|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||K-91: Influence of Pmma Chemical Degradation in Ethanol
||Karollyne Gomes de Castro Monsores, Géssica Nicolau, Anderson Oliveira, Suzane Oliveira, Ricardo Weber
|On-Site Speaker (Planned)
||Karollyne Gomes de Castro Monsores
Polymethylmethacrylate (PMMA) is a transparent, rigid and light thermoplastic. As a result of its high mechanical strength and ease of conformation, it offers diverse applications, such as in automotive parts, facades, displays and biomedical devices. However its chemical degradation is susceptible to organic solvents promoting macromolecular changes that consequently influence the mechanical properties. Thus, this work aimed to investigate the chemical interaction of the solvent with PMMA through chemical aging tests in anhydrous ethanol, with a controlled temperature of 30 ° C and 60 ° C. A slight reduction in light transmittance was observed by UV-VIS spectroscopy as well as a reconfiguration in the chemical bonds present through the FTIR. The impact strength for both conditions was reduced, indicating a brittleness of the material.