. The Effect of TiO2 nanoparticles on the morphology, electrical, mechanical properties, and electrochemical actuation of polyaniline coated webs of pva nanofiber was investigated. Also with using of image processing, the actuation strain of fiber in nanofiber webs have been estimated. Results show that,viscosity of polymer soulation and mean fiber diameter enhance with increased percentage of nanoparticles in constant concentration of polymer. In this work, electrical resistance of polyaniline coated webs of nanofiber is depend on the applied pressure on the surface of nanofiber webs and percentage of TiO2 nanoparticles. Electrical resistance reduced considerably as applied pressure on the surface of nanofiber webs. Moreover, electrical resistance reduced with increase percentage of TiO2 nanoparticles. Cyclic voltammogram of polyaniline coated nanofiber webs, shows that TiO2 nanoparticles increased the peak of electrochemical redox reaction. Furthermore, current from nanofiber webs with 15wt% of nanoparticles, was 2times higher tha polyaniline coated webs of PVA nanofiber without nanoparticles, opproximately. It is also observed that TiO2 nanoparticles increas actuation strain of polyaniline coated nanofiber webs. In this work, strain actuation of fibers was estimated by using image processing on the SEM of nanofiber webs. The Results show that actuation strain of fibers which estimated by image processing, is considerably more than of actuation strain of nanofiber webs that was produced by experiments. Results show that increase of orientation between nanofiber causes increase actuation strain of nanofiber webs. Overall, considering the presence of TiO2 nanoparticles in polyaniline coated nanofiber webs depicted excellent electrical and electrochemical effectiveness.
