Journal
CELLULOSE
Volume 30, Issue 7, Pages 4561-4574Publisher
SPRINGER
DOI: 10.1007/s10570-023-05079-x
Keywords
Conductive; Membranes; Cellulose; Graphene oxide; Silane crosslinking; Characterization
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In this study, cellulose and graphene oxide (GO) were crosslinked together using a simple and environmentally friendly silane crosslinking method, forming a cellulose/GO hybrid membrane. The hybrid membrane exhibited good thermal stability, strong hydrophobicity, self-cleaning properties, controllable Joule heating capability, extremely fast thermal response, and good electrothermal stability. It showed great potential in future multi-functional electronic products such as electric heating electronic devices, sensors, and smart clothing.
The development of environmentally friendly, multifunctional conductive membranes is an ideal candidate for future new electronic components. Some cellulose-based electronic sensors have been studied, such as pressure sensors, hydrothermal sensors, flexible sensors, optoelectronic devices, and electrochemical energy storage, etc. However, there are very few studies on cellulose-based conductive materials in Joule heating. In this study, we adopted a simple and environmentally friendly silane crosslinking method to crosslink cellulose and graphene oxide (GO) together. The cellulose/GO hybrid membrane were characterized by FTIR, Raman, SEM, AFM, TGA, surface wettability, self-cleaning, surface resistance, Joule heating and other tests. Results showed that the covalent bond between cellulose and GO was formed by vinyltrimethoxysilane (VTMS), and GO was successfully cross-linked on the surface of the cellulose membrane. The cellulose/GO hybrid membrane has good thermal stability, strong hydrophobicity and self-cleaning properties. When the GO concentration was 3 w/w%, the Young's modulus of the film reached the maximum (47.38% higher than that of the original sample). In addition, it also exhibited extremely low surface resistivity (720.69 omega), controllable Joule heating capability, extremely fast thermal response (heating process and cooling process within 5 s) and good electrothermal stability. It showed great potential in multi-functional electronic products such as electric heating electronic devices, electric heating sensors, and smart clothing in the future.
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