Structure and properties of graphene oxide/cellulose hybrid fibers via divalent metal ions treatment

Ryu, Jisu; Lim, Jin Seong; Ahn, Seokhoon; Jo, Seong Mu; Ko, Frank; Lee, Joong Hee; Hwang, Jun Yeon

doi:10.1007/s10570-017-1535-z

Cited by 8 publications

(2 citation statements)

References 37 publications

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“…CNF is typically hydrophilic because of numerous hydroxyl groups on its surface, and GO a monolayer sheet of graphite with various functional groups with oxygen atoms such as hydroxyl, carboxyl, carbonyl, and epoxide groups. GO can be easily dispersed to form its network in the CNF matrix as significant support of the filament 16 , 17 , 38 . Thus, the CNGO filament can possess a semiconducting behavior due to the GO networks in the CNF matrix 39 , 40 .…”

Section: Resultsmentioning

confidence: 99%

“…According to previous studies for films, GO has been used to reinforce sodium carboxymethyl cellulose matrices, add sensor functionality with cellulose nanocrystals, and design flexible energy applications with regenerative cellulose 14 , 15 . Researches for filament formation have also been conducted: cellulose, GO, and barium ions were blended and achieved 580 MPa tensile strength; nanofibrillated cellulose and GO were hybridized and showed 31.6 GPa Young's modulus and 416.6 MPa tensile strength 16 , 17 . However, since their fabrication process was manually operated non-continuous that took over 48 h, it is not suitable for mass production.…”

Section: Introductionmentioning

confidence: 99%

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High-strength cellulose nanofiber/graphene oxide hybrid filament made by continuous processing and its humidity monitoring

Kim

Panicker

Kim

et al. 2021

Sci Rep

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Human-made natural-fiber-based filaments are attractive for natural fiber-reinforced polymer (NFRP) composites. However, the composites' moisture distribution is critical, and humidity monitoring in the NFRP composites is essential to secure stability and keep their life span. In this research, high strength and humidity sensing filament was developed by blending cellulose nanofiber (CNF) and graphene oxide (GO), wet-spinning, coagulating, and drying, which can overcome the heterogeneous mechanical properties between embedded-type humidity sensors and NFRP composites. The stabilized synthesis process of the CNF-GO hybrid filament demonstrated the maximum Young's modulus of 23.9 GPa and the maximum tensile strength of 439.4 MPa. Furthermore, the achieved properties were successfully transferred to a continuous fabrication process with an additional stretching process. Furthermore, its humidity sensing behavior is shown by resistivity changes in various temperature and humidity levels. Therefore, this hybrid filament has excellent potential for in-situ humidity monitoring by embedding in smart wearable devices, natural fiber-reinforced polymer composites, and environmental sensing devices.

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