Structure and properties of graphene oxide/cellulose hybrid fibers via divalent metal ions treatment
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Cellulose hybrid fibers (CeHFs), hybridized via graphene oxide (GO) and metal ions (Ca2+), are synthesized by dry-jet wet spinning. The synthesized GO–Ca2+-CeHFs exhibit the tensile strength and the breaking elongation of 551 ± 37.5 MPa and 5.9 ± 0.4%, respectively, while the GO/cellulose composite fibers (GO–CeFs) show the tensile strength of 403 ± 76.0 MPa and the elongation of 4.5 ± 0.5%; thus, the GO–Ca2+–CeHFs demonstrate improved mechanical properties over GO–CeFs by 37 and 31% in terms of tensile strength and elongation, respectively. These results are attributed to the metal ions that form a good interfacial interaction between the functional groups of cellulose and GO. In addition, the tensile strength of GO–Ba2+–CeHFs is as high as 580 ± 25 MPa, which is induced by the difference in the ionic radius. Therefore, the high mechanical properties of the synthesized cellulose-based fibers have the potential to be used as sustainable alternative to the synthetic fibers used in the industrial applications.
KeywordsNano hybrid materials Cellulose fibers Graphene oxide Metal ion Mechanical properties
This research was supported by Nano·Material Technology Development Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT and Future Planning (NRF-2016M3A7B4900135).
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