Glycerol-Crosslinked Chitosan/Polyvinyl Alcohol/Polyaniline Conductive Hydrogel for Wearable Strain Sensors with High Sensitivity and Environmental Durability

Chengcheng Yang; Xue Bai; Jifeng Zhang

doi:10.6919/ICJE.202505_11(5).0003

Authors

Chengcheng Yang
Xue Bai
Jifeng Zhang

DOI:

https://doi.org/10.6919/ICJE.202505_11(5).0003

Keywords:

Natural Polysaccharide Hydrogel; Conductive Hydrogel; Flexible Sensor.

Abstract

In this chapter, a PANI/CS/PVA/GL composite conductive hydrogel with excellent mechanical properties, electrical conductivity, and environmental stability was successfully prepared by incorporating conductive polyaniline (PANI) into the chitosan (CS)/polyvinyl alcohol (PVA) hydrogel system, along with the plasticizing and anti-freezing effects of glycerol (GL). Fourier transform infrared spectroscopy (FTIR) analyses confirmed the hydrogen bonding interactions among PANI, CS, and PVA, as well as the successful introduction of PANI. The experimental results demonstrated that the incorporation of PANI not only enhanced the mechanical properties of the hydrogel but also endowed the composite hydrogel with outstanding electrical conductivity. Additionally, the inclusion of glycerol imparted excellent freeze resistance and dehydration resistance to the hydrogel, enabling it to maintain stable mechanical and electrical performance even under extreme environmental conditions.

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