Effect of adding endocarp residue tucumã (Astrocaryum Aculeatum) in High Impact Polystyrene (HIPS)

ABSTRACT This work investigated the effect of adding residue from the tucumã (Astrocaryum Aculeatum) endocarp in high impact polystyrene. Specimens were obtained through plastic injection processing, to make the specimens, 2% and 4% by weight of waste (CPS2 and CPS4) were used. Thermal (TG and DSC), mechanical (impact test and tensile strength tests) and a study with infrared spectrometry (FTIR) were performed. Therefore, the mechanical study indicated a lower impact and traction resistance of CPS2 and CPS4 compared to pure material (HIPS). The thermal study indicated that thermal stability is improved with the incorporation of the residue. Through infrared spectrometry (FTIR), it was possible to verify the loss of monosubstitution bonds. In general, it was possible to observe a good adhesion between the particles, the compatibilizing effect of the residual lignin was noted, the residue-polymer interactions caused changes in the thermal, mechanical and spectroscopic properties in the specimens.