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Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers †

In recent years, the interest in reusing recycled fibers as building materials has been growing as a consequence of their ability to reduce the production of waste and the use of virgin resources, taking advantage of the potential that fibrous materials may offer to improve thermal and acoustic comf...

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Autores principales: Rubino, Chiara, Bonet Aracil, Marilés, Gisbert-Payá, Jaime, Liuzzi, Stefania, Stefanizzi, Pietro, Zamorano Cantó, Manuel, Martellotta, Francesco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926769/
https://www.ncbi.nlm.nih.gov/pubmed/31816936
http://dx.doi.org/10.3390/ma12234020
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author Rubino, Chiara
Bonet Aracil, Marilés
Gisbert-Payá, Jaime
Liuzzi, Stefania
Stefanizzi, Pietro
Zamorano Cantó, Manuel
Martellotta, Francesco
author_facet Rubino, Chiara
Bonet Aracil, Marilés
Gisbert-Payá, Jaime
Liuzzi, Stefania
Stefanizzi, Pietro
Zamorano Cantó, Manuel
Martellotta, Francesco
author_sort Rubino, Chiara
collection PubMed
description In recent years, the interest in reusing recycled fibers as building materials has been growing as a consequence of their ability to reduce the production of waste and the use of virgin resources, taking advantage of the potential that fibrous materials may offer to improve thermal and acoustic comfort. Composite panels, made of 100% wool waste fibers and bound by means of either a chitosan solution and a gum Arabic solution, were tested and characterized in terms of acoustic and non-acoustic properties. Samples with a 5 cm thickness and different density values were made to investigate the influence of flow resistivity on the final performance. Experimental results demonstrated that the samples had thermal conductivity ranging between 0.049 and 0.060 W/(m K), well comparable to conventional building materials. Similarly, acoustic results were very promising, showing absorption coefficients that, for the given thickness, were generally higher than 0.5 from 500 Hz on, and higher than 0.9 from 1 kHz on. Finally, the effects of the non-acoustic properties and of the air gap behind the samples on the acoustic behavior were also analyzed, proving that the agreement with absorption values predicted by empirical models was also very good.
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spelling pubmed-69267692019-12-24 Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers † Rubino, Chiara Bonet Aracil, Marilés Gisbert-Payá, Jaime Liuzzi, Stefania Stefanizzi, Pietro Zamorano Cantó, Manuel Martellotta, Francesco Materials (Basel) Article In recent years, the interest in reusing recycled fibers as building materials has been growing as a consequence of their ability to reduce the production of waste and the use of virgin resources, taking advantage of the potential that fibrous materials may offer to improve thermal and acoustic comfort. Composite panels, made of 100% wool waste fibers and bound by means of either a chitosan solution and a gum Arabic solution, were tested and characterized in terms of acoustic and non-acoustic properties. Samples with a 5 cm thickness and different density values were made to investigate the influence of flow resistivity on the final performance. Experimental results demonstrated that the samples had thermal conductivity ranging between 0.049 and 0.060 W/(m K), well comparable to conventional building materials. Similarly, acoustic results were very promising, showing absorption coefficients that, for the given thickness, were generally higher than 0.5 from 500 Hz on, and higher than 0.9 from 1 kHz on. Finally, the effects of the non-acoustic properties and of the air gap behind the samples on the acoustic behavior were also analyzed, proving that the agreement with absorption values predicted by empirical models was also very good. MDPI 2019-12-03 /pmc/articles/PMC6926769/ /pubmed/31816936 http://dx.doi.org/10.3390/ma12234020 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rubino, Chiara
Bonet Aracil, Marilés
Gisbert-Payá, Jaime
Liuzzi, Stefania
Stefanizzi, Pietro
Zamorano Cantó, Manuel
Martellotta, Francesco
Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers †
title Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers †
title_full Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers †
title_fullStr Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers †
title_full_unstemmed Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers †
title_short Composite Eco-Friendly Sound Absorbing Materials Made of Recycled Textile Waste and Biopolymers †
title_sort composite eco-friendly sound absorbing materials made of recycled textile waste and biopolymers †
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926769/
https://www.ncbi.nlm.nih.gov/pubmed/31816936
http://dx.doi.org/10.3390/ma12234020
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