STUDIES ON PPO/PA6/SEBS BLENDS VIA REACTIVE EXTRUSION

PPO g MA, which was prepared by melting extrusion, has demonstrated to be an efficient reactive compatibilizer in compatibilizing the immiscible polymer blend of PPO, PA6 and SEBS. The PPO g MA copolymer in situ formed during melt blending tends to reduce the interfacial tension and results in finer phase domains and enhanced interfacial adhesion. The TEM result shows that PPO particles containing SEBS elastomeric phase is dispersed in PA matrix. The impact property improvement of PPO/PA6 blend resulted from adding elastomer SEBS is very drastic. When the content of PPO g MA is between 20%~15%(mass%) and SEBS is between 10%~15%(mass%), the brittle ductile transition of PPO/PA6/SEBS blend occurs.