Efeito da poliamida 6 e de compatibilizantes reativos no desempenho de blendas com matriz de polipropileno.

Abstract

The development of new materials by mixing of polymers (polymer blends) is feasible and allows the combination of different properties of existing polymers extending the range of technological applications. In this research for the development of blends were used PP/PA6 two stages: the first was to determine the concentration of 20, 30, 40 and 50% by weight of polyamide 6 (PA6) matrix of polypropylene (PP). The second step was to investigate the influence of three reactive compatibilizers (PP-g-MA, PP-g-AA and E-GMA) on the performance of blends of PP/PA6 in a fixed concentration. In both stages of this work, we used a twin-screw extruder counter-rotational to perform all the mixtures, where, later, the samples were injected and the mechanical tests of tensile and impact analysis and scanning electron microscopy (SEM) , Differential Scanning Calorimetry (DSC), Fourier Transform Spectroscopy in the Infrared of Region (FTIR), X-Ray Diffratometry (XRD) and oscillating rheometry in Linear Viscoelastic Regime. In the first stage, the impact resistance of the blends was improved compared to pure PP, but due to immiscibility between the polymers, the tensile strength of the blends were reduced. In the second stage there was significant improvement of mechanical properties of the blend with the addition of the compatibilizer PP-g-MA compared to the blend without compatibilizer.