Preparação e Caracterização de Compósitos a Base da Blenda PA6/PET com Cinza de Bagaço de Cana Como Carga de Reforço e Joncryl Como Agente Compatibilizante

This paper brings up about the development and determination of rheological and thermal properties of synthetic composites made from the melt mixture of PA6/PET blend with sugarcane bagasse ash(reinforcer fiber) in a torque rheometer, at different mass compositions. Its characterization was determined by thermogravimetric analysis(TGA), differential scanning calorimetry(DSC) and torque rheometry, in a way it presents the viability and possible applications of the composites. Although this project is about synthesizing new materials with mixed properties, the main focus of the research is to make the development of the composites an alternative for recycling plastic and agro-industrial wastes. Furthermore, it was also studied the efficiency and impact of the addition of an oligomer(joncryl) as a coupling agent in the composite. By torque rheometry, it was checked that, in general, the increase of PA6 in the composition also increases the torque of the composite, the ones with the coupling agent had an increase as well. On the top of that, the TGA of the composites revealed that the ones with more percentage of PET had more thermal resistance to degradation, plus the addition of the oligomer in composites also increased their thermal stability when compared with the ones without it, the 100%PET with coupling agent composite particularly had a huge stability, considerably more than the pellet PET alone. As a matter of fact, the increase of mass concentration of PET in the mixture allowed the PA6 to have less hygroscopicity, which is a major issue of its processment. It was revealed by DSC that Blends with less than 75% PET w/w didn’t have cold crystallization.