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Title: Sweat-resistant silk fibroin-based double network hydrogel adhesives
Authors: Wang, Jilei
Zhang, Nan
Tan, Yurong
Fu, Fanfan
Liu, Gengxin
Fang, Yin
Zhang, Xin-Xing
Liu, Minsu
Cheng, Yuan
Yu, Jing
Keywords: Science::Biological sciences::Biochemistry
Issue Date: 2022
Source: Wang, J., Zhang, N., Tan, Y., Fu, F., Liu, G., Fang, Y., Zhang, X., Liu, M., Cheng, Y. & Yu, J. (2022). Sweat-resistant silk fibroin-based double network hydrogel adhesives. ACS Applied Materials & Interfaces, 14(19), 21945-21953.
Project: A18A1b0045 
Journal: ACS Applied Materials & Interfaces 
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 the 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 various epidermal healthcare sensors as well as medical adhesives for other medical applications.
ISSN: 1944-8244
DOI: 10.1021/acsami.2c02534
Schools: School of Materials Science and Engineering 
School of Chemical and Biomedical Engineering 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © 2022 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles
SCBE Journal Articles

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