RT info:eu-repo/semantics/article
T1 Physical properties of films made of copoly(ether-imide)s with long poly(ethylene oxide) segments
A1 Marcos-Fernandez, Angel
A1 Tena Matias, Alberto
A1 Lozano, Angel E.
A1 de la Campa, Jose G.
A1 de Abajo, Javier
A1 Palacio Martínez, Laura
A1 Prádanos del Pico, Pedro Lourdes
A1 Hernández Giménez, Antonio
AB Polyimides having long poly(ethylene oxide), PEO, moieties in the main chain have been synthesized by a classical two-steps polycondensation method with good yield and high molecular weight. In contrast with previous works on this topic, essentially full conversion of the polyamic acid to polyimide was attained by heating at relatively low temperatures (around 160 °C).These copolyimides undergo an increase of phase separation between the PEO part and the polyimide one after a thermal annealing. This phase separation increases gas separation properties of membranes made up of these copolymers. An exhaustive study of polymer properties as a function of the thermal treatment has been carried out in order to figure out the origin of this behavior. The analysis performed included TGA, DSC, SAXS and mechanical testing.The polymers studied in this paper have medium thermal stability. In fact, degradation of the polyether chain under nitrogen takes place at temperatures above 300 °C. However, their thermal stabilities were much lower under oxidant atmosphere.
PB Elsevier
YR 2010
FD 2010
LK https://uvadoc.uva.es/handle/10324/72677
UL https://uvadoc.uva.es/handle/10324/72677
LA eng
NO European Polymer Journal 46 (2010) 2352–2364
NO Producción Científica
DS UVaDOC
RD 04-abr-2025