NEW ASPECTS OF POLYAMIDE-6 MIXING IN MOLTEN STATE WITH LOW-DENSITY POLYETHYLENE

A static mixer assembled on a Brabender plastograph has been used as a blender of immiscible polymers like low-density polyethylene (LDPE) a nd polyamide 6 (PA6). The shearing rates were 50 and 100 s(-1). The pr operties of polymer blends were tested using a thermomechanical method . It was found that a tested prototype static mixer imparted good unif ormity to the blends' structure on a level similar to molecular distri bution of components. This phenomenon is called mechanical compatibili zation. High effectiveness of mixing was observed for LDPE-PA6 composi tions with and without a compatibilizer. (C) 1997 John Wiley & Sons, I nc.