ArticleACS omega2025
Optimization Process of PCL/TPU@MWCNTs Fiber Composites for Flexible Piezoresistive Sensors and Application in Hand Movements Perception.
Article in ACS omega, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study outlines the optimization process for a polycaprolactone (PCL)/polyurethane (TPU)@multiwalled carbon nanotubes (MWCNTs) fiber composite, designed explicitly for flexible piezoresistive sensors. The PCL/TPU fiber membrane prepared by electrospinning technology was used as the substrate. Functionalized MWCNTs, serving as exogenous conductive particles, were deposited on the membrane via vacuum filtration, thereby preparing the PCL/TPU@MWCNTs fiber composite. This study investigated the morphological characteristics, hydrophobicity, mechanical properties, and conductivity of the PCL/TPU@MWCNTs fiber composite. The aim was to determine suitable preparation parameters for flexible pressure sensors ideal for outdoor and medical applications. The test results indicated that the membrane spun at 28 kV and a spinning distance of 20 cm exhibited optimal mechanical properties. With a filtration volume of 7.5 mL, the MWCNTs in the membrane were uniformly distributed, with a thickness of 0.05 ± 0.01 mm, a water contact angle of 131°, a tensile strength of 14 MPa, an elongation at break of 32.4%, and a conductivity of 1.74 × 10
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