Full text
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| Author(s): |
Peter Lubomir Polak
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Escola Politécnica (EP/BC) |
| Defense date: | 2010-11-11 |
| Examining board members: |
Ronaldo Domingues Mansano;
Julio Roberto Bartoli;
Marcos Massi;
Duclerc Fernandes Parra;
Shu Hui Wang
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| Advisor: | Ronaldo Domingues Mansano |
| Abstract | |
The objective of this study is to modify the surface of polymeric coatings using plasma, with the aim of creating materials able to form low energy surface and chemical corrosion resistance. Moreover, in this work, was studied the application of the materials in storage compartments and pipelines transporting oil to check corrosion prevention and the reduction of paraffin deposits and other substances in the walls of these structures. Over the project it was found the possibility to use the studied processes in other electrochemical applications, such as the surface modification of selective membranes. So the general idea of this work is to create and/or modify materials with specific properties for electrochemical applications, focusing mainly on the corrosion protection and in the deposition of polymeric films with special functions. Thus, the fluorination of the polymeric layer surface using a reactive plasma environment, the deposition of nanostructured films on polymer films, and the performance evaluation for the films developed to reduce the chemical adsorption were studied. The results have shown that it is possible to develop a coating that combines high adhesion to steel surfaces and low surface tension, due to the creation of a layer with high concentration of fluorine. The processes were promising for modification of commercially available coatings, as only the surface is changed, only small amounts of reagents are used and an anti-adherent surface is created, which decreases the rate of paraffin deposition on the treated surface. (AU) | |