Carbon Nanofibers Synthesized from Electrospun Cellulose for Advanced Materials Applications
Paper in proceeding, 2013
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.
electrospun cellulose
alkaline regeneration
Carbon nanofibers
Author
Olga Naboka
Chalmers, Applied Physics, Electronics Material and Systems
Katia Rodriguez
Chalmers, Chemical and Biological Engineering, Polymer Technology
Farshad Toomadj
Chalmers, Applied Physics, Electronics Material and Systems
Anke Sanz-Velasco
Chalmers, Applied Physics, Electronics Material and Systems
Guillermo Toriz Gonzalez
Chalmers, Chemical and Biological Engineering, Polymer Technology
Per Lundgren
Chalmers, Applied Physics, Electronics Material and Systems
Peter Enoksson
Chalmers, Applied Physics, Electronics Material and Systems
Wallenberg Wood Science Center (WWSC)
Paul Gatenholm
Wallenberg Wood Science Center (WWSC)
Chalmers, Chemical and Biological Engineering, Polymer Technology
Materials Science Forum
0255-5476 (ISSN) 16629752 (eISSN)
Vol. 730-732 903-908
VI Intern ational Materials Symposium – ‘Materiais 2011
Guimarães, Portugal,
Guimarães, Portugal,
Subject Categories
Polymer Chemistry
Materials Engineering
Materials Chemistry
Areas of Advance
Nanoscience and Nanotechnology
Transport
Production
Materials Science
Infrastructure
Nanofabrication Laboratory
DOI
10.4028/www.scientific.net/MSF.730-732.903