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<p>This work developed a conductive sandwich structure film with high tensile strength, high elasticity (over 2200% without fracture), and cost-competitive by spraying and ultraviolet irradiation. Epoxidized natural rubber (ENR) latex with polyacrylamide (PAM) as the reinforcing phase and Ti3C2Tx (MXene) with ENR&#xa0;are sprayed on the glass substrate layer by layer, respectively. This design strategy provides a highly conductive network internally while Maintaining the structural integrity and abrasion resistance of the surface. The flexible conductive film is favorable as a strain sensor to monitor human activities and write letters, which shows good reproducibility and reliability. Based on the excellent response to the changes in temperature, the sandwich structure film can be used as a thermistor for practical applications, with high a sensitivity of 2.34%/°C at −12.4 to 90&#xa0;°C. Additionally, the sandwich structure film can be utilized as a strain sensor, demonstrating improved flexibility (510&#xa0;kPa, 2200% strain) and gauge factor (2.47). This research has the potential to provide valuable insights into the development of multifunctional flexible electronic devices.</p>

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A flexible film based on sandwich structure (ENR–PAM/ENR–MXene/ENR–PAM) for strain and temperature sensor

  • 期刊论文

  • 发表日期：

    2025年9月12日

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  • Hongda Ding,
  • Xiande Shen

摘要

This work developed a conductive sandwich structure film with high tensile strength, high elasticity (over 2200% without fracture), and cost-competitive by spraying and ultraviolet irradiation. Epoxidized natural rubber (ENR) latex with polyacrylamide (PAM) as the reinforcing phase and Ti3C2Tx (MXene) with ENR are sprayed on the glass substrate layer by layer, respectively. This design strategy provides a highly conductive network internally while Maintaining the structural integrity and abrasion resistance of the surface. The flexible conductive film is favorable as a strain sensor to monitor human activities and write letters, which shows good reproducibility and reliability. Based on the excellent response to the changes in temperature, the sandwich structure film can be used as a thermistor for practical applications, with high a sensitivity of 2.34%/°C at −12.4 to 90 °C. Additionally, the sandwich structure film can be utilized as a strain sensor, demonstrating improved flexibility (510 kPa, 2200% strain) and gauge factor (2.47). This research has the potential to provide valuable insights into the development of multifunctional flexible electronic devices.