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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1186| FUNCIONALIZACIÓN DE POLIPROPILEN GLICOL HIDROXITERMINADO CON GRUPOS NITRÓXIDO | |
| URIEL MÁRQUEZ LAMAS JOSE BONILLA CRUZ TANIA ERNESTINA LARA CENICEROS ENRIQUE SALDIVAR GUERRA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Polipropilen glicol hidroxiterminado | |
| A new, simple and general approach for the end-functionalization with nitroxide moieties, of polypropylene glycol hydroxyl-terminated (PPG) using for the first time oxoammonium salts (Br-TEMPO) in the presence of Et3N in solution under mild reaction conditions is discussed. As far we know the oxoammonium salts has not been used before for this end in polymers. The functionalization process is carried out using only one synthetic pathway in where high levels of functionalization (98%) measured by 1H-NMR and titration (as indirect test) were found. A functionalization reaction mechanism is proposed, in where peroxides groups are formed. The structure of the difunctional macroalkoxyamine containing peroxide bonds at the ends of each chain was confirmed by 1H-NMR. | |
| 2010 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| Tijuana2010_b.pdf | 664.51 kB | Adobe PDF | Visualizar/Abrir |