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Multiscale acoustical study on graphene oxide impregnated polyurethane foam

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Abstract

This study examines the multiscale acoustic properties of sound-absorbing polyurethane (PU) foam impregnated with graphene oxide (GO). GO impregnation into the PU foam was achieved through a vacuum-assisted process. The effects of GO impregnation on the macroscopic acoustic behavior, transport parameters, and sound absorption coefficients were investigated. Scanning electron microscopy images revealed that the impregnated GO enveloped the open pores within the porous structure. Geometric parameters derived from the microstructural observations were used to perform acoustic simulations. Models with partially open cells could be used to accurately predict the transport parameters and sound absorption coefficients of foams with low levels of GO impregnation. For foams with high levels of GO impregnation, it was necessary to incorporate closed cells into the model, which significantly enhanced the prediction accuracy for the transport parameters and sound absorption coefficients. This study advances our understanding of the acoustic properties of GO-impregnated PU foams and will be beneficial for develo** more effective sound-absorbing materials.

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Acoustical characterization of graphene oxide impregnated polyurethane foam

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Acknowledgements

This research was supported by the Institute of Engineering Research at Seoul National University and a grant from Kyung Hee University in 2020 (KHU-20201096).

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Authors and Affiliations

  1. Institute of Advanced Machines and Design, School of Mechanical Engineering, Seoul National University, Seoul, Republic of Korea

    Sung Soo Yang & Yeon June Kang

  2. Department of Mechanical Engineering, Kyung Hee University, Yongin, Republic of Korea

    Inhwa Jung

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Yang, S.S., Jung, I. & Kang, Y.J. Multiscale acoustical study on graphene oxide impregnated polyurethane foam. Macromol. Res. (2024). https://doi.org/10.1007/s13233-024-00281-7

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