Acacia bark residues as filler in polypropylene composites

作者：Taflick Ticiane; Maich Elida Goncalves; Ferreira Lais Dias; Damiani Bica Clara Ismeria; Santos Rodrigues Silvia Rosane; Bohrz Nachtigall Sonia Marli

来源：Polimeros-Ciencia e Tecnologia, 2015, 25(3): 289-295.

DOI：10.1590/0104-1428.1840

• composites
• natural fibers
• impact properties
• tensile properties
• thermal degradation

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.

• 出版日期2015-6