Scholarlink

<p>Hemicellulose-based hydrogels have attracted significant attention due to their inherent renewability, and tunable physicochemical properties. Overcoming their intrinsic mechanical weakness remains a persistent challenge. Here we present a robust and stretchable microgel-reinforced hemicellulose hydrogel made by embedding rigid chitosan microspheres (CMs) in the flexible hydrogel matrix formed by copolymerization of methacrylated hemicellulose and acrylamide. The compressive strength of the hydrogel achieves 3.52&#xa0;MPa under a strain of 90%, which is 2.7&#xa0;times that of the hydrogel without CMs. Meanwhile, the tensile strength reaches 44.09&#xa0;kPa, with a strain of 413%. The toughness of the hydrogel is 91.1&#xa0;kJ&#xa0;m<sup>−3</sup>, nearly twice that of the hydrogel without CMs. Further incorporation of MXene endows the hydrogel with excellent electrical conductivity (0.56&#xa0;S&#xa0;m<sup>−1</sup>), enabling pressure detection as low as 0.16&#xa0;kPa, which makes it suitable for use as a sensor for real-time monitoring of physiological signals and human motion.</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

Chitosan microgel-reinforced hemicellulose-based hydrogels with high compressive strength for pressure sensor

  • 期刊论文

  • 发表日期：

    2026年4月9日

查看全文
  • Heli Cheng,
  • Zejiang Guo,
  • Bingzhe Chen,
  • Jiansheng Gong,
  • Qipeng Luo,
  • Xin Chen,
  • Peng Wang,
  • Jungang Jiang

摘要

Hemicellulose-based hydrogels have attracted significant attention due to their inherent renewability, and tunable physicochemical properties. Overcoming their intrinsic mechanical weakness remains a persistent challenge. Here we present a robust and stretchable microgel-reinforced hemicellulose hydrogel made by embedding rigid chitosan microspheres (CMs) in the flexible hydrogel matrix formed by copolymerization of methacrylated hemicellulose and acrylamide. The compressive strength of the hydrogel achieves 3.52 MPa under a strain of 90%, which is 2.7 times that of the hydrogel without CMs. Meanwhile, the tensile strength reaches 44.09 kPa, with a strain of 413%. The toughness of the hydrogel is 91.1 kJ m−3, nearly twice that of the hydrogel without CMs. Further incorporation of MXene endows the hydrogel with excellent electrical conductivity (0.56 S m−1), enabling pressure detection as low as 0.16 kPa, which makes it suitable for use as a sensor for real-time monitoring of physiological signals and human motion.