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Article Dans Une Revue ACS Sustainable Chemistry & Engineering Année : 2022

Evaluation of Keratin–Cellulose Blend Fibers as Precursors for Carbon Fibers

Hilda Zahra
Daisuke Sawada
  • Fonction : Auteur
Hannes Orelma
Yibo Ma
Shogo Kumagai
Michael Hummel

Résumé

One main challenge to utilize cellulose-based fibers as the precursor for carbon fibers is their inherently low carbon yield. This study aims to evaluate the use of keratin in chicken feathers, a byproduct of the poultry industry generated in large quantities, as a natural charring agent to improve the yield of cellulose-derived carbon fibers. Keratin−cellulose composite fibers are prepared through direct dissolution of the pulp and feather keratin in the ionic liquid 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH]OAc) and subsequent dry jet wet spinning (so-called Ioncell process). Thermogravimetric analysis reveals that there is an increase in the carbon yield by ∼53 wt % with 30 wt % keratin incorporation. This increase is comparable to the one observed for lignin−cellulose composite fibers, in which lignin acts as a carbon booster due to its higher carbon content. Keratin, however, reduces the mechanical properties of cellulose precursor fibers to a lesser extent than lignin. Keratin introduces nitrogen and induces the formation of pores in the precursor fibers and the resulting carbon fibers. Carbon materials derived from the keratin−cellulose composite fiber show potential for applications where nitrogen doping and pores or voids in the carbon are desirable, for example, for low-cost bio-based carbons for energy harvest or storage.
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Origine : Publication financée par une institution

Dates et versions

hal-03746914 , version 1 (06-08-2022)

Identifiants

Citer

Hilda Zahra, Julian Selinger, Daisuke Sawada, Yu Ogawa, Hannes Orelma, et al.. Evaluation of Keratin–Cellulose Blend Fibers as Precursors for Carbon Fibers. ACS Sustainable Chemistry & Engineering, 2022, 10 (26), pp.8314 - 8325. ⟨10.1021/acssuschemeng.2c00976⟩. ⟨hal-03746914⟩
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