Vigilancia Tecnológica

Preparation process diagram of MWCNTs/PANI@MWCNTs/PAN fiber.AbstractWearable smart sensors have broad prospects in medical health and physical exercise. In this study, the core–shell conductive fiber membrane was prepared by adding multiwalled carbon nanotubes during polymerization of aniline on spun fibers. In comparison to the conventionally utilized polymerized aniline, the integration of carbon nanotube particulates enhances the conductivity and surface area, provides more aniline polymerization sites, and simultaneously increases the stability of the composite film. The pressure sensor has a sensitivity of 61.12, 40.32, and 23.17?kPa?1 in the range of 0–7.1?kPa, 7.1–11.1?kPa, and 11.1–19.54?kPa. In addition, it has a fast response time (loading time of 120?ms and unloading time of only 22?ms) and exhibits excellent cyclic stability through numerous loading–unloading cycles. These properties enable the sensor to be applied to real?time monitoring of human sports health, such as knee and elbow bending, mouse clicking, beaker holding, and so on. This research method provides a new strategy and technology for conducting polymers as materials for flexible electronic equipment.