Modification of PLA through reactive extrusion and its compatibility with ABS: a critical review of the theoretical framework.

Abstract

Polylactic acid (PLA) is a bio-based polymer that has gained importance due to its renewable origin and compostable potential. However, its limited mechanical and thermal properties hinder its use in demanding applications. This article analyzes, through a review of the theoretical framework, the mechanisms of PLA modification via reactive extrusion and its subsequent compatibilization with polymers such as acrylonitrile-butadiene-styrene (ABS). Technologies, modifying agents, and compatibilizers are reviewed, assessing the interaction between phases and its impact on morphology, processability, and performance. This theoretical investigation contributes to the understanding of PLA/ABS blends as a sustainable alternative to polymers of fossil origin.