Close Packing of Cellulose and Chitosan in Regenerated Cellulose Fibers Improves Carbon Yield and Structural Properties of Respective Carbon Fibers

No Thumbnail Available

Access rights

openAccess
publishedVersion

URL

Journal Title

Journal ISSN

Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2020-10-12

Major/Subject

Mcode

Degree programme

Language

en

Pages

10

Series

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

Keywords

Other note

Citation

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