Evaluation of Seashell-Based Polymer Composites for Sustainable Eco-Friendly Building Applications

What is it about?

This study explores how discarded seashells, periwinkle shells, and snail shells can be turned into useful building materials instead of being thrown away as waste. These shells were ground into fine powders and mixed with different types of polymers (plastic-like binders such as epoxy resin, acrylic, and polyvinyl alcohol) to make new composite materials. The composites were shaped into boards and tested to see how strong and durable they are. The results showed that periwinkle shells combined with epoxy resin and a hardener produced the strongest material. This composite had the highest hardness value and could withstand greater bending forces compared to the others. Seashell-based composites also performed well, while snail shells gave lower strength. Thermal analysis revealed that all shell particles remained stable up to about 250 °C, meaning they can endure heat without breaking down quickly. Microscopic examination confirmed that the shell particles were evenly distributed within the polymers, which helped improve their strength. Overall, the findings suggest that waste shells, which are normally an environmental problem in coastal regions, can be repurposed into eco-friendly, low-cost materials for ceilings and particle boards. These composites could reduce reliance on wood and other non-renewable materials in construction, while also providing a sustainable way to manage shell waste.

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Why is it important?

This work is important because it turns discarded seashell, periwinkle, and snail shells—an environmental waste—into useful, low-cost polymer composites for ceilings and particle boards. Its uniqueness lies in comparing different shell types with various binders, providing a comprehensive evaluation of their mechanical and thermal properties. The study is timely as it addresses the dual global challenges of sustainable construction materials and marine waste management, offering eco-friendly solutions aligned with current sustainability goals.