{"title":"Polyvinyl alcohol/quaternary ammonium chitosan hydrogels with excellent conductivity, adhesion, antibacterial and biocompatibility for wearable sensors","authors":"Yanwen Xiao , Qiaoyu Huang , Yong Hu , Yige Chen , Man Zhou , Zhaoxia Chen , Xueliang Jiang , Yuhong Zhang","doi":"10.1016/j.coco.2025.102342","DOIUrl":null,"url":null,"abstract":"<div><div>Creating conductive hydrogel flexible wearable sensors with excellent conductivity, adhesion, antibacterial and biocompatibility still poses a challenge. Herein, an electrically stable multifunctional poly (vinyl alcohol)/quaternary ammonium chitosan-lithium ion conducting hydrogel (PVA/HACC-Li<sup>+</sup>) was fabricated. PVA-based hydrogels regulated by Li<sup>+</sup> and HACC have high electrical conductivity (12.35 ms/cm), high stretchability (∼372 %), excellent antibacterial properties, effectively inhibiting both Escherichia coli and Staphylococcus aureus, and very good biocompatibility (L929 cell survival rate of 108.76 %). Moreover, PVA/HACC-Li<sup>+</sup> hydrogel successfully serve as strain sensor, which can accurately identify different joint and subtle muscle movements signals of the human body with high sensitivity (GF = 2.42), wide sensing range (0–300 %) and fast response time (183 ms). Thus, this endeavor offers a feasible method for utilizing versatile multifunctional hydrogels in the field of motion monitoring and serves a practical reference for the diverse applications within wearable electronic skin.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":"56 ","pages":"Article 102342"},"PeriodicalIF":6.5000,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Communications","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2452213925000956","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
Polyvinyl alcohol/quaternary ammonium chitosan hydrogels with excellent conductivity, adhesion, antibacterial and biocompatibility for wearable sensors
Creating conductive hydrogel flexible wearable sensors with excellent conductivity, adhesion, antibacterial and biocompatibility still poses a challenge. Herein, an electrically stable multifunctional poly (vinyl alcohol)/quaternary ammonium chitosan-lithium ion conducting hydrogel (PVA/HACC-Li+) was fabricated. PVA-based hydrogels regulated by Li+ and HACC have high electrical conductivity (12.35 ms/cm), high stretchability (∼372 %), excellent antibacterial properties, effectively inhibiting both Escherichia coli and Staphylococcus aureus, and very good biocompatibility (L929 cell survival rate of 108.76 %). Moreover, PVA/HACC-Li+ hydrogel successfully serve as strain sensor, which can accurately identify different joint and subtle muscle movements signals of the human body with high sensitivity (GF = 2.42), wide sensing range (0–300 %) and fast response time (183 ms). Thus, this endeavor offers a feasible method for utilizing versatile multifunctional hydrogels in the field of motion monitoring and serves a practical reference for the diverse applications within wearable electronic skin.
期刊介绍:
Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.