Abstract
Given the ever-growing environmental concerns, repurposing natural materials is a viable approach to developing novel green materials. Thus, the use of fish scales as reinforcement in composites has great potential. This work aimed to evaluate the influence of using arapaima fish scales as reinforcement in DGEBA/TETA epoxy composites on the mechanical and thermal properties. Composite plates using 30 vol% of arapaima fish scales were analyzed through compression tests, DMA, TGA, and DSC. The compression tests of 30 vol% arapaima/epoxy composites showed a significant increase both in Youngâs modulus (from 710.88±98 at 0% to 1406.20±241 MPa at 30 vol% of scales) and compressive strength (from 20.80±7.14 at 0% to 68.4±11.69 MPa at 30 vol% of scales). The DMA and TGA results showed an improvement in the thermal properties of the composites as compared to the neat epoxy resin, while the DSC results demonstrated that the use of the fish scales as reinforcement did not impair the thermal stability of the resin. These results support the potential of arapaima fish scales as reinforcement in polymeric composites for flooring applications that require high compressive strength and thermal stability
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