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
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Date
2020-10-12
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en
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10
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Biomacromolecules, Volume 21, issue 10, pp. 4326-4335
Abstract
A 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.Description
| openaire: EC/H2020/715788/EU//WoCaFi
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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