Characterization of Partially Sulfonated Polyoxadiazoles and Oxadiazole-triazole Copolymers

Autor: Gomes, D., Roeder, J., Ponce, M.L., Pereira Nunes, S.
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Zdroj: Gomes, D.; Roeder, J.; Ponce, M.L.; Pereira Nunes, S.: Characterization of Partially Sulfonated Polyoxadiazoles and Oxadiazole-triazole Copolymers. In: Journal of Membrane Science. Vol. 295 (2007) 1-2, 121-129. (DOI: 10.1016/j.memsci.2007.02.046)
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2007.02.046)
Popis: Experimental evidences regarding the sulfonation of polyoxadiazole and oxadiazole–triazole copolymers during the preparation are given. The structures of the polymers were qualitatively and quantitatively characterized by elemental analysis, 1H NMR, and FTIR. Polymers with high molecular weights (up to 470,000 g/mol) exhibiting highly oxidative stability are obtained allowing the casting of mechanically stable membranes with high storage modulus (about 4 GPa at 100 °C) and high proton conductivity values (order of magnitude of 10−2 S cm−1 at 80 °C).
Databáze: OpenAIRE
Pro tento záznam nejsou dostupné žádné jednotky.