Structure and properties of graphene oxide/cellulose hybrid fibers via divalent metal ions treatment
- Structure and properties of graphene oxide/cellulose hybrid fibers via divalent metal ions treatment
- 조성무; 황준연; 안석훈; 류지수; 임진성; Frank K. Ko; 이중희
- graphene; Cellulose fibers; hybrid structure; TEM; Graphene oxide; Nano hybrid materials; Metal ion; Mechanical properties
- Issue Date
- VOL 25, NO 1-525
- 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.
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