Flexible Wearable Sensors Based in Carbon Nanotubes Reinforced Poly(Ethylene Glycol) Diglycidyl Ether (PEGDGE): Analysis of Strain Sensitivity and Proof of Concept

The electromechanical capabilities of carbon nanotube (CNT) doped poly(ethylene glycol) diglycidyl ether (PEGDGE) have been explored. In this regard, the effect both CNT content and curing conditions were analyzed. electrical conductivity increased with temperature due to lower gel time that leads a reaggregation during curing. More specifically, percolation threshold at 160 180 °C temperatures is below 0.01 wt.%, limit increases up 0.1 wt.% 140 for an 8 h cycle. Moreover, strain monitoring investigated, contact resistance was also contacts made silver ink led higher values gauge factor (GF) but presented some issues very high strains their possible detachment testing. every case, GF far above conventional metallic gauges significant exponential behavior, especially low prevalence tunneling mechanisms. Finally, proof concept fingers knee motion carried out, showing sensitivity human sensing.