Synthesis and Properties of Polymer Blend Nanocomposites. Part II. Thermoplastic Olefins (TPO)

摘要

Nanocomposites with organically treated montmorillonite derived from layered silicates in various PP/EPDM blends were prepared by direct melt intercalation in an internal mixer. In these nanocomposites, the nanoclay reinforcement is constrained to lie selectively either in the continuous matrix or in the dispersed phase or both phases of a thermoplastic olefin. The morphology as well as mechanical properties of the nanocomposite blends are strongly affected by the selective reinforcement of each phase. Morphology characterization by x-ray diffraction (XRD) and transmission electron microscopy (TEM) provide the basis for understanding the observed structure-property relationships in this class of materials.