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Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

Resumo

TAFLICK, Ticiane et al. Acacia bark residues as filler in polypropylene composites. Polímeros [online]. 2015, vol.25, n.3, pp.289-295. ISSN 1678-5169.  https://doi.org/10.1590/0104-1428.1840.

Large amounts of acacia bark residues are produced each day after tannin extraction with hot water, being generally burned. This by-product was chemically characterized and used as filler in polypropylene (PP) composites, considering different particle sizes and concentrations. The materials produced by melt blending had their mechanical and thermal properties evaluated. It was verified that, even containing a significant amount of extractable compounds, the acacia bark particles can produce PP composites with higher impact properties, higher crystallization temperature and higher degradation temperature in comparison to the polymer matrix.

Palavras-chave : composites; natural fibers; impact properties; tensile properties; thermal degradation.

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