131887 20241125101141.0 doi 10.1016/j.mtsust.2023.100593 sideral 137124 ART-2023-137124 eng Pina-Vidal, Cristina Universidad de Zaragoza Sustainable ß- and ¿-cyclodextrins for development of highly permeable thin film composite nanofiltration membranes 2023 Access copy available to the general public Unrestricted The use of macromolecules, such as cyclodextrins (CDs), given their porosity and compatibility with organic materials, are very attractive for the progress of polymeric membranes in nanofiltration (NF) of aqueous dye solutions. Two types of membranes were fabricated. Firstly, β- and γ-CDs were incorporated to polyamide (PA) thin film composite (TFC) membranes. These membranes, named CD/MPD-TMC, were prepared by conventional interfacial polymerization —i.e., an aqueous solution of m-phenylenediamine (MPD) followed by a solution of trimesoyl chloride (TMC) in hexane— by replacing a certain amount of the MPD monomer with varying proportions of CDs. Secondly, two-step double-IP (TD-IP) membranes were fabricated as follows: CDs were deposited atop the polymer support, followed by addition of TMC —forming a polyester (PE) layer—, and subsequently the membrane surface was modified with MPD molecules. In both CD/MPD-TMC and TD-IP membranes, the presence of CDs improved the membrane performance, the latter configuration leading to much higher water permeances. The TD-IP membrane using β-CD achieved the highest water permeance of 10 L m−2 h−1·bar−1 (LMH bar−1) and a rejection of acridine orange dye (265 Da) greater than 98 %. This represents a 6-fold increase in water permeance compared to bare PA (1.6 LMH bar−1). The enhanced water transport was mainly attributed to the more hydrophilic nature of the membranes and the presence of a PE layer with a porous structure and high pore connectivity. High dye rejection resulted from electrostatic and Donnan repulsions due to surface modification with MPD molecules. info:eu-repo/grantAgreement/ES/DGA-FSE/T43-20R info:eu-repo/grantAgreement/ES/DGA/T68-23R info:eu-repo/grantAgreement/ES/FJC-2021-047822-I info:eu-repo/grantAgreement/ES/MCIN-AEI/PID2019-104009RB-I00-AEI-10.13039-501100011033 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 7.1 2023 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 21 / 91 = 0.231 2023 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 87 / 439 = 0.198 2023 Q1 T1 1.244 2023 Chemistry (miscellaneous) 2023 Q1 Renewable Energy, Sustainability and the Environment 2023 Q1 Materials Science (miscellaneous) 2023 Q1 5.8 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Luque-Alled, Jose Miguel Universidad de Zaragoza (orcid)0000-0001-5002-7197 Coronas, Joaquín Universidad de Zaragoza (orcid)0000-0003-1512-4500 Téllez, Carlos Universidad de Zaragoza (orcid)0000-0002-4954-1188 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 24 (2023), 100593 [12 pp.] Materials Today Sustainability 2589-2347 10228499 http://zaguan.unizar.es/record/131887/files/texto_completo.pdf Versión publicada 2685821 http://zaguan.unizar.es/record/131887/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131887 articulos driver 2024-11-22-12:02:31 ARTICLE