Preparation of Polymerization-Filled Composites

This relatively new trend in PCM manufacturing business amounts to creating a polymeric matrix out of the liquid or gaseous phase directly on the filler surface which has previously undergone special conditioning aimed at generating active polymerization sites on it. 

The polymerization filling was effected by the ion-coordination mechanism [17-19]. The monomers were ethylene, propylene, allene, os-butylene, butadiene. The fillers were mineral materials such as ash, graphite, silica gel, glass fibers. The ultimate aim of filler conditioning prior to polymerization is to secure, on its surface, metal complex or organometallic catalysts by either physical or chemical methods [17-19], 

Titanium, vanadium or chromium oxides activated with chlorine-free organo-aluminum compounds, triethyl- or triisobutyl aluminum, have also been used as catalysts [285], 

It should be noted that by immobilizing the metal complex catalysts on carbochain polymers it is possible to prepare polymer-polymer compositions using PVC, PMMA, poly(vinyl acetate), etc., as the polymeric fillers [286-287]. 

Recently, a synthesis of PE on the waste of the cellulose and woodworking industry has been reported [288]. Good quality structural and cladding materials can be obtained by pressing these compositions, or special grades of paper and cardboard after appropriate processing. 

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