2024-03-28T13:44:29Zhttp://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/219032021-06-23T10:14:56Zcom_10324_1157com_10324_931com_10324_894col_10324_1298
Advances in the design of co-poly(ether-imide) membranes for CO2 separations. Influence of aromatic rigidity on crystallinity, phase segregation and gas transport
Tena Matías, Alberto
Marcos Fernández, Ángel
Viuda, Mónica de la
Palacio Martínez, Laura
Prádanos del Pico, Pedro Lourdes
Lozano, Ángel E.
Abajo, Francisco Javier García de
Hernández Giménez, Antonio
Copoly(ether-imide) membrane
Gas separation
Producción Científica
In our previous works, it was observed a clear relationship between the structure and the
properties for different copoly(ether-imide)s, besides a good relation was found between
SAXS characterization and permeability results. Here, a series of aliphatic aromatic copoly(
ether-imide)s, based on an aromatic diamine (ODA), a diamine terminated poly(ethylene
oxide) (PEO2000) of a molecular weight of 2000 g/mol and different aromatic
dianhydrides (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 with
the increase in the temperature of treatment of the films. In this case, it was observed that
when the proportion of PEO in the copolymer exceeded 50%, the permeability was similar
for 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 at
lower temperatures of treatment. Higher dianhydride rigidity produced better mechanical
properties that were good but decreased a little bit when the percentage of PEO in the samples
increased.
Good permselectivity compromises were attained for the CO2/N2 separation. This work
gives indications on how to design advanced materials for this separation with the increasing
possibilities of controlled structure and properties.
Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA302U13)
2016-12-22T09:02:27Z
2016-12-22T09:02:27Z
2015
info:eu-repo/semantics/article
European Polymer Journal 2015, vol. 62, p. 130–138
0014-3057
http://uvadoc.uva.es/handle/10324/21903
10.1016/j.eurpolymj.2014.11.016
eng
http://www.sciencedirect.com/science/article/pii/S0014305714004017
Attribution-NonCommercial-NoDerivatives 4.0 International
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
application/pdf
Elsevier
https://uvadoc.uva.es/bitstream/10324/21903/6/PREV-08-Eur-Polym-J-62-130-138-2015.pdf.jpg
Hispana
TEXT
http://creativecommons.org/licenses/by-nc-nd/4.0/
UVaDOC. Repositorio Documental de la Universidad de Valladolid
http://uvadoc.uva.es/handle/10324/21903