126422 20241125101138.0 doi 10.1016/j.memsci.2023.121697 sideral 133831 ART-2023-133831 eng Yu, M. CO2 separation using thin film composite membranes of acid-hydrolyzed PIM-1 2023 Access copy available to the general public Unrestricted The polymer of intrinsic microporosity PIM-1 was synthesized with different topologies and negligible network content. A more rapid heating rate from room temperature yielded a predominantly di-substituted PIM-1 (D-PIM-1), whereas a marginally lower heating rate produced a more branched structure (B-PIM-1). Both polymers were acid-hydrolyzed to give carboxylic acid functionalization (cPIM-1), as indicated by FT-IR, 1H NMR, and elemental analysis. Both PIM-1 and cPIM-1 were processed into self-supported membranes and into thin film composite (TFC) membranes on a polyacrylonitrile support. For a 70% hydrolyzed polymer (D-cPIM-1-70%), the initial CO2 permeance reached 7700 GPU, with ideal selectivity of 56 for CO2/N2 and 37 for CO2/CH4. D-PIM-1 and D-cPIM-1-70% showed 85% and 52% CO2 permeance drop after 60 days’ aging, respectively. B-PIM-1, with initial CO2 permeance of 3100 GPU and ideal selectivity of 19 for CO2/N2 and 11 for CO2/CH4, showed only a 65% decrease. Polymer that was both branched and hydrolyzed (B-cPIM-1-73&81%), with CO2 permeance of 3200 GPU and selectivity of 64 for CO2/N2 and 45 for CO2/CH4, showed no decrease of CO2 permeance after 60 days. The branched structure is crucial for reducing membrane aging. Plasticization gave rise to reduced selectivity in mixed gas experiments, but nevertheless TFC membranes prepared from B-cPIM-1-81% were able to concentrate CO2 to 38% from a 10% CO2/90% N2 mixture at 4.8 bar. info:eu-repo/grantAgreement/ES/MICINN/RYC2019-027060-I info:eu-repo/grantAgreement/ES/UZ/LMA-ICTS ELECMI-CIBER-BBN info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 8.4 2023 POLYMER SCIENCE 5 / 95 = 0.053 2023 Q1 T1 ENGINEERING, CHEMICAL 13 / 170 = 0.076 2023 Q1 T1 1.848 2023 Biochemistry 2023 Q1 Physical and Theoretical Chemistry 2023 Q1 Materials Science (miscellaneous) 2023 Q1 Filtration and Separation 2023 Q1 17.1 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Foster, A. B. Alshurafa, M. Luque-Alled, J. M. Universidad de Zaragoza (orcid)0000-0001-5002-7197 Gorgojo, P. Universidad de Zaragoza (orcid)0000-0002-6905-714X Kentish, S. E. Scholes, C. A. Budd, P. M. 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 679 (2023), 121697 [13 pp.] J. membr. sci. JOURNAL OF MEMBRANE SCIENCE 0376-7388 5625596 http://zaguan.unizar.es/record/126422/files/texto_completo.pdf Versión publicada 2523843 http://zaguan.unizar.es/record/126422/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:126422 articulos driver 2024-11-22-12:01:45 ARTICLE