An Antisweat Interference and Highly Sensitive Temperature Sensor Based on Poly(3,4-ethylenedioxythiophene)–Poly(styrenesulfonate) Fiber Coated with Polyurethane/Graphene for Real-Time Monitoring of Body Temperature

Body temperature is an important indicator of human health. The traditional mercury and medical electronic thermometers have a slow response (≥1 min) and can not be worn for long to achieve continuous temperature monitoring due to their rigidity. In this work, we prepared a skin-core structure polyurethane (PU)/graphene encapsulated poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) temperature-sensitive fiber in one step by combining wet spinning technology with impregnation technology. The composite fiber has high sensitivity (−1.72%/°C), super-resolution (0.1 °C), fast time response (17 s), antisweat interference, and high linearity (R2 = 0.98) in the temperature sensing range of 30–50 °C.…

• NF
  Nanjing Forestry University
• NN
  National Natural Science Foundation of China

  Awards: 32201491, 710049, 52073224
• XP
  Xi'an Polytechnic University
• ED
  Education Department of Shaanxi Province

  Award: 2022JC035
• KR
  Key Research and Development Projects of Shaanxi Province

  Awards: GY-377, 2023-YBGY-487
• NS
  Natural Science Basic Research Program of Shaanxi Province

  Award: 2022JQ-039