Thermal Properties, Morphology Of Polyamide6/Polycrbonate And Related Applications

Diglycidyl ether of bisphenol-A (DGEBA) was selected as a compatibilizer in the blends of polyamide 6 (PA6) and bisphenol-A polycarbonate (PC). SEM observations showed that much finer morphology was observed in presence of DGEBA. The thermal properties, such as glass transition, melting point, crystallization temperature and rate, of the blends were investigated using DSC. One may conclude that the introduction of DGEBA caused strong dependence of these thermal properties on the composition because of the compatibilization.Crosslinked powder butadiene-acrylonitrile rubber (PNBR) was grafted with maleic anhydride (MA) and was employed as a compatibilizer in polyamide/polycarbonate (PA6/PC) blends. The relative degree of grafting on PNBR was characterized with ratio of infrared absorbance intensity of C=O to C≡N. SEM observations showed that much finer morphology was obtained in presence of MA grafted PNBR. The thermal behaviors of the blends including glass transition, melting, and crystallization exhibited strong dependence on the composition, which indicated an effective compabilization of MA grafted PNBR. With the compatibilizer introduced, the impact strength of the blends was one order of magnitude increased.