AbstractNumerous film and sheet products are formed by coextrusion of polymer pairs such as ABS/HIPS or nylon/ionomers. Any practical attempt to reprocess scrap from such operations will be blends of the component polymers, and the value of these reprocessed materials will be a function of the properties of the resulting blends. Blends of the above‐mentioned pairs were formed by extruder compounding followed by injection molding and were tested for mechanical properties. ABS–HIPS blends showed near additivity of modulus, strength, and elongation at break and should have adequate mechanical properties for many uses. Nylon/ionomer blends showed excellent mechanical properties including higher elongations at break for some blends than either pure component. The effect of moisture on mechanical response was also examined. Blends of this pair should prove to be quite valuable for many applicati
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