مشخصات پژوهش

ABS nanocomposites were prepared in this study by using an indirect method. The method involved the preparation of SAN nanocomposites and subsequent addition of gABS as the second constituent of ABS. For this purpose, in the first step, SAN/clay nanocomposites were prepared containing different loading levels of montmorillonite (MMT). In the next step, gABS was added to the latter nanocomposites in appropriate weight fraction during a melt mixing method. The dispersion situation of the clay layers were determined by using XRD and TEM analysis. The thermal properties of indirectly prepared ABS nanocomposites were compared to that of SAN, SAN nanocomposites, and directly prepared ABS nanocomposites (directly from commercial grade of ABS) in order to verify the effect of gABS. Thermal methods including TGA, DTA and kinetic analysis using dynamic TGA were in order to analysis and comparison of the thermal properties. The results showed that the addition of gABS to the already prepared SAN/MMT nanocomposites leads to lower compatibility between SAN and gABS in the final product, as confirmed by SEM and TEM micrographs. However, higher thermal properties were obtained for indirect method. Dynamic kinetic analyses showed that the addition of gABS and clay changes the kinetic parameters of the thermal degradation reactions.