2026-04-17T01:40:22Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/200272024-06-18T12:06:33Zcom_2072_452955com_2072_2054col_2072_453062

00925njm 22002777a 4500 dc Serra Parareda, Ferran author Alba, Jesús author Tarrés Farrés, Joaquim Agustí author Espinach Orús, Xavier author Mutjé Pujol, Pere author Delgado Aguilar, Marc author 2021-09-28 Noise pollution has been identified as a cause of a broad spectrum of diseases, motivating researchers to identify building materials capable of attenuating this pollution. The most common solution is the use of gypsum boards, which show a good response for low frequencies but have a poorer response for high frequencies. In addition, due to environmental concerns associated with buildings, the use of materials that minimize environmental impacts must be favored. In this research, two biopolymers, a poly(lactic) acid and a bio-polyethylene, were filled with two typologies of calcium carbonate, and their soundproofing properties were tested using impedance tubes. In addition, the morphology of the fillers was characterized, and here we discuss its impact on the mechanical properties of the composites. The results showed that the incorporation of calcium carbonate into bio-based thermoplastic materials can represent a strong alternative to gypsum, because their mechanical properties and sound barrier performance are superior. In addition, the inclusion of mineral fillers in thermoplastic materials has a positive impact on production costs, in addition to preserving the advantages of thermoplastics in terms of processing and recycling. Although the use of carbonate calcium decreases the mechanical properties of the materials, it enables the production of materials with insulation that is four-fold higher than that of gypsum. This demonstrates the potential of these materials as building lightweight solutions This research was funded by Agencia Estatal de Investigación, project METASON (PID2019-109175GB-C22) http://hdl.handle.net/10256/20027 Contaminació acústica Noise pollution Plaques de guix laminat Drywall Materials de construcció Building materials Biopolímers Biopolymers Termoplàstics Thermoplastics Aïllament acústic Soundproofing Characterization of CaCO3 Filled Poly(lactic) Acid and Bio Polyethylene Materials for Building Applications