Ecocomposites Based on High-Impact Polystyrene (HIPS) and Amazon Açaí (Euterpe oleracea) Fibers: Influence of NaOH Treatment on Its Structural, Thermal, and Mechanical Properties

The structural, thermal, morphological, and mechanical properties of ecocomposites based on a High-Impact Polystyrene (HIPS) reinforced with açaí (Euterpe oleracea) fibers were evaluated. They were made using 5 wt% açaí fibers treated using 5% NaOH (FT5) and 7% NaOH (FT7). According to a SEM analysi...

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Bibliographic Details
Published in:Mechanics of composite materials 2023-03, Vol.59 (1), p.147-158
Main Authors: Silva, E. C., da Silva, A. F., da Rodrigues, Y. S., Júnior, D. S. Correia, de Oliveira, L. M., Biondo, M. M., Felix, P. H. C., Sales, H. B. E., Sanches, E. A.
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Composite materials
Composites
Elongation
Fibers
Glass
Impact resistance
Materials Science
Mechanical properties
Natural Materials
Polystyrene resins
Solid Mechanics
Thermal stability
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Summary:The structural, thermal, morphological, and mechanical properties of ecocomposites based on a High-Impact Polystyrene (HIPS) reinforced with açaí (Euterpe oleracea) fibers were evaluated. They were made using 5 wt% açaí fibers treated using 5% NaOH (FT5) and 7% NaOH (FT7). According to a SEM analysis, the alkaline treatment allowed us to remove of the low-molecular weight compounds. The FT5 ecocomposite had a higher elongation, (2.9 ± 0.5)%, and impact of resistance, (98 ± 2) J/m, probably due to the presence of mechanical anchoring, which improved its mechanical properties. The FT7 ecocomposite had a slightly higher thermal stability, with a total mass loss of 87.78%.
ISSN:0191-5665
1573-8922
DOI:10.1007/s11029-023-10087-w