000160907 001__ 160907
000160907 005__ 20251017144615.0
000160907 0247_ $$2doi$$a10.1016/j.jece.2025.116893
000160907 0248_ $$2sideral$$a144073
000160907 037__ $$aART-2025-144073
000160907 041__ $$aeng
000160907 100__ $$0(orcid)0000-0003-4789-4649$$aMartínez-Visus, Íñigo$$uUniversidad de Zaragoza
000160907 245__ $$aStudy for CO2 separation with poly(ethylene oxide terephthalate)-poly(butylene terephthalate) multiblock copolymer membranes: Approaching a greener solvent preparation
000160907 260__ $$c2025
000160907 5060_ $$aAccess copy available to the general public$$fUnrestricted
000160907 5203_ $$aGreen solvent alternatives for the multiblock copolymer PolyActive™ were selected to test their effectiveness in membrane fabrication for gas separation. Solubility tests were conducted to assess the solvent-polymer compatibility, followed by membrane fabrication using a drop casting-solution method. Ethyl lactate was identified as a potential greener solvent, compared to more commonly used solvents like chloroform and tetrahydrofuran, as it maintained the membrane conformation, thermal and chemical stability, and thermal degradation characteristics as demonstrated by membrane characterization using SEM, FTIR, TGA and DSC. Single gas transport parameters (permeability, diffusivity and solubility) for N2, H2, CH4, He and CO2 were obtained via the time-lag method for the prepared membranes. A temperature dependence study was conducted in the 25–70 °C range, calculating activation energies for gas transport properties and ideal selectivities. Mixed gas measurements were also performed, comparing separation selectivities to those (ideal selectivities) obtained in single gas, indicating a potential competitive adsorption effect between less permeable species, leading to more selective separation in gas mixture. Membranes prepared with different polymer concentrations (1, 2 and 5 wt%) in ethyl lactate achieve a CO2/N2 ideal selectivity of up to 50.4 at a CO2 permeability of 179 Barrer. This enhanced performance was attributed to ethyl lactate higher boiling point, resulting in a more densely packed polymer structure as reflected by the higher crystallinity and lower fractional free volume measured through XRD, DSC and pycnometry analyses.
000160907 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T68-23R$$9info:eu-repo/grantAgreement/ES/MICINN PRE2020-092006$$9info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/MICIU/PID2019-104009RB-I00$$9info:eu-repo/grantAgreement/ES/MICIU/PID2022-138582OB-I00
000160907 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000160907 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000160907 700__ $$0(orcid)0000-0002-4954-1188$$aTéllez, Carlos$$uUniversidad de Zaragoza
000160907 700__ $$0(orcid)0000-0003-1512-4500$$aCoronas, Joaquín$$uUniversidad de Zaragoza
000160907 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000160907 773__ $$g13, 3 (2025), 116893 [14 pp.]$$pJ. env. chem. eng.$$tJournal of Environmental Chemical Engineering$$x2213-3437
000160907 8564_ $$s2640191$$uhttps://zaguan.unizar.es/record/160907/files/texto_completo.pdf$$yVersión publicada
000160907 8564_ $$s2563166$$uhttps://zaguan.unizar.es/record/160907/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000160907 909CO $$ooai:zaguan.unizar.es:160907$$particulos$$pdriver
000160907 951__ $$a2025-10-17-14:18:57
000160907 980__ $$aARTICLE