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.