J. Mater. Sci. Technol. ›› 2023, Vol. 138: 108-116.DOI: 10.1016/j.jmst.2022.08.010

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Multifunctional hydrophobic fabric-based strain sensor for human motion detection and personal thermal management

Tianxue Zhua,1, Lexin Liua,1, Jianying Huanga, Shuhui Lib,c, Yonggang Leia, Weilong Caia,*, Yuekun Laia,*, Huaqiong Lib,d,*   

  1. aCollege of Chemical Engineering, Fuzhou University, Fuzhou 350116, China;
    bZhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 3250 0 0, China;
    cDepartment of Chemistry, University College London, London WC1E 6BT, UK;
    dOujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou 325000, China
  • Received:2022-05-10 Revised:2022-05-10 Accepted:2022-05-10 Published:2023-03-01 Online:2023-03-03
  • Contact: * Zhejiang Engineering Research Center for Tissue Re- pair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wen- zhou 325000, China. E-mail addresses:. wl.cai@fzu.edu.cn (W. Cai), yklai@fzu.edu.cn (Y. Lai), lihq@ucas.ac.cn (H. Li)
  • About author:1 These authors contributed equally to this work.

Abstract: Multifunctional flexible devices for human motion detection and thermal management raised great attention as the problem of the aging population is becoming more and more serious. However, it is still a challenge to endow the devices with excellent stability and wide application scope. Here we prepared a hydrophobic and conductive fabric-based strain sensor for smart fabric via successively coating with polydopamine (PDA), polyaniline (PANI), polypyrrole (PPy), and polydimethylsiloxane (PDMS) through in-situ polymerization and dip-coating, which could be used for strain sensor and wearable heater both in air and underwater. The obtained sample exhibited a fast electrical response in 500 ms and could withstand 10,000 times stretching-releasing cycles, additionally, the sample exhibited satisfactory electro-thermal and photo-thermal performances. As a whole, the multifunctional fabric-based devices with excellent performances show great potential to be applied in medical monitoring and personal care, especially for aged and disabled persons.

Key words: Strain sensor, Superhydrophobic, Thermal management, Photo-thermal device