Sound Absorption Properties of Mycelium Based Materials with Textile Waste: An Exploratory Study
54º Congreso Español de Acústica — Tecniacústica 2023
Abstract
This paper shows an exploratory study on the integration of agroindustrial and textile waste through an unconventional approach. By cultivating fungus within a fibrous network, acting as a binder, a sustainable sound absorptive material was developed, starting from Pleurotus pulmonarius fungus, sugarcane bagasse and strips of synthetic textile waste, used as fillers. Fungi were allowed to grow in the substrate for 45 days and were subsequently deactivated and dehydrated by heat treatment. The sound absorption, measured using ISO 1 10534-2, reflects a typical porous sound absorption nature, i.e small at low frequencies and gradually increasing absorption with increasing frequency. The sound absorption average (SAA) was about 40% between 200 and 2500 Hz.