Fabrication and piezoresistive property of TPU/MWNTs oriented nanofibers

Electrospinning was applied to produce oriented nanofibers consisting of thermal-plastic polyurethane(TPU)and multi-walled nanotubes(MWNTs)composites.Comparison TPU/MWNTs films were made through casting technology.The relationship between relative changes in resistance versus tensile strain has been analyzed.The maximum gauge factor(≈11.4)of fibers was reached when the mass fraction of MWNTs was 1.84%.At the same mass fraction,gauge factor of films was only 2.6.The piezoresistive response of fibers was linear within 8%of tensile strain which was better than that of TPU/MWNTs films.