PMMA synthesis for applications in radiologic techniques

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Nicolis Amaral de Araujo
Luciana Carvalheira
Susana Souza Lalic
Francisco José de Oliveira Ferreira
Helen J. Khoury
Francesco d'Errico
Marcio N. Souza
José Carlos Pinto
Sonia Tatumi
Marcel G. Martins
Rogerio Chaffin Nunes

Resumo

This project goal is to synthesize PMMA polymeric films loaded with grains of MgB4O7:Ce,Li crystal. Regarding the steps involved, suspension polymerization of methyl methacrylate (MMA), the precursor monomer, was carried out and resulted in the PMMA polymeric microparticles (Figure 1). Suspension polymerization is simple, fast and of high conversion [4]. Besides, this polymerization process allows the addition of MgB4O7:Ce,Li that will be present in the final PMMA polymeric film. The obtained polymeric films will be characterized by Thermogravimetric analysis (TGA) for determining Tg – transition glass temperature – value; Differential scanning calorimetry (DSC) under nitrogen atmosphere to investigate thermal transitions; Gel permeation chromatography (GPC) for molar masses determination; Fourier transform infrared spectroscopy (FTIR) for the chemical characterization. During this project, polymeric films will be produced with different thicknesses and different percentages and grain sizes of MgB4O7:Ce,Li. Natural boron will be used in this crystal synthesis.


 

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Seção
Materials and Chemistry