Implantação de Íons de Nitrogênio em PMMA Através de uma Fonte Kaufman

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DOI:

https://doi.org/10.18226/23185279.v5iss1p31

Abstract

A modificação de superfícies é uma técnica que a engenharia tem feito uso há muito tempo, para melhoria de propriedades em materiais. O poli metil-metacrilato (PMMA), por ser um material de constante uso em aplicações biomédicas, exige que sua superfície apresente características favoráveis à adesão celular e compatibilidade com tecidos. Os polímeros, de uma maneira geral, quando submetidos a tratamentos em plasma, tendem a formar grupos funcionais que alteram propriedades ópticas, químicas, físicas e de biocompatibilidade. Em função disso, este trabalho propôs realizar a funcionalização de substratos de PMMA através da fonte de íons Kaufman. Amostras de PMMA foram submetidas ao feixe de íons de nitrogênio gerado pela fonte Kaufman, em diversas condições. A caracterização foi feita pelas técnicas de GD-OES, FTIR e EDS. Ficou comprovado, através do perfil de concentração de nitrogênio obtido por GD-OES, que a quantidade de nitrogênio na superfície aumenta gradativamente com o tempo de implantação e a potência. Outro indício foi a análise em FTIR, que mostrou presença de aminas nas faixas entre 1654-655 cm-1 e 3300-3700 cm-1. A análise em EDS, porém, comprovou também a presença de ferro e cromo, agentes citotóxicos, que precisam ser eliminados para a continuidade dos trabalhos.

 

http://dx.doi.org/10.18226/23185279.v5iss1p31

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Published

2017-08-10

How to Cite

Fontoura, C. P., Wanke, C. H., & Aguzzoli, C. (2017). Implantação de Íons de Nitrogênio em PMMA Através de uma Fonte Kaufman. Scientia Cum Industria, 5(1), 31–36. https://doi.org/10.18226/23185279.v5iss1p31

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Science, Education and Engineering