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<p>Controlling the surface functionality while preserving the structural and mechanical integrity of polymer porous materials (PPMs) is essential for their practical applications. This study demonstrates an optimized approach to enhance the surface functionality of heat-resistant porous polyimide/copper mesh hybrid (<i>p-</i>PI/Cu-mesh) through systematic alkaline hydrolysis treatments. Gas-phase alkaline treatment emerged as the most effective method, achieving superior modification efficiency and hydrophilicity validated by infrared spectroscopy (IR) and water contact angle (WCA) measurements while maintaining the hybrid's mechanical integrity and porous architecture. Compared to solution-phase treatments, the gas-phase approach reduced WCA by 1.7 times without compromising structural stability. Furthermore, the functionalized hybrids exhibited significantly improved triboelectric performance, with a 42% increase in open-circuit voltage (<i>V</i><sub>OC</sub>) in triboelectric nanogenerator (TENG) devices. These findings highlight the potential of the functionalized <i>p-</i>PI/Cu-mesh hybrids for diverse applications, including self-powered sensors and energy harvesting systems in extreme conditions.&#xa0;</p> Graphical Abstract <p></p>

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Enhancing polyimide hybrid functionality through optimized alkaline hydrolysis modification

  • 期刊论文

  • 发表日期：

    2025年4月3日

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  • Gia Huy Tran,
  • Quang Binh Nguyen,
  • Chanh Truc Trinh,
  • Quang Ha Dang,
  • Tuyen Bui Thi Kim,
  • Xuan Huy Do,
  • Van-Tien Bui

摘要

Controlling the surface functionality while preserving the structural and mechanical integrity of polymer porous materials (PPMs) is essential for their practical applications. This study demonstrates an optimized approach to enhance the surface functionality of heat-resistant porous polyimide/copper mesh hybrid (p-PI/Cu-mesh) through systematic alkaline hydrolysis treatments. Gas-phase alkaline treatment emerged as the most effective method, achieving superior modification efficiency and hydrophilicity validated by infrared spectroscopy (IR) and water contact angle (WCA) measurements while maintaining the hybrid's mechanical integrity and porous architecture. Compared to solution-phase treatments, the gas-phase approach reduced WCA by 1.7 times without compromising structural stability. Furthermore, the functionalized hybrids exhibited significantly improved triboelectric performance, with a 42% increase in open-circuit voltage (VOC) in triboelectric nanogenerator (TENG) devices. These findings highlight the potential of the functionalized p-PI/Cu-mesh hybrids for diverse applications, including self-powered sensors and energy harvesting systems in extreme conditions. 

Graphical Abstract