EXAMINING THE EFFICIENCY OF MECHANIC/ENZYMATIC PRETREATMENTS IN MICRO/NANOFIBRILLATED CELLULOSE PRODUCTION

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dc.contributor.authorTozluoğlu, Ayhan
dc.contributor.authorPoyraz, Bayram
dc.contributor.authorCandan, Zeki
dc.date.accessioned2020-05-01T12:14:13Z
dc.date.available2020-05-01T12:14:13Z
dc.date.issued2018
dc.departmentDÜ, Orman Fakültesi, Orman Endüstrisi Mühendisliği Bölümüen_US
dc.descriptionWOS: 000435380900006en_US
dc.description.abstractThere is still a need to improve the production sequences of micro fibrillated and nano fibrillated celluloses to obtain more economic and better quality products. The aim of this study was to improve the production efficiency and quality of micro fibrillated and nano fibrillated celluloses by examining the enzyme (xylanase endo-1,4-) employed in pretreatment sequences. Fairly homogeneous nano fibrillated cellulose with a width of 35 +/- 12 nm was produced in this study. Sequences employed to produce micro fibrillated and nano fibrillated celluloses decreased the cellulose crystallinity of bleached kraft pulp and lower total crystalline index and lateral order index values were observed for micro fibrillated and nano fibrillated celluloses in FTIR examinations. Lower crystallinities were also defined by C-13-NMR (46,2 ppm) which was substantiated with C6 peaks in the amorphous domain. Sequences to produce micro fibrillated and nano fibrillated celluloses resulted in shorter fiber dimensions with less ordered cellulose structure leading lower thermal degradation that reveal main polymer chain source from cellulose units. Dynamic mechanical thermal analysis results showed that the initial and maximum storage modulus of the nano fibrillated and micro fibrillated celluloses films were improved by 114% and 101%, respectively. The storage modulus of micro fibrillated and nano fibrillated celluloses films were 4,96 GPa and 2,66 GPa at temperature of 235 degrees C, respectively.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [114O022]en_US
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK Project Number: 114O022).en_US
dc.identifier.doi10.4067/S0718-221X2018005001601en_US
dc.identifier.endpage84en_US
dc.identifier.issn0718-221X
dc.identifier.issue1en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage67en_US
dc.identifier.urihttps://doi.org/10.4067/S0718-221X2018005001601
dc.identifier.urihttps://hdl.handle.net/20.500.12684/6345
dc.identifier.volume20en_US
dc.identifier.wosWOS:000435380900006en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherUniv Bio-Bioen_US
dc.relation.ispartofMaderas-Ciencia Y Tecnologiaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBiofilmen_US
dc.subjectchemical characterizationen_US
dc.subjectKraft pulpen_US
dc.subjecthomogenizationen_US
dc.subjectthermomechanical characterizationen_US
dc.titleEXAMINING THE EFFICIENCY OF MECHANIC/ENZYMATIC PRETREATMENTS IN MICRO/NANOFIBRILLATED CELLULOSE PRODUCTIONen_US
dc.typeArticleen_US

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