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Título

The fabrication of ultrathin films and their gas separation performance from polymers of intrinsic microporosity with two-dimensional (2D) and three-dimensional (3D) chain conformations

AutorBenito, Javier; Vidal, Julio; Sánchez-Laínez, Javier CSIC ORCID; Zornoza, Beatriz CSIC ORCID; Téllez, Carlos CSIC ORCID; Martín, Santiago CSIC ORCID; Msayib, Kadhum J.; Comesaña-Gándara, Bibiana CSIC ORCID; McKeown, Neil B.; Coronas, Joaquín CSIC ORCID; Gascón, Ignacio CSIC ORCID
Palabras claveComposite membranes
Gas separation
Polymer design
Polymers of intrinsic microporosity
Fecha de publicación2019
EditorElsevier
CitaciónJournal of Colloid and Interface Science 536: 474-482 (2019)
ResumenThe expansion of the use of polymeric membranes in gas separation requires the development of membranes based on new polymers with improved properties and their assessment under real operating conditions. In particular, the fabrication of ultrathin films of high performance polymers that can be used as the selective layer in composite membranes will allow large reductions in the amount of the expensive polymer used and, hence, the cost of membrane fabrication. In this contribution, two polymers of intrinsic microporosity (PIMs) with very different chain configurations (two-dimensional, 2D, chains or conventional contorted three-dimensional, 3D, conformation) have been compared in their ability to form ultrathin films, showing the relevance of polymer design to obtain compact and defect-free films. Monolayers of the 2D polymer PIM-TMN-Trip can be efficiently deposited onto poly[1-(trimethylsilyl)-1-propyne] (PTMSP) to obtain composite membranes with a CO2/N2 selectivity similar to that of the corresponding thick membranes of the same PIM using only a small fraction of the selective polymer (less than 0.1%).
Versión del editorhttps://doi.org/10.1016/j.jcis.2018.10.075
URIhttp://hdl.handle.net/10261/181656
DOI10.1016/j.jcis.2018.10.075
ISSN0021-9797
E-ISSN1095-7103
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