Preparation and Characteristics of (Poly Methyl Methacrylate' / Poly Vinyl Pyrrolidone) Blend

Abstract

Special attention, has been /focused on. the development: of Polymer blends' in recent, years. It is a member; of a class of materials' analogous to metal, alloys, in which at' least two polymers, are blended together to create, a new material with / different properties. In the present study, Poly (methyl methacrylate) (PMMA) / Polyvinylpyrrolidone (PVP) blends with different weight ratios Poly methyl methacrylate (PMMA) widely used as and the liquid part of methyl methacrylate (MMA) monomer a prosthodontic denture resin, the denture materials resin should exhibit good physical and mechanical properties. In the present research, efforts are made to develop the properties of PMMA resin that used for upper and lower prosthesis complete denture, by different ratios of (0, 2%, 6%, 10%, 14%, 18%, 22%, 26%) to poly methyl methacrylate (PMMA), cold cured. The blend formation has been confirmed from Fourier transform infrared (FTIR), SEM, DSC - TGA and toxicity. By studying DSA and TGA, The DSC test results show that the glass transition temperature (Tg) value is equal (178) c0 and melting point between (368-372) for all concentrations of PMMA/PVP blends. Surface topography and morphology of PMMA-PVP shown by SEM. The results of the toxicological examination showed that the lowest toxicity appeared at a concentration of 78% - 22% for PMMA- PVP. The best results appear in (22%) PVP and (78%) PMMA.