English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/162293
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Aromatic poly(ether ether ketone)s capable of crosslinking via UV irradiation to improve gas separation performance

AuthorsPuertas-Bartolomé, María; Dose, M. E.; Bosch, Paula ; Freeman, B. D.; McGrath, J. E.; Riffle, J. S.; Lozano López, Ángel Emilio ; González de la Campa, José; Álvarez, Cristina
Issue Date2017
PublisherRoyal Society of Chemistry (UK)
CitationRSC Advances 7: 55371-55381 (2017)
AbstractThe effect of UV-crosslinking on the gas transport properties of two poly(ether ether ketone)s derived from difluorobenzophenone and two bisphenol derivatives, with four (TMBP-DFB) or six (HMBP-DFB) methyl groups, has been studied. The crosslinking reaction was conducted on dense membranes, using polychromatic light, with wavelengths higher than 350 nm, at room temperature and in presence of air. Both polymers were able to produce crosslinked membranes, with gel fractions close to 75%, but a shorter irradiation time was required for HMBP-DFB. A DFT quantum mechanical study has stated that HMBP-DFB radical formation is much easier than for TMBP-DFB, which would support the fastest kinetics of the crosslinking process for HMBP-DFB. The crosslinked membranes have shown greatly improved gas transport properties, especially for the O2/N2 gas pair, where the Robeson upper bound line of 1991 was clearly surpassed. The improvement in selectivity has been ascribed to the better molecular-sieving characteristics of crosslinked membranes
Publisher version (URL)http://dx.doi.org/10.1039/c7ra11018a
Identifiersdoi: 10.1039/c7ra11018a
issn: 2046-2069
Appears in Collections:(ICTP) Artículos
Files in This Item:
File Description SizeFormat 
RSC Adv. 2017, 7, 55371.pdf1,21 MBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.