Compatibilization through Specific Interactions and Dynamic Fragility in Poly(<scp>D</scp>,<scp>L</scp>‐lactide)/Polystyrene Blends

Abstract

Abstract Incorporation of OH groups into PS by copolymerization with hydroxystyrene caused specific OH···OC interactions with carbonyl groups of PDLLA. PDLLA blends with PSHS16 were completely miscible across the whole composition range, showing a single glass transition. Specific interactions and phase structure were analyzed by FTIR spectroscopy and SEM. DMA around T g using the WLF theory and Angell's dynamic fragility concept revealed that specific interactions are not acting as other topological constraints (cross‐links, crystalline lamellae, silicate layers), since they rather provide a retardation of segmental dynamics. magnified image