| 초록 |
The effect of processing conditions in the melt mixing process of poly(butylene terephthalate) (PBT) additive in the matrix of polypropylene (PP) was investigated by small and wide angle X-ray scattering methods (SAXS, WAXD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), polarized optical microscopy (POM). Changing the mixing conditions such as temperature and amount of shear leads to a significant change in the morphology of the binary mixtures. At high temperatures much above the melting of PBT with high shear rates, the small amount of PBT with a spherical geometry was nicely dispersed in the matrix of PP, whereas it deformed into fibrilles in a micrometer scale at relatively low temperatures near the melting of PBT with mild shear rates.
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