Graphene oxide-based lamella network for enhanced sound absorption

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dc.contributor.authorNine, M.J.
dc.contributor.authorAyub, M.
dc.contributor.authorZander, A.C.
dc.contributor.authorTran, D.
dc.contributor.authorCazzolato, B.S.
dc.contributor.authorLosic, D.
dc.date.issued2017
dc.descriptionPublished online October 23, 2017
dc.description.abstractNoise is an environmental pollutant with recognized impacts on the psychological and physiological health of humans. Many porous materials are often limited by low sound absorption over a broad frequency range, delicacy, excessive weight and thickness, poor moisture insulation, high temperature instability, and lack of readiness for high volume commercialization. Herein, an efficient and robust lamella-structure is reported as an acoustic absorber based on self-assembled interconnected graphene oxide (GO) sheets supported by a grill-shaped melamine skeleton. The fabricated lamella structure exhibits ≈60.3% enhancement over a broad absorption band between 128 and 4000 Hz (≈100% at lower frequencies) compared to the melamine foam. The enhanced acoustic absorption is identified to be structure dependent regardless of the density. The sound dissipation in the open-celled structure is due to the viscous and thermal losses, whereas it is predominantly tortuosity in wave propagation and enhanced surface area for the GO-based lamella. In addition to the enhanced acoustic absorption and mechanical robustness, the lamella provides superior structural functionality over many conventional sound absorbers including, moisture/mist insulation and fire retardancy. The fabrication of this new sound absorber is inexpensive, scalable and can be adapted for extensive applications in commercial, residential, and industrial building structures.
dc.description.statementofresponsibilityMd Julker Nine, Md Ayub, Anthony C. Zander, Diana N. H. Tran, Benjamin S. Cazzolato and Dusan Losic
dc.identifier.citationAdvanced Functional Materials, 2017; 27(46):1703820--1703820-10
dc.identifier.doi10.1002/adfm.201703820
dc.identifier.issn1616-3028
dc.identifier.issn1616-3028
dc.identifier.orcidNine, M.J. [0000-0002-5740-8627]
dc.identifier.orcidAyub, M. [0000-0002-3778-5660]
dc.identifier.orcidZander, A.C. [0000-0003-4099-8146]
dc.identifier.orcidTran, D. [0000-0002-4023-3373]
dc.identifier.orcidCazzolato, B.S. [0000-0003-2308-799X]
dc.identifier.orcidLosic, D. [0000-0002-1930-072X]
dc.identifier.urihttp://hdl.handle.net/2440/109771
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/IH150100003
dc.relation.granthttp://purl.org/au-research/grants/arc/DP130102832
dc.rights© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
dc.source.urihttps://doi.org/10.1002/adfm.201703820
dc.subjectAcoustic absorption; fire-retardant; graphene oxide; lamella; moisture insulation
dc.titleGraphene oxide-based lamella network for enhanced sound absorption
dc.typeJournal article
pubs.publication-statusPublished

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