| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Chemical Grafting of MXene onto Carbon Fiber: Interfacial Reinforcement andMechanical Performance Enhancement of Carbon Fiber/Epoxy Composites |
| YANG Zhigao, XIE Xiaolin*, JIANG Hongliu, YE Liangliang, XU Wangda
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| School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China |
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Abstract The interfacial reinforcement of carbon fiber/epoxy (CF/EP) composites through surface grafting of MXene, a novel two-dimensional nanomaterial, were investigated in this study. By immobilizing MXene at varying concentrations onto CF surfaces, the interfacial strength of composites was significantly enhanced, leading to improved mechanical performance of the composites. The surface chemical states and morphology of MXene-grafted CFs were systematically characterized, and the flexural strength and interlaminar shear strength (ILSS) of the composites were tested. Results demonstrated that the surface roughness and chemical reactivity of CFs were effectively increased because of MXene grafting. The mechanical properties of the CF/EP composites in which the CFs were treated by MXene solutions with different concentrations were improved in varying degrees, owing to the synergistic effects of mechanical interlocking and chemical bonding at the fiber-matrix interface. Among all samples, the CF/EP composite treated with 1.0 mg/mL MXene solution exhibited the optimal performance, with a bending strength of 568.13 MPa and ILSS of 55.58 MPa, representing increases of 26.04% and 38.6%, respectively, compared to the unmodified CF/EP composite.
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Received: 10 May 2026
Published:
Online: 2026-05-18
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