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Solvent Vapour-Sensitive Activated Carbon Submicrofibres Based on Electrospun Polyacrylonitrile Fibre Mat

Research and development

Author:

  • Gliścińska Eulalia
    Center of Advanced Technologies of Human Friendly Textiles PRO HUMANO TEX, Department of Material and Commodity Sciencs and Textile Metrology, Technical University of Lodz, Łódź, Poland

Nr DOI: 10.5604/12303666.1152737

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Abstract:

Precursor polyacrylonitrile submicrofibres with a diameter of about 900 nm, electrospun from polyacrylonitrile/dimethyl sulfoxide (PAN/DMSO) solution, were carbonised and chemically activated. These submicrofibres, characterised by a porous structure more developed than in the case of standard fibres, were investigated as solvent vapour sensors. Sensitivity to vapours of four different fluids: methanol, acetone, benzene & toluene at a low concentration of 200 ppm, was studied directly for fibres and for ones in a prototype textile multilayer system. In experiments the electrical conductivity of carbon fibres was utilised. The response time and sensority coefficient, indicating quantitative changes in electric resistance due to contact with the solvent vapours, were estimated. The activated carbon submicrofibres are characterised by sensitivity, a very short response time not longer than 20 s, stability, and selectivity in relation to vapours of polar and non-polar solvents. The sensitivity to vapours of polar solvents is higher than that to those of non-polar solvents.

Tags:

electrospinning, polyacrylonitrile, activated carbon submicrofibres, vapours, sensitivity.

Citation:

Gliścińska E. Solvent Vapour-Sensitive Activated Carbon Submicrofibres Based on Electrospun Polyacrylonitrile Fibre Mat.
FIBRES & TEXTILES in Eastern Europe 2015; 23, 4(112): 96-102. DOI: 10.5604/12303666.1152737

Published in issue no 4 (112) / 2015, pages 96–102.

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