Journal
POLYMERS
Volume 11, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/polym11111774
Keywords
silk fibroin; graphene; flexibility; electrically conductive; humidity sensitive
Categories
Funding
- National Natural Science Foundation of China [51973144, 51741301]
- Nature Science Foundation of Jiangsu, China [BK20171239]
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions for Textile Engineering in Soochow University
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Silk fibroin (SF) is a natural material with good biocompatibility and excellent mechanical properties, which are complementary to graphene with ultrahigh electrical conductivity. In this study, to maximally combine graphene and silk fibroin, a well-dispersed silk fibroin/graphene suspension was successfully prepared in a simple and effective way. Then we prepared a flexible conductive SF/graphene film with a minimum resistance of 72.1 +/- 4.7 ohm/sq by the casting method. It was found that the electrical conductivity of the SF/graphene film was related to the water content of the film, and the variation was more than 200 times. Therefore, it will play an important role in the field of humidity sensors. It also has excellent mechanical properties in both wet and dry states. These unique features make this material a promising future in the fields of biomedical applications, wearable sensors, and implantable internal sensors.
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