101516 20211122141545.0 doi 10.1016/j.seppur.2020.116995 sideral 118111 ART-2020-118111 eng Paseta, L. (orcid)0000-0003-2006-1495 Functionalized graphene-based polyamide thin film nanocomposite membranes for organic solvent nanofiltration 2020 Access copy available to the general public Unrestricted This work deals with the use of octadecylamine (ODA)-functionalized reduced graphene oxide (rGO) for thin film nanocomposite (TFN) membranes. The functionalization of rGO with ODA leads to graphene-based nanofillers, more hydrophobic than GO, and thus to the easier dispersion in the organic phase of the interfacial polymerization (IP) reaction carried out to produce polyamide (PA) TFN membranes. The performance of the new TFN membranes is evaluated by organic solvent nanofiltration (OSN) of alcoholic solutions containing dyes Acridine Orange (AO, MW 265 g·mol-1), Sunset Yellow (SY, MW 452 g·mol-1) and Rose Bengal (RB, MW 974 g·mol-1). The functionalized nature of the nanoparticles introduced into the hydrophilic PA layer allows an increase of the ethanol permeance from 2.8, 3.4 and 3.7 L·m-2·h-1·bar-1 for AO, SY and RB, respectively, corresponding to the bare thin film composite membrane (without rGO-ODA particles), to 4.3, 4.6 and 6.0 L·m-2·h-1·bar-1 for AO, SY and RB, respectively, for the rGO-ODA based TFN membrane. In fact, we hypothesize that the increase of the ethanol flux achieved with the use of rGO-ODA as a filler in TFN membranes is owing to a combination of the simultaneous presence of polar and non-polar groups from rGO-ODA nanosheets and the creation of still selective narrow gaps between these particles and the polyamide (PA). info:eu-repo/grantAgreement/ES/DGA-FSE/T43-17R info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/MAT2016-77290-R info:eu-repo/grantAgreement/ES/MINECO/BES-2014-068287 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 7.312 2020 ENGINEERING, CHEMICAL 16 / 143 = 0.112 2020 Q1 T1 1.278 2020 Filtration and Separation 2020 Q1 Analytical Chemistry 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Luque-Alled, J.M. (orcid)0000-0001-5002-7197 Malankowska, M. Universidad de Zaragoza (orcid)0000-0001-9595-0831 Navarro, M. (orcid)0000-0001-7702-9619 Gorgojo, P. (orcid)0000-0002-6905-714X Coronas, J. Universidad de Zaragoza (orcid)0000-0003-1512-4500 Téllez, C. Universidad de Zaragoza (orcid)0000-0002-4954-1188 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 247 (2020), 116995 [9 pp] Sep. Purif. Technol. Separation and Purification Technology 1383-5866 844493 http://zaguan.unizar.es/record/101516/files/texto_completo.pdf Postprint 802149 http://zaguan.unizar.es/record/101516/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:101516 articulos driver 2021-11-22-14:07:43 ARTICLE