Surface modification of PVC membranes using fluorothiophenol compounds
The controlled chemical surface modification of PVC films by means of three fluoride aromatic compounds, 4-fluoro thiophenol, 3,4-difluorothiophenol and penta fluorothiophenol is reported. To obtain information about the surface selectivity of the reactions, the degree of modification of the polymer...
| Autores: | , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2010 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/187270 |
| Acesso em linha: | http://hdl.handle.net/11336/187270 |
| Access Level: | acceso abierto |
| Palavra-chave: | AROMATIC FLUORINE COMPOUNDS CONFOCAL RAMAN SPECTROSCOPY POLY(VINYL CHLORIDE) (PVC) SURFACE MODIFICATION https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Resumo: | The controlled chemical surface modification of PVC films by means of three fluoride aromatic compounds, 4-fluoro thiophenol, 3,4-difluorothiophenol and penta fluorothiophenol is reported. To obtain information about the surface selectivity of the reactions, the degree of modification of the polymer across the film was determined by depth profiling carried out using confocal Raman microscopy. It is shown that the gradient of the modification degree and the surface selectivity depend on the relationship between the rate constants of the substitution reaction and the diffusion process of the reactant. Therefore it is function of reaction time, temperature and the proportion of solvent/nonsolvent used for the reaction. |
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