ポリプロピレンの無水マレイン酸グラフト反応に及ぼす混練装置および混練条件の影響について

抄録

This study investigates effects of mixer type and operating conditions on the graft reaction of maleic anhydride (MAH) on polypropylene using a 2-stage type (NEX-T 50; combination of continuous mixer NCM 50 with single screw extruder, KE 65) and 1-stage type (corotating twin screw extruder KTX 44). The graft reaction by the NEX-T 50 achieved a higher reaction level than that achieved by the KTX 44. The high grafting efficiency of the NEX-T 50 is attributed to microscopic dispersive and distributive mixing of MAH and peroxide in polypropylene in the NCM at a relatively low resin temperature. The MAH grafted PP was then blended with PA 6, and the impact strength of the alloy was measured. The alloy of the PP grafted using the NEX-T 50 showed higher impact strength than that produced in the KTX 44.