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Functionalization of Polymers Hydroxyl-Terminated Using Oxoammonium Bromide Salt. Facile Synthetic Pathway Using Nitroxide Chemistry
JOSE BONILLA CRUZ
TANIA ERNESTINA LARA CENICEROS
ENRIQUE SALDIVAR GUERRA
Acceso Abierto
Sin Derechos Reservados
Polymers Hydroxyl-Terminated
TEMPO bromide salt (Br-TEMPO) is used to functionalize polymers containing hydroxyl terminated groups whit nitroxide moieties. The functionalization reaction takes place in 24 h under mild conditions in solution. FT-IR and 1H-NMR analysis show that these polymers were for first time functionalized with nitroxide moieties using this synthetic pathway. A reaction mechanism is proposed in order to explain the findings, where we postulate the formation in situ of peroxidic bonds. This peroxidic bond was quantified by titration finding moderate functionalization levels (~50%). The results suggest that the oxoammonium salts are good candidates for the functionalization of polymers containing hydroxyl groups.
2008
Memoria de congreso
Inglés
OTRAS
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