Mechanical Properties of PP/PE/Clay Nanocomposites

Polypropylene (PP)/ high density polyethylene (HDPE) blend nanocomposites were prepared using an internal mixer. One commercial organo-montmorillonite (۲۰A) and one maleated polymer (PP-g-MA) served as the reinforcing filler and compatibilizer, respectively. Four different blending sequences were studied. The results showed that clay in all the nanocomposites had a tendency to distribute in matrix phase or interface and formed the intercalated structure when PP-g-MA was presented. The tensile modulus of PP/HDPE blends increased after adding C۲۰A. Specifically, there was a synergistic effect of PP-g-MA and clay in improving the particles size distribution in some nanocomposites. The results also show that the degree of the synergistic compatibilizing effect was dependent on the nanocomposite preparation condition such as blending sequences and rotor speed during preparing of the nanocomposites.

کلیدواژه ها:

Polypropylene ، high density polyethylene ، montmorillonite ، nanocomposites