Preparation of PP-g-PA6 copolymers through reactive blending

An approach of preparing PP-g-PA6 (polypropylene-g-polyamide 6) copolymers through reactive bending, isotactic-PP homopolymers was investigated. PP/PA6 blend was prepared by reactive blending of PP and the PA6-TMI using Dicumyl peroxide(DCP) as initiator. PP-g-TMI graft copolymer was prepared through directly melt grafting of TMI monomers onto PP backbone, Brabender internal mixer with TMI and DCP and grafting reaction was carried out at 200°C for 5 minutes give raw PP-g-TMI product with acetone. PP/PP-g-MA/PA6 blends before and after extracting by formic acid, most of the PA6 phases has been removed after formic acid extraction that which indicate little PP-g-PA6 copolymer could be formed by simply using PP-g-MA as compatibilizer. The result indicated that the reaction between TMI and the end amino group of PA6 occurred during the melt blending process.