TY - JOUR

T1 - Structure and electrical resistivity of individual carbonised natural and man-made cellulose fibres

AU - Gindl-Altmutter, Wolfgang

AU - Czabany, Ivana

AU - Unterweger, Christoph

AU - Gierlinger, Notburga

AU - Xiao, Nannan

AU - Bodner, Sabine C.

AU - Keckes, Jozef

PY - 2020/5/7

Y1 - 2020/5/7

N2 - Carbon fibres were produced from two natural and two man-made cellulose fibres, respectively, in a high-temperature carbonisation process. The structure of the fibres was analysed by means of wide-angle X-ray scattering and Raman spectroscopy. It was found that longitudinal shrinkage of the fibres during carbonisation is correlated with the degree of orientation of cellulose crystals as determined by wide-angle X-ray scattering. Numerous micro-scale defects were found in carbonised natural cellulose fibres, particularly hemp, whereas the structural integrity of carbonised man-made cellulose was better preserved. Both Raman spectroscopy and wide-angle X-ray scattering revealed a trend of diminishing electrical resistivity with increasing structural (graphitic) order in the fibres. Overall, the electrical resistivity of cellulose-derived carbon fibres was between 40 and 70 Ω µm, which exceeds the resistivity of fossil-based carbon fibre by a factor ten.

AB - Carbon fibres were produced from two natural and two man-made cellulose fibres, respectively, in a high-temperature carbonisation process. The structure of the fibres was analysed by means of wide-angle X-ray scattering and Raman spectroscopy. It was found that longitudinal shrinkage of the fibres during carbonisation is correlated with the degree of orientation of cellulose crystals as determined by wide-angle X-ray scattering. Numerous micro-scale defects were found in carbonised natural cellulose fibres, particularly hemp, whereas the structural integrity of carbonised man-made cellulose was better preserved. Both Raman spectroscopy and wide-angle X-ray scattering revealed a trend of diminishing electrical resistivity with increasing structural (graphitic) order in the fibres. Overall, the electrical resistivity of cellulose-derived carbon fibres was between 40 and 70 Ω µm, which exceeds the resistivity of fossil-based carbon fibre by a factor ten.

UR - http://www.scopus.com/inward/record.url?scp=85084257841&partnerID=8YFLogxK

U2 - 10.1007/s10853-020-04743-y

DO - 10.1007/s10853-020-04743-y

M3 - Article

AN - SCOPUS:85084257841

VL - 55.2020

SP - 10271

EP - 10280

JO - Journal of materials science

JF - Journal of materials science

SN - 0022-2461

IS - 23

ER -