RT info:eu-repo/semantics/article
T1 Advances in the design of co-poly(ether-imide) membranes for CO2 separations. Influence of aromatic rigidity on crystallinity, phase segregation and gas transport
A1 Tena Matias, Alberto
A1 Marcos Fernández, Ángel
A1 Viuda, Mónica de la
A1 Palacio Martínez, Laura
A1 Prádanos del Pico, Pedro Lourdes
A1 Lozano, Ángel E.
A1 Abajo, Francisco Javier García de
A1 Hernández Giménez, Antonio
K1 Copoly(ether-imide) membrane
K1 Gas separation
AB In our previous works, it was observed a clear relationship between the structure and theproperties for different copoly(ether-imide)s, besides a good relation was found betweenSAXS characterization and permeability results. Here, a series of aliphatic aromatic copoly(ether-imide)s, based on an aromatic diamine (ODA), a diamine terminated poly(ethyleneoxide) (PEO2000) of a molecular weight of 2000 g/mol and different aromaticdianhydrides (BPDA, BKDA (or BTDA) and PMDA) has been synthesized and characterized.The permeability for O2, N2, CO2 and CH4, increased with the rigidity of the monomers(BKDA < BPDA < PMDA), with the amount of PEO2000 in the copolymers, as well as withthe increase in the temperature of treatment of the films. In this case, it was observed thatwhen the proportion of PEO in the copolymer exceeded 50%, the permeability was similarfor all samples, and the aromatic portion had no significant influence.Attending to glass transition temperature, Tg, of the aliphatic part, to its melting temperature,Tm, and to its crystallinity, segregation was better for more rigid dianhydrides atlower temperatures of treatment. Higher dianhydride rigidity produced better mechanicalproperties that were good but decreased a little bit when the percentage of PEO in the samplesincreased.Good permselectivity compromises were attained for the CO2/N2 separation. This workgives indications on how to design advanced materials for this separation with the increasingpossibilities of controlled structure and properties.
PB Elsevier
SN 0014-3057
YR 2015
FD 2015
LK http://uvadoc.uva.es/handle/10324/21903
UL http://uvadoc.uva.es/handle/10324/21903
LA eng
NO European Polymer Journal 2015, vol.  62, p. 130–138
NO Producción Científica
DS UVaDOC
RD 27-nov-2024