Scholarlink

<p>Conductive hydrogels have demonstrated promising potential in wearable electronics and flexible sensors due to their high flexibility, stretchability, and excellent electrical conductivity. However, in practical applications, the complex and variable environmental conditions impose more stringent requirements on their conductivity, low-temperature tolerance, mechanical properties, water retention, self-healing capability, and adhesion. This work introduced the cryoprotectant glycerol (GL) and the electrolyte Zn(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub> into a sodium polyacrylate (PAAS) matrix and prepared the PAAS/GL/Zn(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub> antifreeze conductive hydrogel using a one-pot method. Experimental results showed that the synergistic effect of GL and Zn(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub> significantly enhanced the comprehensive performance of the hydrogel. When the Zn(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub> content reached 6 wt%, PAAS/GL/Zn(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub> hydrogel exhibited outstanding antifreeze properties, electrical conductivity, mechanical strength, adhesion performance, water retention, and self-healing ability. The strain sensor developed based on this hydrogel exhibited high sensitivity, along with negligible hysteresis and rapid response/recovery speeds. It not only accurately monitored human joint movements but also enabled the construction of an encrypted information transmission system.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Preparation of PAAS/GL/Zn(CF3SO3)2 antifreezing conductive hydrogel for flexible strain sensors

  • 期刊论文

  • 发表日期：

    2026年3月11日

查看全文
  • Kai Wang,
  • Jiankang Hu,
  • Mingjie Li,
  • Anxin Li,
  • Shiqiang Wang

摘要

Conductive hydrogels have demonstrated promising potential in wearable electronics and flexible sensors due to their high flexibility, stretchability, and excellent electrical conductivity. However, in practical applications, the complex and variable environmental conditions impose more stringent requirements on their conductivity, low-temperature tolerance, mechanical properties, water retention, self-healing capability, and adhesion. This work introduced the cryoprotectant glycerol (GL) and the electrolyte Zn(CF3SO3)2 into a sodium polyacrylate (PAAS) matrix and prepared the PAAS/GL/Zn(CF3SO3)2 antifreeze conductive hydrogel using a one-pot method. Experimental results showed that the synergistic effect of GL and Zn(CF3SO3)2 significantly enhanced the comprehensive performance of the hydrogel. When the Zn(CF3SO3)2 content reached 6 wt%, PAAS/GL/Zn(CF3SO3)2 hydrogel exhibited outstanding antifreeze properties, electrical conductivity, mechanical strength, adhesion performance, water retention, and self-healing ability. The strain sensor developed based on this hydrogel exhibited high sensitivity, along with negligible hysteresis and rapid response/recovery speeds. It not only accurately monitored human joint movements but also enabled the construction of an encrypted information transmission system.

Graphical abstract