TY - JOUR
T1 - Sulfonated polynaphthalimides with benzimidazole pendant groups
AU - Álvarez-Gallego, Yolanda
AU - Ruffmann, Bastian
AU - Silva, Vasco
AU - Silva, Hugo
AU - Lozano, Angel E.
AU - de la Campa, José G.
AU - Nunes, Suzana Pereira
AU - de Abajo, Javier
N1 - Funding Information:
Financial support provided by the ‘‘HGF-Strategiefonds'’ project ‘‘Membranes and Electrodes for DMFC'’ (Germany) and the Spanish Ministry of Education and Science (MAT2007-62392) is gratefully acknowledged.
PY - 2008/8/26
Y1 - 2008/8/26
N2 - A series of new polyimides bearing simultaneously sulfonic acid groups and benzimidazole rings in different proportions have been synthesised by one pot high temperature polycondensation. The composition of the copolymers, as well as the distribution of the ionic sites along the polymer chain, has been changed systematically in order to study their relation with polymer properties. The incorporation of sulfonic side groups in the structure improves the solubility in polar organic solvents. In turn, the presence of sulfonic acid moieties impairs thermal resistance. Membranes based on the synthesised polyimides were prepared by solution casting and their water uptake as well as proton conductivity were determined.
AB - A series of new polyimides bearing simultaneously sulfonic acid groups and benzimidazole rings in different proportions have been synthesised by one pot high temperature polycondensation. The composition of the copolymers, as well as the distribution of the ionic sites along the polymer chain, has been changed systematically in order to study their relation with polymer properties. The incorporation of sulfonic side groups in the structure improves the solubility in polar organic solvents. In turn, the presence of sulfonic acid moieties impairs thermal resistance. Membranes based on the synthesised polyimides were prepared by solution casting and their water uptake as well as proton conductivity were determined.
KW - Benzimidazole
KW - Ion-exchange membranes
KW - Sulfonated polyimides
UR - http://www.scopus.com/inward/record.url?scp=48949101493&partnerID=8YFLogxK
U2 - 10.1016/j.polymer.2008.06.048
DO - 10.1016/j.polymer.2008.06.048
M3 - Article
AN - SCOPUS:48949101493
SN - 0032-3861
VL - 49
SP - 3875
EP - 3883
JO - Polymer
JF - Polymer
IS - 18
ER -