Examining the efficiency of mechanic/enzymatic pretreatments in micro/nanofibrillated cellulose production

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dc.creatorAyhan Tozluoğlu
dc.creatorZeki Candan
dc.creatorBayram Poyraz
dc.date2018
dc.date.accessioned2026-07-07T04:38:40Z
dc.descriptionThere 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 13C-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°C, respectively.
dc.formatapplication/pdf
dc.identifier0717-3644
dc.identifierhttps://www.redalyc.org/articulo.oa?id=48557573007
dc.identifierhttps://www.redalyc.org/journal/485/48557573007/
dc.identifierhttps://www.redalyc.org/journal/485/48557573007/html/
dc.identifierhttps://www.redalyc.org/journal/485/48557573007/48557573007.epub
dc.identifierhttps://www.redalyc.org/journal/485/48557573007/movil
dc.identifier.urihttp://hdl.handle.net/123456789/468046
dc.languageen
dc.publisherUniversidad del Bío Bío
dc.relationhttp://www.redalyc.org/revista.oa?id=485
dc.rightsMaderas. Ciencia y Tecnología
dc.sourceMaderas. Ciencia y Tecnología (Chile) Num.1 Vol.20
dc.subjectAgrociencias
dc.titleExamining the efficiency of mechanic/enzymatic pretreatments in micro/nanofibrillated cellulose production
dc.typeartículo científico

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Maderas. Ciencia y Tecnología - Universidad del Bío Bío