New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea Bags
This study utilizes waste wheat straw fibers and discarded tea bags as novel raw materials for developing new thermal insulation and sound absorption composites. Wood adhesive (WA) is used to bind the polymer raw materials. Loose polymers and different composites are experimentally developed in diff...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/14/2402 |
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| author | Mohamed Ali Redhwan Almuzaiqer Hassan Alshehri Mohammed A. Alanazi Turki Almudhhi Abdullah Nuhait |
| author_facet | Mohamed Ali Redhwan Almuzaiqer Hassan Alshehri Mohammed A. Alanazi Turki Almudhhi Abdullah Nuhait |
| author_sort | Mohamed Ali |
| collection | DOAJ |
| description | This study utilizes waste wheat straw fibers and discarded tea bags as novel raw materials for developing new thermal insulation and sound absorption composites. Wood adhesive (WA) is used to bind the polymer raw materials. Loose polymers and different composites are experimentally developed in different concentrations. Sound absorption and thermal conductivity coefficients are obtained for the developed boards. Bending moment analysis and the moisture content of the boards are reported in addition to a microstructure analysis of the straw fibers from wheat. The results indicate that as the wheat straw fiber’s percentage increases in the composite, the thermal conductivity coefficient decreases, the flexure modulus decreases, the sound absorption coefficient increases at some frequencies, and the moisture content increases. The range of thermal conductivity and the noise reduction coefficient are 0.042–0.073 W/m K and 0.35–0.6 at 24 °C for the polymer raw materials, respectively. The corresponding values for the composites are 0.054 and 0.0575 W/m K and 0.45–0.5, respectively. The maximum moisture content percentages for the polymers and composites are 6.5 and 1.15, respectively. The composite flexure modulus reaches maximum and minimum values of 4.59 MPa and 2.22 MPa, respectively. These promising results promote these polymer and composite sample boards as more convenient insulation materials for green buildings and could replace the conventional petrochemical thermal insulation ones. |
| format | Article |
| id | doaj-art-8533251f5d204ecbb41b49294b67c1c4 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-8533251f5d204ecbb41b49294b67c1c42025-08-20T03:36:19ZengMDPI AGBuildings2075-53092025-07-011514240210.3390/buildings15142402New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea BagsMohamed Ali0Redhwan Almuzaiqer1Hassan Alshehri2Mohammed A. Alanazi3Turki Almudhhi4Abdullah Nuhait5Mechanical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaMechanical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaMechanical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaMechanical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaMechanical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaMechanical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaThis study utilizes waste wheat straw fibers and discarded tea bags as novel raw materials for developing new thermal insulation and sound absorption composites. Wood adhesive (WA) is used to bind the polymer raw materials. Loose polymers and different composites are experimentally developed in different concentrations. Sound absorption and thermal conductivity coefficients are obtained for the developed boards. Bending moment analysis and the moisture content of the boards are reported in addition to a microstructure analysis of the straw fibers from wheat. The results indicate that as the wheat straw fiber’s percentage increases in the composite, the thermal conductivity coefficient decreases, the flexure modulus decreases, the sound absorption coefficient increases at some frequencies, and the moisture content increases. The range of thermal conductivity and the noise reduction coefficient are 0.042–0.073 W/m K and 0.35–0.6 at 24 °C for the polymer raw materials, respectively. The corresponding values for the composites are 0.054 and 0.0575 W/m K and 0.45–0.5, respectively. The maximum moisture content percentages for the polymers and composites are 6.5 and 1.15, respectively. The composite flexure modulus reaches maximum and minimum values of 4.59 MPa and 2.22 MPa, respectively. These promising results promote these polymer and composite sample boards as more convenient insulation materials for green buildings and could replace the conventional petrochemical thermal insulation ones.https://www.mdpi.com/2075-5309/15/14/2402agro-waste utilizationwheat straw fiberstea bagseco-friendly insulationsacoustic analysisbending moment |
| spellingShingle | Mohamed Ali Redhwan Almuzaiqer Hassan Alshehri Mohammed A. Alanazi Turki Almudhhi Abdullah Nuhait New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea Bags Buildings agro-waste utilization wheat straw fibers tea bags eco-friendly insulations acoustic analysis bending moment |
| title | New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea Bags |
| title_full | New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea Bags |
| title_fullStr | New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea Bags |
| title_full_unstemmed | New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea Bags |
| title_short | New Bound and Hybrid Composite Insulation Materials from Waste Wheat Straw Fibers and Discarded Tea Bags |
| title_sort | new bound and hybrid composite insulation materials from waste wheat straw fibers and discarded tea bags |
| topic | agro-waste utilization wheat straw fibers tea bags eco-friendly insulations acoustic analysis bending moment |
| url | https://www.mdpi.com/2075-5309/15/14/2402 |
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