Pressure and gas sensing composition based on PVDF nano particulates: a review

Poly (vinyl difluoride) (PVDF) polymer-based pressure sensors have received massive attraction among the research community due to easier processability, higher selectivity, high thermal stability, chemical resistance, cost effectiveness and ecofriendly. Among the varieties candidate of engineering polymers, PVDF has been extensively explored for sensing applications due to its extraordinary ferroelectric nature and superb piezoelectric characteristics. Recently, different nanoparticles mainly carbon nanotubes (CNT), graphene (GR), metal powder, inorganic oxide and various fibers have been added to fabricate pressure-sensing composites materials using various routes. This review article provides comprehensive understanding and recent trends in the promising performance of PVDF-based sensors in various applications. This review will mainly highlight the various compositions of PVDF-based nanoparticulate sensing materials and their characteristics. We will also describe the detailed description of methods adopted for production of PVDF sensor and its derivatives sensors and their usages. In addition, a comparative analysis of sensing performance with other materials was performed to clearly evaluate its potential for commercial applications. Finally, the key issue associated with adding different nano particles or fibers to fabricate and measure the sensitivity will be focused. Furthermore, recommendation and future research trends to explore further the promising results for next generation sensing applications will be discussed.