Stretchable, self-healing, conductive hydrogel fibers for strain sensing and triboelectric energy-harvesting smart textiles

By Luyizheng Shuai, Z. Guo, Panpan Zhang, Junmin Wan, Xiong Pu, Zhong Lin Wang. 2020

262 citations recorded by the source corpus.

Abstract Stretchable conductive fibers are essential for smart electronic textiles (E-textiles). Here, we develop a continuous dry-wet spinning approach to fabricate stretchable, conductive and self-healing hydrogel fibers. By tuning the contents of acrylamide (AAm) and N-acryloylglycinamide (NAGA), the physically cross-linked poly (NAGA-co-AAm) (PNA) hydrogel precursor exhibits thermally reversible sol-gel transition, which ensures the success of the spinning process. The obtained PNA hydrogel fiber achieves excellent tensile strength (2.27 Mpa), stretchability (900%), high conductivity (0.69 S m−1), and self-healing capability. With an elastomeric poly (methyl acrylate) (PMA) coating, the PNA/PMA core-sheath fiber shows excellent resistance to water evaporation and absorption. The strain sensing capability of the PNA/PMA fiber is demonstrated for monitoring human body motions. Furthermore, a triboelectric nanogenerator (TENG) textile woven from the PNA/PMA fibers is fabricated to convert mechanical motion energy into electric power. Our stretchable conductive hydrogel fibers suggest great potentials for next-generation multifunctional smart textiles and wearable electronics.

Subfields: Biomedical Engineering, Cognitive Neuroscience, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/2a90510c0a021c3c55887313ce5ec9d76250200a

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In Biomedical Engineering

  1. Chuntai Liu
  2. Changyu Shen
  3. K. Dai
  4. Zhanhu Guo

In Polymers and Plastics

  1. Chuntai Liu
  2. Changyu Shen
  3. K. Dai
  4. Zhanhu Guo

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