Close Packing of Cellulose and Chitosan in Regenerated Cellulose Fibers Improves Carbon Yield and Structural Properties of Respective Carbon Fibers
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Biomacromolecules, Volume 21, issue 10
AbstractA low carbon yield is a major limitation for the use of cellulose-based filaments as carbon fiber precursors. The present study aims to investigate the use of an abundant biopolymer chitosan as a natural charring agent particularly on enhancing the carbon yield of the cellulose-derived carbon fiber. The ionic liquid 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH]OAc) was used for direct dissolution of cellulose and chitosan and to spin cellulose-chitosan composite fibers through a dry-jet wet spinning process (Ioncell). The homogenous distribution and tight packing of cellulose and chitosan revealed by X-ray scattering experiments enable a synergistic interaction between the two polymers during the pyrolysis reaction, resulting in a substantial increase of the carbon yield and preservation of mechanical properties of cellulose fiber compared to other cobiopolymers such as lignin and xylan.
| openaire: EC/H2020/715788/EU//WoCaFi
Zahra , H , Sawada , D , Guizani , C , Ma , Y , Kumagai , S , Yoshioka , T , Sixta , H & Hummel , M 2020 , ' Close Packing of Cellulose and Chitosan in Regenerated Cellulose Fibers Improves Carbon Yield and Structural Properties of Respective Carbon Fibers ' , Biomacromolecules , vol. 21 , no. 10 , pp. 4326-4335 . https://doi.org/10.1021/acs.biomac.0c01117