Factors affecting morphology and property of polymer blend via reactive process I

The morphology and thermal properties of nylon-6 and ABS blends with reactive compatibilizer have been studied as a function of viscosity ratio of the components, concentration of compatibilizer, and the components ratio. Viscosity ratio of the nylon-6/ABS was varied from 0.3 to 2.0. For 20 wt% nylon and 80 wt% ABS blends, nylon was a dispered phase and the size of the dispersed phase was decreased by the addition of compatibilizer. It was found that the minimum particle size occurred at the viscosity ratio of 0.75 with or without compatibilizer. Dispersed phase size was decreased significantly by the addition of compatibilizer and tended to level off from 15-20 wt% compatibilizer based on the amount of nylon. For 50 wt% nylon and 50 wt% ABS blend, the nylon and ABS showed co-continuous phase. No significant difference of the peak melting temperature and crystallinity was observed, while crystallization temperature was decreased with increasing the concentration of compatibilizer.