Detalhes bibliográficos
| Ano de defesa: |
2012 |
| Autor(a) principal: |
Silva, Pierre Weinmann da
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| Orientador(a): |
Basso, Nara Regina de Souza
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| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Pontifícia Universidade Católica do Rio Grande do Sul
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia e Tecnologia de Materiais
|
| Departamento: |
Faculdade de Engenharia
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://tede2.pucrs.br/tede2/handle/tede/6182
|
Resumo: |
This work aims to obtain polymer blends containing polypropylene wtih conductive nanofibers formed by polyaniline and graphite nanosheets. Will study the effects of morphology and the electrical and mechanical properties of the resulting polymer. The polyaniline nanofibers are synthesized in the presence of graphite nanosheets using the methodology of rapid mixing. The preparation of blends of polypropylene is made by melting in the inner chamber. The morphology and structure of the nanofillers and blends will be evaluated by scanning electron microscopy (SEM), and Atomic Force Microscopy (AFM). The mechanical properties through tensile testing. The electrical properties by impedance spectroscopy. It was observed that a better dispersion of graphite with polyaniline nanofibers occurs when made in the aqueous solution containing the monomer, aniline in the presence of APS ultrasound for 1 hour. The electrical properties of the synthesized nanocomposite indicate characteristics of semiconductor. The mechanical and thermal properties of the blends did not change significantly with the addition of nanofillers, Higher conductivity values were obtained for high values of frequency, 106 Hz |
