ECO-SUSTAINABLE PHOTOLUMINESCENT EPOXY COMPOSITES INCORPORATING ETNA VOLCANIC ASH AS A NATURAL WASTE FOR DECORATIVE BUILDING APPLICATIONS

This research presents the development of composite materials based on epoxy resin, enriched with volcanic ash from Mount Etna and photoluminescent additives, intended for decorative applications in the construction sector. The dual objective is to repurpose a naturally abundant by-product, often treated as waste and to promote sustainable and functional solutions for contemporary architecture. Experimental formulations incorporated both raw and ground volcanic ash, highlighting how particle size directly influences the photoluminescent properties of the materials. Notably, untreated and non-powdered ash proved more effective in maintaining luminous intensity. The integration of volcanic ash increases the overall mass of the composite while reducing the amount of polymer required, enhancing production efficiency and supporting a circular approach. The developed prototypes, in the form of mosaic tiles, demonstrate the ability to store solar energy and release it in lowlight environments, contributing to passive illumination. The innovation lies in the synergy between natural resources and low-impact technologies, opening new perspectives for eco-compatible building materials and responsible design.