Scholarlink

<p>Conductive hydrogels have garnered significant attention in the field of soft electronics, particularly for wearable sensors, due to their high flexibility, biocompatibility, self-healing ability, and adjustable electrical conductivity. In this study, a new double-network hydrogel made of polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), and gum arabic (GA) was developed, with its mechanical and electrical properties enhanced by using borax as a crosslinker and copper (Cu<sup>2</sup>⁺) and iron (Fe<sup>3</sup>⁺) ions as oxidants. To impart conductivity, polyaniline (PANI) and polydopamine (PDA) were incorporated into the network. The structure and properties of the hydrogels were characterized through FTIR, FESEM, EDX, and UV–Vis analyses. Results indicated that metal ions significantly increased conductivity CH–Cu:)63 ± 0.4) × 10⁻<sup>4</sup> S/cm and CH–Fe:)29 ± 0.2) × 10⁻<sup>4</sup> S/cm, compared to CH0:)28 ± 0.12) × 10⁻<sup>4</sup> S/cm. Besides higher conductivity, the CH–Cu hydrogel exhibited a tensile strength of 18.39 ± 0.56&#xa0;kPa, rapid self-healing capability, high cytocompatibility (~ 95% cell viability at 24 h), and a gauge factor (GF = 40 at ε = 200%). These findings demonstrate that the designed hydrogels, particularly CH–Cu, are&#xa0;promising candidates for wearable and biomedical sensors that monitor subtle body movements.</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

Self-healing two-network transport hydrogel based on PANI/PDA–PVA/CMC/GA with the presence of Cu2⁺/Fe3⁺ ions: Design of a conductive and biocompatible biocomposite system for wearable sensors

  • 期刊论文

  • 发表日期：

    2026年4月9日

查看全文
  • Ghazaleh Mirzaei,
  • Keyvan Golmohammadi,
  • Akbar Mirzaei,
  • Shahrzad Javanshir

摘要

Conductive hydrogels have garnered significant attention in the field of soft electronics, particularly for wearable sensors, due to their high flexibility, biocompatibility, self-healing ability, and adjustable electrical conductivity. In this study, a new double-network hydrogel made of polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), and gum arabic (GA) was developed, with its mechanical and electrical properties enhanced by using borax as a crosslinker and copper (Cu2⁺) and iron (Fe3⁺) ions as oxidants. To impart conductivity, polyaniline (PANI) and polydopamine (PDA) were incorporated into the network. The structure and properties of the hydrogels were characterized through FTIR, FESEM, EDX, and UV–Vis analyses. Results indicated that metal ions significantly increased conductivity CH–Cu:)63 ± 0.4) × 10⁻4 S/cm and CH–Fe:)29 ± 0.2) × 10⁻4 S/cm, compared to CH0:)28 ± 0.12) × 10⁻4 S/cm. Besides higher conductivity, the CH–Cu hydrogel exhibited a tensile strength of 18.39 ± 0.56 kPa, rapid self-healing capability, high cytocompatibility (~ 95% cell viability at 24 h), and a gauge factor (GF = 40 at ε = 200%). These findings demonstrate that the designed hydrogels, particularly CH–Cu, are promising candidates for wearable and biomedical sensors that monitor subtle body movements.

Graphical Abstract