STUDY SOME PHYSICAL PROPERTIES OF POLYMERIC BLENDS (SR/ PMMA)

Abstract

Many face organs are exposed to different environmental conditions in terms of different of ambient temperature, degradation, discoloration, changes in humidity and especially frequent washing of these organs. These conditions cause changes in the structure of materials so, for restoring the function and improving aesthetics of the affected areas of maxillofacial by surgical reconstruction and prosthetic rehabilitation the silicone rubbers (SR) and PMMA are the materials of choice. So that, the aim of this research is to investigate the effect of addition of polymethyl methacrylate (PMMA) material on the physical properties of blends from SR/PMMA at different weight percentage (5%, 10%, 15% and 20%) of PMMA to silicone rubber. Fourier transform infrared spectrometer test ) FTIR(, density, water absorption and thermal properties were done on the all prepared samples, which are used for maxillofacial prostheses applications. The results showed that there is good correlation in FTIR spectrum for reference silicone rubber and (SR/PMMA) polymer blend and this confer a good compatibility between silicone rubber matrix material and PMMA. As well as the physical properties showed that the favorite percent of PMMA is 10% which has ideal characteristic. So, this sample may be a suitable material to achieve the properties required for maxillofacial prosthetic applications.