Styrenics/Polyamide-Blends - Reactive blending and properties

The combination of polyamide 6 (PA 6) and styrene-butadiene-acrylonitrile (ABS) to polymer alloys with co-continuous morphology leads to an interesting combination of properties. Using recent development in the sampling technique for Twin Screw Extruders, the morphology formation in ABS/PA 6 blends and alloys was studied by microscopy and chemical analysis. it could be shown, that the morphology of the alloys is formed in the initial phase of the extrusion step, while in the physical blend a clear correlation between the dispersion of the phases and the residence time could be observed. By chemical analysis further details of the process could be detected.