Conductive and adhesive gluten ionic skin for eco-friendly strain sensor

Modified biomaterials combine the excellent properties of electric conductivity, mechanical strength, flexibility, adherence, biocompatibility and degradability, thus promising as flexible on-skin devices. Herein, an ionic conductive gluten ( i -Gluten) was fabricated with the assistance of glycerol...

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Bibliographic Details
Published in:Journal of materials science 2021-02, Vol.56 (5), p.3970-3980
Main Authors: Han, Xiangsheng, Lu, Wenyu, Yu, Wenfan, Xu, Hang, Bi, Shuyan, Cai, Hongzhen
Format: Article
Language:English
Subjects:
Adhesives
Biocompatibility
Biological products
Biomedical materials
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Electric properties
Electrical conductivity
Electrical resistivity
Elongation
Gluten
Glycerin
Glycerol
Materials for Life Sciences
Materials Science
Motion stability
Peptides
Polymer Sciences
Sensors
Skin
Solid Mechanics
Strain
Wearable technology
Wrist
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Summary:Modified biomaterials combine the excellent properties of electric conductivity, mechanical strength, flexibility, adherence, biocompatibility and degradability, thus promising as flexible on-skin devices. Herein, an ionic conductive gluten ( i -Gluten) was fabricated with the assistance of glycerol and ions. Owing to the strong interactions among glycerol, ions and the peptide chains in gluten, the resultant i -Gluten was conductive, mechanically strong and flexible (strength of ~ 150 kPa and elongation of ~ 600%), sticky, recoverable, biocompatible and degradable. Due to their tight adhesion on human skins and response of conductivity to shape deformation, the i -Gluten was capable of sensing both large-scale (finger, wrist and elbow bending) and subtle human motions (blow, frown and swallow), showing high sensibility and stability (> 3000 cycles). These conductive glutens pave a simple and green way of constructing high-performance and eco-friendly biomaterials applicable for diverse wearable devices. Graphical abstract
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-020-05508-3