Highly stretchable, adhesive and antibacterial double-network hydrogels toward flexible strain sensor

Ying Chen; Xiaokun Fan; Xin Liu; Cong Meng; Jingjing Rong; Xiang Lu; Jin Chen; Yi Chen

Polymer Testing (Jul 2023)

Highly stretchable, adhesive and antibacterial double-network hydrogels toward flexible strain sensor

Ying Chen,
Xiaokun Fan,
Xin Liu,
Cong Meng,
Jingjing Rong,
Xiang Lu,
Jin Chen,
Yi Chen

Affiliations

Ying Chen: College of Civil Engineering, Hunan University of Technology, Zhuzhou, Hunan, 412007, China; National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou, Hunan, 412007, China
Xiaokun Fan: National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou, Hunan, 412007, China; School of Packaging Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, 412007, China
Xin Liu: College of Civil Engineering, Hunan University of Technology, Zhuzhou, Hunan, 412007, China
Cong Meng: National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou, Hunan, 412007, China
Jingjing Rong: Department of Cardiology, Hunan Provincial People's Hospital (The Frist Affiliated Hospital of Hunan Normal University), Changsha, Hunan, 410000, China
Xiang Lu: Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan, Hubei, 430074, China
Jin Chen: Institute for Clinical Medicine, The Second Affiliated Hospital of Hainan Medical University, Hainan, 570216, China; Corresponding author. Institute for Clinical Medicine, The Second Affiliated Hospital of Hainan Medical University, China.
Yi Chen: National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou, Hunan, 412007, China; School of Packaging Materials and Engineering, Hunan University of Technology, Zhuzhou, Hunan, 412007, China; Corresponding author. Hunan University of Technology, China.

Journal volume & issue: Vol. 124
p. 108087

Abstract

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In order to solve the contradiction that the conductivity, tensile properties and antibacterial properties of traditional hydrogels cannot coexist at the same time, multifunctional CMCS/GG/PAM double-network (DN) hydrogels are prepared by introducing carboxymethyl chitosan (CMCS) into gellan gum/polyacrylamide (GG/PAM) double-network (DN) hydrogels. CMCS not only endows hydrogels with good antibacterial properties, but also enhances the interaction between GG and PAM networks. The physically crosslinked GG network and chemically crosslinked PAM network synergistically enhance the mechanical performances of the hydrogel, and the mechanical performances of hydrogel can be controlled by adjusting the dosage of GG and CMCS. The hydrogel can reach a fracture stress of 198.4 kPa and a fracture strain of 797.8%. CMCS/GG/PAM DN hydrogels have good adhesion properties, can be firmly attached to aluminum, titanium, pig skin, stainless steel and other solid surfaces. CMCS/GG/PAM DN hydrogels also have excellent biocompatibility, conductive strain sensitivity with a wide sensing range of 0–350%, short response time of 40 ms, and can monitor human movement state and facial micro-expression in real time, so as to be used as a safe antibacterial flexible sensor for human health monitoring.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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