SiCNF films revealed higher thermo-mechanical property. The PCNF and SiCNF films exhibit more visible dielectric behavior than that of the neat CNF films. Higher thermal stability, thermo-mechanical and mechanical properties were determined in the Pulpzyme HC 2500 enzyme treated films. Hence, this study evidenced that the properties of CNF films having different matrix are influenced by both the enzymes employed. (C) 2018 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipTUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [COST 1140022]; Istanbul University Research FundIstanbul University [4806, 19515]en_US
dc.description.sponsorshipThe authors thank TUBITAK (Project Number: COST 1140022) for support in this research. The authors also thank Istanbul University Research Fund for its financial support in this study (Project Number: 4806 and Project Number: 19515).en_US
dc.identifier.doi10.1016/j.ijbiomac.2018.05.222en_US
dc.identifier.endpage720en_US
dc.identifier.issn0141-8130
dc.identifier.issn1879-0003
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage713en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijbiomac.2018.05.222
dc.identifier.urihttps://hdl.handle.net/20.500.12684/6248
dc.identifier.volume117en_US
dc.identifier.wosWOS:000442057700082en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofInternational Journal Of Biological Macromoleculesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNanofilmsen_US
dc.subjectEnzyme effecten_US
dc.subjectChemical propertiesen_US
dc.subjectThermo-mechanical propertiesen_US
dc.titleEnzyme treated CNF biofilms: Characterizationen_US
dc.typeArticleen_US

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