NANOCOMPOSITES BASED ON POLYMER BLENDS: EFFECT OF THE ORGANOCLAY ON THE THERMO-MECHANICAL PROPERTIES AND MORPHOLOGY OF PA6/HDPE AND PA6/COMPATIBILIZER/HDPE BLENDS

摘要

The effect of the organoclay on the thermal and mechanical properties and morphology of PA6/HDPE and PA6/compatibilizer/HDPE blends was investigated. The blends and nanocomposites were prepared by injection molding at 240°C and characterized by X-Ray diffraction, Thermogravimetry, mechanical properties and Scanning Electron Microscopy. The results showed that when the organoclay was added to PA6/HDPE blend, the clay peaks were shifted to lower 29 angles indicating that the polymers were intercalated between the Clay platelets. When the organoclay was added to PA6/compatibilizer/HDPE blend, the clay peaks almost disappeared, indicating that an exfoliated structure was formed. The organoclay decreased the thermal stability of PA6/HDPE blend and has little effect on that of PA6/compatibilizer/HDPE blend. The addition of the clay increased the modulus and decreased the impact strength of the blends. The presence of the clay decreased the HDPE particles size on PA6/HDPE blend and changed the morphology of PA6/compatibilizer/HDPE blend.