Abstract: Polyethylene-nanocomposites with CaCO₃-weight fractions from 0 to 15 wt.% were prepared by in-situ polymerization with Me₂Si(Ind)₂ZrCl₂/MAO metallocene catalysts. A high activity especially in the presence of TIBA was observed. The morphology was investigated by using raster electron microscopy (REM) showing that the CaCO₃-nanoparticles are uniformly distributed. The melting temperatures and the crystallization temperatures are not much influenced by increasing filler content.

Key words: Nanocomposites, CaCO₃, Polyethylene, Metallocene catalysts

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