Highly stretchable strain sensor based on polyurethane-modified carbon nanotube buckypaper

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Proceedings titleProceedings of the American Society for Composites Thirty-First Technical Conference: September 19-21, 2016, Williamsburg Lodge, Williamsburg, VA
ConferenceAmerican Society for Composites Thirty-First Technical Conference, September 19-21, 2016, Williamsburg, VA, USA
AbstractThis work focuses on the development of flexible strain sensors based on nanocomposites of thermoplastic polyurethane (TPU) and carbon nanotube (CNT) buckypaper (BP). A one-step filtration process is used to fabricate the TPU-CNT BP sensors, providing tailorability of CNT:TPU ratio. The developed sensors retain the porous morphology of buckypaper even at relatively high TPU content. Characterization of morphology, electrical conductivity, and mechanical properties is reported. In addition, electromechanical response was investigated for both quasistatic loads (strains up to 125%) and cyclic loads (1% and 5% strains). Cyclic tests show a repeatable response that becomes predictable after a few cycles. The combination of mechanical strength, electrical conductivity, and constant and high gauge factor makes this material promising as a free-standing sensing material.
Publication date
AffiliationAerospace; Security and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number23000922
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Record identifier42d4e52f-a9f0-4f42-a660-363c11b94f17
Record created2016-11-16
Record modified2016-11-16
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