Polímeros: Ciência e Tecnologia
https://www.revistapolimeros.org.br/article/doi/10.1590/0104-1428.1840
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Acacia bark residues as filler in polypropylene composites

Taflick, Ticiane; Maich, Élida Gonçalves; Ferreira, Laís Dias; Bica, Clara I. D.; Rodrigues, Silvia Rosane Santos; Nachtigall, Sônia M. B.

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Abstract

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.

Keywords

composites, natural fibers, impact properties, tensile properties, thermal degradation.

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