Caracterización de Compuestos de Polipropileno Reforzados con Polvo de Bambú y Nanoarcillas Obtenidos Mediante Extrusión e Inyección

Abstract

The effects of bamboo flour and nanoclay on the mechanical and thermal properties of polypropylene matrix were investigated. Thus, bamboo particulate size, bamboo and nanoclay loadings were chosen to assess the properties. Bamboo particulate size were 140, 250 y 595 μm. Furthermore, bamboo loadings were 5, 10, and 15 wt%, and nanoclay loadings were 0, 2.5 y 5 wt%. Maleic anhydride grafted polypropylene was set at 3 wt%. The composites were prepared by extrusion and injection molding. Tensile, flexural, impact, hardness tests were carried out to get the mechanical properties. Statistical analysis was done to know the main effects. Thermal behavior was researched by differential scanning calorimetry, thermogravimetric and thermomechanical analysis. Mechanical test showed that flexural properties were enhanced by using nanoclay and bamboo, but tensile and impact got worse. Thermal tests pointed out lower performance at crystallization because of bamboo and nanoclay, but thermal degradation was improved. The specimen PP-B15-250-N2.5 got the best properties regarding to polypropylene. Its properties´ changes were 85, 21, 59, 11 and 6% at tensile modulus, flexural strength and modulus, hardness and density and, decline 76 and 14% at impact and tensile strength regarding to polypropylene. Finally, the results were compared to other researches.