journal article·2022-05-18Open access

Sweat-Resistant Silk Fibroin-Based Double Network Hydrogel Adhesives

Jilei Wang, Nan Zhang, Yurong Tan, Fanfan Fu, Gengxin Liu, Yin Fang, Xin-xing Zhang, Minsu Liu, Yuan Cheng, Jing Yu

ACS Applied Materials & Interfaces· Volume 14· Issue 19

Abstract

The adhesion between flexible epidermal sensors and human skin is essential for maintaining the stable functionality of the sensors. However, it is still challenging for epidermal electronic devices to achieve durable adhesion to the surface of the skin, especially under sweaty or humid conditions. Here, we report a silk fibroin-polyacrylamide (SF-PAAm) double network (DN) hydrogel adhesive with excellent biocompatibility, strong and durable adhesion on wet surfaces, and tunable adhesive properties. The hydrophilic PAAm network greatly improves the water retention capability of the DN hydrogel and reduces the β-sheet crystalline content of SF, leading to excellent adhesive properties of the hydrogel across a wide range of humidity. The SF-PAAm DN hydrogel adhesive can be readily integrated with different epidermal sensor arrays and performs very well in real-time on-body sweat sensing. The SF-PAAm DN hydrogels have great potential for application in various epidermal healthcare sensors as well as medical adhesives for other medical applications.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Silk-based biomaterials and applications · Polydiacetylene-based materials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore

School of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, 710054 Xi’an, China

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China

School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore

School of Physics, Dalian University of Technology, Dalian 116024, China

Monash Suzhou Research Institute, Monash University, Suzhou Industrial Park, Suzhou 215000, China

Department of Materials Science and Engineering, Monash University, Melbourne, Victoria3800, Australia

Funding

Central University Basic Research Fund of China · National Research Foundation Singapore · Science and Engineering Research Council

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