| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312868 |
| ISSN: | 1516-1439 |
| Authors: | Nohara, Liliana Burakowski1 Petraconi-Filho, Gilberto2 Nohara, Evandro Luis3 Kleinke, Maurício Urban4 Rezende, Mirabel Cerqueira5 |
| Institutions: | 1Instituto Tecnologico de Aeronautica, Departamento de Engenharia Aeronautica e Mecanica, Sao Jose dos Campos, Sao Paulo. Brasil 2Instituto Tecnologico de Aeronautica, Departamento de Fisica, Sao Jose dos Campos, Sao Paulo. Brasil 3Universidade de Taubate, Departamento de Engenharia Mecanica, Taubate, Sao Paulo. Brasil 4Universidade Estadual de Campinas, Instituto de Fisica "Gleb Wataghin", Campinas, Sao Paulo. Brasil 5Instituto de Aeronautica e Espaco, Divisao de Materiais, Sao Jose dos Campos, Sao Paulo. Brasil |
| Year: | 2005 |
| Season: | Jul-Sep |
| Volumen: | 8 |
| Number: | 3 |
| Pages: | 281-286 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | Sized PAN-based carbon fibers were treated with hydrochloric and nitric acids, as well as argon and oxygen cold plasmas, and the changes on their surfaces evaluated. The physicochemical properties and morphological changes were investigated by atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), tensile strength tests and Raman spectroscopy. The nitric acid treatment was found to cause the most significant chemical changes on the carbon fiber surface, introducing the largest number of chemical groups and augmenting the roughness. The oxygen plasma treatments caused ablation of the carbon fiber surface, removing carbon atoms such as CO and CO2 molecules. In addition, the argon plasma treatment eliminated defects on the fiber surface, reducing the size of critical flaws and thus increasing the fiber's tensile strength |
| Disciplines: | Ingeniería, Química |
| Keyword: | Ingeniería de materiales, Química industrial, Fibra de carbono, Tratamiento químico, Plasma, Propiedades fisicoquímicas, Tracción, Morfología |
| Keyword: | Engineering, Chemistry, Materials engineering, Industrial chemistry, Carbon fibers, Chemical treatment, Plasma, Physicochemical properties, Traction, Morphology |
| Full text: | Texto completo (Ver HTML) |
