ACOUSTIC AND MECHANICAL PERFORMANCE OF SUSTAINABLE PANELS MANUFACTURED FROM PLYWOOD SAWDUST WASTE

Abstract

The rapid expansion of the global interior design industry has intensified demand for plywood products, generating substantial processing waste that requires effective management strategies. This study investigates the development and performance evaluation of acoustic panels manufactured from plywood sawdust waste as a sustainable solution integrating circular economy principles with functional building materials. Three panels were fabricated using plywood sawdust combined with environmentally friendly binders, namely polyvinyl acetate (PVAc) and bio-resin. Comprehensive testing was conducted to assess acoustic performance through impedance tube measurements (ISO 10534-2, ASTM E1050-08), mechanical properties via compressive strength testing (ASTM D1037), and moisture resistance according to SNI 03-2105-2006 standards. Results demonstrated that all panel configurations exhibited strong sound absorption capabilities in the medium to high frequency range (400-6300 Hz), with Panel A achieving a peak sound absorption coefficient of 0.83 at 3150 Hz, qualifying as a Class B absorber per ISO 11654. Compressive strength values ranged from 0.21 to 0.35 MPa, adequate for non-load-bearing acoustic applications. Moisture content measurements confirmed dimensional stability, with all panels maintaining values well below the 14% maximum threshold specified by Indonesian standards. The findings validate the technical feasibility of converting plywood industrial waste into functional acoustic panels, offering the furniture and interior design sectors a practical waste valorization pathway while addressing acoustic comfort requirements in buildings. This research contributes to sustainable material innovation by demonstrating effective integration of waste management, environmental responsibility, and technical performance in acoustic panel development.