000086139 001__ 86139 000086139 005__ 20200716101547.0 000086139 0247_ $$2doi$$a10.1098/rsos.190866 000086139 0248_ $$2sideral$$a114915 000086139 037__ $$aART-2019-114915 000086139 041__ $$aeng 000086139 100__ $$0(orcid)0000-0002-0990-0422$$aMartinez-Izquierdo, Lidia$$uUniversidad de Zaragoza 000086139 245__ $$aPoly(ether-block-amide) copolymer membrane for CO2/N-2 separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance 000086139 260__ $$c2019 000086139 5060_ $$aAccess copy available to the general public$$fUnrestricted 000086139 5203_ $$aThe present work is focused on the study of the effect that the casting solution concentration has on the morphology and gas separation performance of poly(ether-block-amide) copolymer membranes (Pebax (R) MH 1657). With this aim, three different concentrations of Pebax (R) MH 1657 in the casting solution (1, 3 and 5 wt%) were used to prepare dense membranes with a thickness of 40 mu m. The morphology and thermal stability of all membranes were characterized by scanning electron microscopy, X-ray diffraction, differential scanning calorimetry, rotational viscometry and thermogravimetric analyses. An increase in crystallinity was notable when the amount of solvent in the Pebax (R) MH 1657 solution was higher, mainly related to the polymer chains arrangement and the solvent evaporation time. Such characteristic seemed to play a key role in the thermal degradation of the membranes, confirming that the most crystalline materials tend to be thermally more stable than those with lower crystallinity. To study the influence of their morphology and operating temperature on the CO2 separation, gas separation tests were conducted with the gas mixture CO2/N-2. Results indicated that a compromise must be found between the amount of solvent used to prepare the membranes and the crystallinity, in order to reach the best gas separation performance. In this study, the best performance was achieved with the membrane prepared from a 3 wt% casting solution, reaching at 35 degrees C and under a feed pressure of 3 bar, a CO2 permeability of 110 Barrer and a CO2/N-2 selectivity of 36. 000086139 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T43-17R$$9info:eu-repo/grantAgreement/EC/H2020/760944/EU/Advanced MEMBranes and membrane assisted procEsses for pre- and post- combustion CO2 captuRe/MEMBER$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 760944-MEMBER$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-77290-R 000086139 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000086139 590__ $$a2.647$$b2019 000086139 591__ $$aMULTIDISCIPLINARY SCIENCES$$b28 / 71 = 0.394$$c2019$$dQ2$$eT2 000086139 592__ $$a0.966$$b2019 000086139 593__ $$aMultidisciplinary$$c2019$$dQ1 000086139 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000086139 700__ $$0(orcid)0000-0001-9595-0831$$aMalankowska, Magdalena$$uUniversidad de Zaragoza 000086139 700__ $$0(orcid)0000-0001-6627-0079$$aSanchez-Lainez, Javier$$uUniversidad de Zaragoza 000086139 700__ $$0(orcid)0000-0002-4954-1188$$aTellez, Carlos$$uUniversidad de Zaragoza 000086139 700__ $$0(orcid)0000-0003-1512-4500$$aCoronas, Joaquín$$uUniversidad de Zaragoza 000086139 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química 000086139 773__ $$g6, 9 (2019), 190866 [11 pp.]$$pR. Soc. open sci.$$tRoyal Society Open Science$$x2054-5703 000086139 8564_ $$s771078$$uhttps://zaguan.unizar.es/record/86139/files/texto_completo.pdf$$yVersión publicada 000086139 8564_ $$s81003$$uhttps://zaguan.unizar.es/record/86139/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000086139 909CO $$ooai:zaguan.unizar.es:86139$$particulos$$pdriver 000086139 951__ $$a2020-07-16-09:43:35 000086139 980__ $$aARTICLE