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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1588| AMPHIPHILIC BLOCK COPOLYMER FROM HYDROXYLTERMINATED POLYMERS FUNCTIONALIZED WITH TEMPO. A NEW SYNTHETIC METHOD USING OXOAMMONIUM SALT† | |
| URIEL MÁRQUEZ LAMAS TANIA ERNESTINA LARA CENICEROS DIANA GUADALUPE RAMIREZ WONG ENRIQUE SALDIVAR GUERRA JOSE BONILLA CRUZ | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Oxoammonium salts | |
| This work presents a simple approach for the end-functionalization of hydroxyl-terminated polymers with nitroxide moieties using oxoammonium salts (OS). The functionalization is carried out using only one synthetic pathway in which are found high levels of functionalization (90%). A mechanism for the functionalization with TEMPO moieties using OS is proposed in which the formation of peroxide groups is suggested. The structures of the functionalized polymers are characterized in detail by 1H NMR, 13C NMR, DQF-COSY, and HETCOR. Bifunctional macroalkoxyamines are used to demonstrate how to extend the polymer chain for the synthesis of amphiphilic triblock copolymers by polymerizing St in a second block mediated by a nitroxide radical which provides the block length control. | |
| 2011 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| macromex2011_b.pdf | 903.2 kB | Adobe PDF | Visualizar/Abrir |