Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects
In the search for sustainable and environmentally friendly alternatives for building insulation materials, biocomposites of sheep wool embedded in a polymer matrix were prepared by freeze-drying, combining soy protein with 7, 10, 15 and 20 wt % sheep wool. In addition, in order to protect these bioc...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Developments in the Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165925000080 |
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| author | Marta Urdanpilleta Itsaso Leceta Alexander Martín-Garín José Antonio Millán-García Pedro Guerrero Koro de la Caba |
| author_facet | Marta Urdanpilleta Itsaso Leceta Alexander Martín-Garín José Antonio Millán-García Pedro Guerrero Koro de la Caba |
| author_sort | Marta Urdanpilleta |
| collection | DOAJ |
| description | In the search for sustainable and environmentally friendly alternatives for building insulation materials, biocomposites of sheep wool embedded in a polymer matrix were prepared by freeze-drying, combining soy protein with 7, 10, 15 and 20 wt % sheep wool. In addition, in order to protect these biocomposites against insects, coffee grounds were incorporated into the formulation. Thermal conductivity characterization revealed values in the order of other natural insulating materials. Additionally, coefficients of absorption at normal incidence, with values up to 0.96, showed a competitive performance of the biocomposites, in the same line of the samples without coffee grounds. Furthermore, the test of resistance against insects, with 2B classification according to ISO 3998, showed a good protection against keratophagous insects, especially against carpet beetle (Anthrenus flavipies). Consequently, biocomposites with an entirely renewable and eco-friendly composition, which valorize biowaste from different sources, were found to be functional as thermal and acoustic insulators towards more sustainable materials in the building sector. |
| format | Article |
| id | doaj-art-302a0f61e0dd472ca5d97be8f5874aad |
| institution | Kabale University |
| issn | 2666-1659 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj-art-302a0f61e0dd472ca5d97be8f5874aad2025-08-20T03:42:57ZengElsevierDevelopments in the Built Environment2666-16592025-03-012110060810.1016/j.dibe.2025.100608Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insectsMarta Urdanpilleta0Itsaso Leceta1Alexander Martín-Garín2José Antonio Millán-García3Pedro Guerrero4Koro de la Caba5BIOMAT Research Group, University of the Basque Country (UPV/EHU) Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018, Donostia-San Sebastián, SpainBIOMAT Research Group, University of the Basque Country (UPV/EHU) Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018, Donostia-San Sebastián, SpainTICBE Research Group, Department of Architecture, Faculty of Engineering of Gipuzkoa, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018, Donostia-San Sebastián, SpainENEDI Research Group, Department of Thermal Engineering, Faculty of Engineering of Gipuzkoa, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018, Donostia-San Sebastián, SpainBIOMAT Research Group, University of the Basque Country (UPV/EHU) Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018, Donostia-San Sebastián, Spain; BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Corresponding author. BIOMAT Research Group, University of the Basque Country (UPV/EHU) Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018, Donostia-San Sebastián, Spain.BIOMAT Research Group, University of the Basque Country (UPV/EHU) Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018, Donostia-San Sebastián, Spain; BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Corresponding author. BIOMAT Research Group, University of the Basque Country (UPV/EHU) Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018, Donostia-San Sebastián, Spain.In the search for sustainable and environmentally friendly alternatives for building insulation materials, biocomposites of sheep wool embedded in a polymer matrix were prepared by freeze-drying, combining soy protein with 7, 10, 15 and 20 wt % sheep wool. In addition, in order to protect these biocomposites against insects, coffee grounds were incorporated into the formulation. Thermal conductivity characterization revealed values in the order of other natural insulating materials. Additionally, coefficients of absorption at normal incidence, with values up to 0.96, showed a competitive performance of the biocomposites, in the same line of the samples without coffee grounds. Furthermore, the test of resistance against insects, with 2B classification according to ISO 3998, showed a good protection against keratophagous insects, especially against carpet beetle (Anthrenus flavipies). Consequently, biocomposites with an entirely renewable and eco-friendly composition, which valorize biowaste from different sources, were found to be functional as thermal and acoustic insulators towards more sustainable materials in the building sector.http://www.sciencedirect.com/science/article/pii/S2666165925000080BiocompositesSoy proteinSheep woolSound absorptionResistance against insects |
| spellingShingle | Marta Urdanpilleta Itsaso Leceta Alexander Martín-Garín José Antonio Millán-García Pedro Guerrero Koro de la Caba Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects Developments in the Built Environment Biocomposites Soy protein Sheep wool Sound absorption Resistance against insects |
| title | Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects |
| title_full | Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects |
| title_fullStr | Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects |
| title_full_unstemmed | Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects |
| title_short | Valorized sheep wool biocomposites towards a more sustainable building sector: Thermal insulation, sound absorption, and resistance against insects |
| title_sort | valorized sheep wool biocomposites towards a more sustainable building sector thermal insulation sound absorption and resistance against insects |
| topic | Biocomposites Soy protein Sheep wool Sound absorption Resistance against insects |
| url | http://www.sciencedirect.com/science/article/pii/S2666165925000080 |
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