Smart-fabric sensor composed of single-walled carbon nanotubes containing binary polymer composites for health monitoring

• Published in: Composites science and technology Vol. 163; pp. 1 - 9
• Main Authors: Aziz, Shahid, Chang, Seung-Hwan
• Format: Journal Article
• Language: English
• Published: Barking Elsevier Ltd 28.07.2018; Elsevier BV
• Subjects: A. Carbon nanotubes; A. particle-reinforced composite; B. durability; B. electrical properties; Fluorides; Impedance; Nanotubes; Polymer matrix composites; Polymers; Sensitivity; Sensors; Single wall carbon nanotubes; Vinylidene; Vinylidene fluoride; B. electrical properties; B. durability; A. particle-reinforced composite; A. Carbon nanotubes
• ISSN: 0266-3538; 1879-1050
• DOI: 10.1016/j.compscitech.2018.05.012

A smart-fabric sensor for health monitoring has been fabricated using composite of single-walled carbon nanotubes (SWCNTs)-filled binary polymer of poly vinylidene fluoride/poly (3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PVDF/PEDOT:PSS). The response curves and working principle were investigated, and sensors were fabricated to achieve a highly linear and stable response for a wide range of temperatures (25–100 °C) and bending angles. The sensors show a stable and nearly linear response of impedance change by varying temperatures in the range of 25–100 °C. The impedance of the sensors changed from 5.8 MΩ to 2.95 MΩ for temperature change in the range of 25–100 °C with a sensitivity of 38 kΩ/°C. The bending movement sensitivity of the sensors was found to be 90 kΩ per degree angle, and the response of the sensor was very stable in the range of 0–120°.