Estudo bibliográfico para a análise e caracterização da blenda poliestireno de alto impacto no processamento por múltiplas extrusões

Abstract

High Impact Polystyrene (HIPS) is commonly used in packaging, automotive components, consumer electronics, and construction products. Its increasing demand requires studies that can help mitigate the environmental impacts caused by its improper disposal. In this context, HIPS recycling brings prospects for sustainability and a circular economy. This study aims to conduct an in-depth bibliographic review to comparatively analyze the effects of thermomechanical degradation during the extrusion process of HIPS due to its reprocessing, considering current data available in the literature. To this end, different studies investigating changes in phase morphology, mechanical properties, and extrusion parameters of the material throughout the reprocessing were compared. The synthesis of these studies' results contributes to understanding the degradation of reprocessed HIPS and provides insights for strategies that promote its recycling and reuse. The findings reinforce the importance of developing techniques that minimize degradation effects and ensure the feasibility of HIPS reprocessing within the principles of the circular economy.