Close Packing of Cellulose and Chitosan in Regenerated Cellulose Fibers Improves Carbon Yield and Structural Properties of Respective Carbon Fibers.
Journal
Biomacromolecules
ISSN: 1526-4602
Titre abrégé: Biomacromolecules
Pays: United States
ID NLM: 100892849
Informations de publication
Date de publication:
12 10 2020
12 10 2020
Historique:
pubmed:
2
9
2020
medline:
22
6
2021
entrez:
2
9
2020
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 32870661
doi: 10.1021/acs.biomac.0c01117
pmc: PMC7608939
doi:
Substances chimiques
Carbon Fiber
0
Carbon
7440-44-0
Cellulose
9004-34-6
Chitosan
9012-76-4
rayon, purified
BX81F82EWG
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
4326-4335Références
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