Physico-chemical studies on polymethyl methacrylate alite composite

The influence of methyl metharcylate and gamma exposure dose on the physico -chemical and mechanical properties of polymer-elite composite have been in vestigated. The hardened elite samples were impregnated with a methyl metha crylate monomer and then subjected to gamma irradiation doses from 10-50 KG y, The effect of polymer loading (%), compressive strength, bulk density an d the microstructure (scanning electron microscopy SEM), in addition IR spe ctra were studied. The results indicate that, polymer loading, compressive strength and bulk density increase with increasing absorbed dose. This is a ttributed to the deposition of the polymer in the pores of the samples. SEM showed the voids between the particles in the samples before the impregnat ion, whereas, the formation of new products in the pores appeared after imp regnation.