Affiliation:
1. Chalmers University of Technology
Abstract
Carbon nanofibrous sheets (conductivity 1.9 to 35.5 S×cm-1, water contact angle up to 137°) consisting of amorphous fibers with diameter of 20 – 150 nm (C:O atomic ratio 25.4 – 86.0) were synthesized by carbonization of cellulose regenerated from electrospun cellulose acetate mats with three methods of alkaline deacetylation. It was established that C:O atomic ratio, conductivity and hydrophobicity depended on the regeneration method and on the temperature of carbonization. The highest flexibility, lowest conductivity and lowest water contact angle was observed for carbon synthesized from cellulose regenerated with NaOH in ethanol (0.05 mol/l) for 24 hours at room temperature. The highest conductivity, highest water contact angle and lowest flexibility was observed for carbon synthesized from cellulose regenerated with water solution of NaOH/NaCl (3.75 M NaOH, 2.1 M NaCl) during 15 minutes at 65°C.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference12 articles.
1. P. Morgan, Carbon Fibers and their Composites, Taylor&Fransis, Boca Raton, (2005).
2. G. Gellerstedt, E. Sjöholm, I. Brodin, The wood-based biorefinery: a source of carbon fiber?, The Open Agriculture J. 3 (2010) 119-124.
3. L. Dubrovina et al., Carbon-loaded porous composites produced by matrix carbonization of Poly(vinylidene fluoride), Inorganic Materials 44 (2008) 697-704.
4. O. Ishida, D. -Y. Kim, S. Kuga et al., Microfibrillar carbon from native cellulose, Cellulose 11 (2004) 475-480.
5. Y. Chen, X. -p. Xiong, G. Yang, Characterization of regenerated cellulose membranes hydrolyzed from cellulose acetate, Chinese J. of Polymer Sci. 20 (2002) 369-375.
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献