Characterization of electro-conductive textile materials by its biaxial anisotropy coefficient and resistivity

Woven and knitted fabrics were chosen to determine their electro-conductive properties. Van der Pauw equation modified by Wasscher for anisotropic materials was used. The electrical conductivity of textile materials was anisotropic as indicated by the biaxial anisotropy coefficient being in the range from 1.1 to 7.2. Resistance was higher when current flows between electrodes arranged on the line parallel to the warp and course direction in the case of woven or knitted fabrics respectively. Results of analysis confirmed the effect of sample surface roughness on its electro-conductive properties. Sample with a smooth surface will conduct electrical current better than sample with a rough one. Electrical resistivity of the fabrics indicated that they can be used as paths for conveying electrical signals.