High activity Polyethylene/Clay Nanocomposite made with a Metallocene supported on Montmorillonite

Polyolefins/clay nanocomposites are a new type of polyolefins–based composites that have attracted great interest, both industry and academy, because of havingimproved properties when compared to the neat polyolefions, such as, better flame resistance, higher mechanical properties,higher thermal stability, better barrier properties, and better abrasion resistance [1]. Morphology of clay layers in polymer/clay nanocomposites, are intercalated or exfoliatedwhich can obtained by three methods: melt blending, solution blending, and in situ polymerization, The last one is the mosteffective method for production of polyolefins/clay nanocomposites. Polyolefins are usually produced from heterogeneous or homogeneous Ziegler–Natta catalyst(metallocene). Metallocene catalyst shows higher activity in the polymerization of α-olefins [3]. Many papers and patents have been published on effective coordination catalyst immobilization method that prevent deactivation of catalysts by adsorbed water present on the clay surface [1-4].In this investigation, we have established a new modification method to achieve an active supported metallocene catalyst on clay surface.