ABS/PA6 blends compatibilized with styrene-maleic anhydride(SMA) was prepared in a corotating twin-screw extruder.SEM

DMA were used to characterize morphology.The results show that the compatibility of the blends prepared by pure PA6 and ABS is very poor.The boundary between the phase domains of PA6 and ABS without SMA is sharp and clear

and the dispersed phase is prone to congregate.In the case of adding SMA

the compatibility of PA6 and ABS is improved

the particle size of dispersed phase is decreased

interfacial area per volume unit dispersed phase is increased compared with the binary blends of PA6 and ABS

and the blend containing 55% ABS

interfacial area per volume unit dispersed phase is minimal

the existence of SMA causes a composition shift of phase inversion to a higher weight fraction of PA6.