Preparation of Fully Bio-based Sound Absorbers from Waste Wood and Pulp Fibers by Foam Forming

dc.contributorAalto Universityen
dc.contributor.authorValkonen, Mikkoen_US
dc.contributor.authorCucharero Moya, Joseen_US
dc.contributor.authorLokki, Tapioen_US
dc.contributor.authorRautkari, Laurien_US
dc.contributor.authorHänninen, Tuomasen_US
dc.contributor.departmentDepartment of Bioproducts and Biosystemsen
dc.contributor.departmentDepartment of Information and Communications Engineeringen
dc.contributor.groupauthorWood Material Scienceen
dc.contributor.groupauthorVirtual Acousticsen
dc.contributor.groupauthorLokki Tapio groupen
dc.description.abstractBuilding materials that are bio-based and produced from waste streams have a substantial effect on the carbon footprint of buildings. In this study, the authors prepared fully bio-based sound absorbers from waste wood and other cellulosic materials. Cutter shavings (CSs), softwood pulp, and cellulose powder (CP) were used as raw materials to prepare sound absorber samples using the foam-forming technique. The fully bio-based sound absorbers prepared were mechanically stable. However, an increase in CSs content decreased their mechanical properties, and samples with high CSs content became difficult to handle. The CP increased the mechanical properties, but it did not affect the sound absorption of the samples. The sound absorption properties of these fully bio-based materials could be tuned by carefully selecting CSs and fiber contents and adjusting the thickness of the material. Greater CSs content decreased the sound absorption properties of the materials. This decrease was mainly due to an increase in the average pore size, leading to poorer sound energy dissipation by visco-thermal effects.en
dc.description.versionPeer revieweden
dc.identifier.citationValkonen, M, Cucharero Moya, J, Lokki, T, Rautkari, L & Hänninen, T 2023, ' Preparation of Fully Bio-based Sound Absorbers from Waste Wood and Pulp Fibers by Foam Forming ', BioResources, vol. 18, no. 2, pp. 2657-2669 .
dc.identifier.otherPURE UUID: bd5399ca-5a85-4781-8ce2-ba2ed935ebafen_US
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dc.publisherNorth Carolina State University
dc.relation.ispartofseriesVolume 18, issue 2en
dc.subject.keywordSound absorptionen_US
dc.subject.keywordFoam formingen_US
dc.subject.keywordCutter shavingsen_US
dc.subject.keywordSoftwood pulpen_US
dc.subject.keywordCellulose powderen_US
dc.subject.keywordMechanical propertiesen_US
dc.titlePreparation of Fully Bio-based Sound Absorbers from Waste Wood and Pulp Fibers by Foam Formingen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi