Significant-performance conductive fabrics as multifunctional sensors

Although flexible wearable conductive textiles for various applications have attracted a lot of attention from researchers in recent years, their fabrication with simple processes, excellent flexibility, environmental friendliness and superior performance remains a great challenge. Polypyrrole is gradually emerging in the field of flexible electronics due to its low cost, excellent conductivity and biocompatibility. Cotton fabrics were modified using dopamine, and then PPy was grown in situ on dopamine-coated cotton fabrics to prepare polypyrrole/dopamine/cotton fabrics with excellent electrothermal and pressure-sensing properties. The polypyrrole/dopamine/cotton fabric has good electrical conductivity, electrical heating temperature rise performance and heating stability. The surface temperature of polypyrrole/dopamine/cotton fabric can reach 115.5 degrees C in 100 s at 5 v. And the flexible pressure sensor prepared based on polypyrrole/dopamine/cotton fabric exhibits the combined advantages of wide operating range (0-16 kPa) and high sensitivity (60.23 kPa(-1)). In addition, real-time monitoring of human motion and wrist pulses is possible. Compared with existing studies, polypyrrole/dopamine/cotton fabric shows better performance in both heating and sensing and achieves simultaneous access. These results demonstrate the potential application value and broad prospect of polypyrrole/dopamine/cotton fabric in flexible wearable electronics.