Amidação de Poli( metacrilato de metila)

• Autor(a) principal: Pimenta, Paulo Osório de Bettencourt
• Data de Publicação: 2010
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/15775
• topic: Amidation; derivatization; poly(methylmethacrylate) amidation; poly(methylmethacrylate) modified; Amidação; derivatização; amidação do poli (metacrilato de metila); poli (metacrilato de metila) modificado; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA

This work evaluated methodologies for amidation reaction of commercial samples of poly (methylmethacrylate), PMMA, with allylamine and benzylamine. The reaction was performed in a tube under heating at 90 ° C for seven days without any measurable amount of amide could be detected by FTIR and NMR. The reaction was reassessed under catalysis of DBU, 3,4 mol %, without any positive results. The use of DBU associated with NaCN as co-catalyst was effective with PMMA can be derivatized by 30%, with allylamine, and 13% with benzylamine under the same conditions of temperature and time. The elemental analysis and 1H-NMR were conclusive in quantifying the reactions while FTIR was found to be unreliable due to overlapping of bands. The tactic of commercial samples of PMMA and the material produced can be assessed by NMR. Exploratory experiments conducted in single-mode microwave oven under the same molar ratios heated at 120 º C for 30 minutes with 80 W of power were not able to promote changes in the polymer matrix