Chemical grafting of waste polystyrene with acrylic acid and subsequent amine functionalization to enhance polystyrene modified bitumen characteristics (opens in new tab)

The rigid polystyrene (PS) waste could be an alternative bitumen modifier, which brings great economic and environmental efficiency. However, because of low polarity and high rigidity nature of PS, it sometimes poses some difficulties in compatibility, elasticity, and storage stability. To address these limitations, the present study proposed an alternative chemical modification method for waste polystyrene through grafting with acrylic acid followed by a reaction with diethylenetriamine to p...