Abstract: Polystyrene oxide (PPO)/polyamide 66 (PA66) alloys containing a reactive compatibilizer, N,N,N′,N′tetraglycidyl4,4′diaminodiphenyl methane (TGDDM), were prepared via melting reactive extrusion. The structure of the alloys was studied using Fourier transform infrared spectroscopy. The mechanical properties, rheological behavior, and microstructure of the obtained blends were investigated. It showed that, PA66coTGDDMcoPPO copolymers were formed in the reactive extrusion. With increasing amounts of TGDDM, melt flow rates of the alloys decreased, and energy consumption increased. A drastic improvement of mechanical property was observed upon addition of a very small amount of TGDDM. Scanning electron microscope showed that TGDDM changed the shape of the dispersed phase particles.

Key words: PPO, PA66, TGDDM, blending alloy, reactive compatibilizing