Products Cited in Publications Worldwide High-Performance Conductive and Antibacterial Zwitterionic Hydrogel for the Design of Flexible Motion Sensor

High-Performance Conductive and Antibacterial Zwitterionic Hydrogel for the Design of Flexible Motion Sensor

Zou, Xinhao; Mei, Lin; Liu, Qian; Fang, Xue; Wang, Dingxin; Zhao, Panfeng; Ding, Weiping; Luo, Tianzhi

DOI:

Abstract

To address the challenge of optimizing biocompatibility, mechanical robustness, and antibacterial efficacy in flexible electronic skin materials, a high-performance conductive and antibacterial zwitterionic hydrogel (ASCC) was developed utilizing sulfobetaine methacrylate (SBMA) and carboxymethyl chitosan (CMCS). By copolymerizing SBMA with acrylamide (AAm) to form dynamic ionic channels and integrating CMCS-driven multiple physical crosslinking networks (including hydrogen bonds, electrostatic interactions, and hydrophobic effects), the hydrogel demonstrated remarkable mechanical properties—namely a maximum tensile strain of 1113.44% and toughness of 741.02 kJ·m-3. It also exhibited high ionic conductivity (1.48 S/m) and sustained stability, maintaining performance after 3000 cycles. Exploiting the bioinert nature of SBMA alongside the antimicrobial properties of CMCS, the ASCC hydrogel showed exceptional biocompatibility (cell viability exceeding 90%) and broad-spectrum antibacterial efficacy (over 93% inhibition against E. coli and B. subtilis). Moreover, its significant transparency (>90% visible-light transmittance) and rapid response capability (50 ms response time) facilitated real-time monitoring of multiscale human movements, such as joint bending, vocalization, and facial micro-expressions, while sustaining a stable linear resistance-strain relationship (gauge factor GF=5.11). This study introduces an innovative strategy for designing flexible electronic skins with integrated biosafety, mechanical durability, and multifunctional sensing capabilities.

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SPE

A5311373637-26-198%

SPE

47.0/100g

Detail