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Enhanced mechanical properties of melamine-functionalized boron nitride nanosheets reinforced with epoxy nanocomposites for dental applications

  • Innovation in Materials Processing
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Abstract

Non-covalently functionalized boron nitride nanoplatelets (BNNPs) were mixed with the epoxy resin and fabricated into nanocomposites. The BNNPs were non-covalently functionalized with melamine to enhance dispersion and matrix interfacial bond strength with the matrix. Melamine-functionalized BNNPs (M-BNNPs) were simultaneously synthesized and functionalized via modified mechanical exfoliation process. The mechanical properties of M-BNNP-reinforced epoxy (M-BNNP/epoxy) nanocomposites included marked strengthening effects (84.3% in terms of Young’s modulus, 29.1% in terms of universal test strength, and 134% in terms of fracture toughness) after adding only 2 wt% M-BNNPs to the epoxy matrix. The experimental Young’s modulus were compared to those of the Halpin–Tsai model. Our materials exhibited much great fracture toughness than commercial dental resins, suggesting that the M-BNN/epoxy resins may find dental applications.

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Acknowledgements

This work was supported by the National Research Foundation of Korean (NRF) grant funded by the Korea government (Ministry of Science and ICT) (2021R1F1A1058854) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE, 20217510100020, Development of platform process using common core and materialization technology for rare metal recovery from industrial low-grade waste liquid).

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  1. Sung Chan Yoo and Joonhui Kim have contributed equally to the work as co-first authors.

Authors and Affiliations

  1. Nuclear Fuel Safety Research Division, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989 beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea

    Sung Chan Yoo

  2. Center for R&D Performance Diffusion, Korea Institute of Science and Technology Evaluation and Planning (KISTEP), Eumseong-gun, Chungcheongbuk-do, 27740, Republic of Korea

    Joonhui Kim

  3. Department of Urban, Energy, and Environmental Engineering, Chungbuk National University, Chungdae-ro 1, Seowon-Gu, Cheongju, Chungbuk, 28644, Republic of Korea

    Seulgi Kim & Dongju Lee

  4. Department of Advanced Materials Engineering, Chungbuk National University, Chungdae-ro 1, Seowon-Gu, Cheongju, Chungbuk, 28644, Republic of Korea

    Dongju Lee

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Yoo, S.C., Kim, J., Kim, S. et al. Enhanced mechanical properties of melamine-functionalized boron nitride nanosheets reinforced with epoxy nanocomposites for dental applications. J Mater Sci 57, 18205–18219 (2022). https://doi.org/10.1007/s10853-022-07702-x

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