ROUGHNESS AND COLOR EVALUATION OF WOOD POLYMER COMPOSITES FILLED BY HOUSEHOLD WASTE OF MATE-TEA

Pedro H. G. de Cademartori, André L. Missio, Bruno D. Mattos, Darci A. Gatto, Washington L. E. Magalhães, Edson A. Lima

Abstract


This study presents the preparation of polypropylene composites filled with mixtures of household waste of mate-tea and wood particles to increase the economic value chain of mate-tea, especially in Latin America. Filler mixtures in proportions ranging from 0 to 60% depending on the type of particle were used. The polypropylene matrix was fixed at 40% and roughness surface and color evaluation were performed. The highest mean roughness (Ra) was observed for the composite with 30:30% proportion of filler mixture, which denotes the difficulty of homogenizing a mixture of fillers with different shapes and dimensions. Nevertheless, even with higher roughness for composites with a balanced blend of filler, this does not imply the presence of large peaks and valleys. In general, all the composites presented a dark color. Variation of color composites was more evident for higher proportions of household waste of mate-tea.

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