{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T13:24:11Z","timestamp":1787318651063,"version":"build-2736575974"},"reference-count":52,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2025,12,25]],"date-time":"2025-12-25T00:00:00Z","timestamp":1766620800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"DGAPA-UNAM PAPIIT","award":["IN105525"],"award-info":[{"award-number":["IN105525"]}]},{"name":"SECIHTI","award":["CBF-2025-I-2226"],"award-info":[{"award-number":["CBF-2025-I-2226"]}]},{"name":"Ministerio de Ciencia, Innovaci\u00f3n y Universidades","award":["PID2019-108552GB-100"],"award-info":[{"award-number":["PID2019-108552GB-100"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>This work reports on the synthesis and ring-opening metathesis polymerization (ROMP) of two novel homologous sulfonyl-containing norbornene dicarboximide monomers, specifically, N-4-(trifluoromethylsulfonyl)phenyl-norbornene-5,6-dicarboximide (1a) and N-4-(trifluoromethylsulfonyl)phenyl-7-oxanorbornene-5,6-dicarboximide (1b) using the Grubbs 2nd generation catalyst (I). The polymers are thoroughly characterized by nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FT-IR), thermomechanical analysis (TMA), thermogravimetric analysis (TGA), atomic force microscopy (AFM), and X-ray diffraction (XRD), among other techniques. A comparative study of gas transport in membranes based on these ROMP-prepared polymers is performed and the gases studied are hydrogen, oxygen, nitrogen, carbon dioxide, methane, ethylene and propylene. It is found that the presence of sulfonyl pendant groups in the polymer backbone increases the gas permselectivity in slight detriment of the gas permeability compared to a polynorbornene dicarboximide lacking sulfonyl groups. The membrane of the sulfonyl-containing polymer with an oxygen heteroatom in the cyclopentane ring, 2b, is also found to have one of the largest permselectivity coefficients reported to date for the separation of H2\/C3H6 in glassy polynorbornene dicarboximides.<\/jats:p>","DOI":"10.3390\/polym18010062","type":"journal-article","created":{"date-parts":[[2025,12,26]],"date-time":"2025-12-26T02:07:58Z","timestamp":1766714878000},"page":"62","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Synthesis and Gas Permeability of Polynorbornene Dicarboximides Bearing Sulfonyl Moieties"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1802-7944","authenticated-orcid":false,"given":"Alejandro","family":"Onchi","sequence":"first","affiliation":[{"name":"Instituto de Investigaciones en Materiales, Unidad Morelia, Universidad Nacional Aut\u00f3noma de M\u00e9xico, Antigua Carretera a P\u00e1tzcuaro No. 8701, Col. Ex Hacienda de San Jos\u00e9 de la Huerta, Morelia C.P. 58190, Michoac\u00e1n, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-5373-5638","authenticated-orcid":false,"given":"Lisandra","family":"Rubio-Rangel","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones en Materiales, Unidad Morelia, Universidad Nacional Aut\u00f3noma de M\u00e9xico, Antigua Carretera a P\u00e1tzcuaro No. 8701, Col. Ex Hacienda de San Jos\u00e9 de la Huerta, Morelia C.P. 58190, Michoac\u00e1n, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4020-9936","authenticated-orcid":false,"given":"Arlette A.","family":"Santiago","sequence":"additional","affiliation":[{"name":"Escuela Nacional de Estudios Superiores, Unidad Morelia, Universidad Nacional Aut\u00f3noma de M\u00e9xico, Antigua Carretera a P\u00e1tzcuaro No. 8701, Col. Ex Hacienda de San Jos\u00e9 de la Huerta, Morelia C.P. 58190, Michoac\u00e1n, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brian Omar","family":"Mar\u00edn-M\u00e9ndez","sequence":"additional","affiliation":[{"name":"Facultad de Ingenier\u00eda Qu\u00edmica, Universidad Michoacana de San Nicol\u00e1s de Hidalgo, General Francisco J. M\u00fagica s\/n, Morelia C.P. 58060, Michoac\u00e1n, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8813-581X","authenticated-orcid":false,"given":"Mar","family":"L\u00f3pez-Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda de Pol\u00edmeros (ICTP-CSIC), Juan de la Cierva, 3, 28006 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9227-8354","authenticated-orcid":false,"given":"Joel","family":"Vargas","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones en Materiales, Unidad Morelia, Universidad Nacional Aut\u00f3noma de M\u00e9xico, Antigua Carretera a P\u00e1tzcuaro No. 8701, Col. Ex Hacienda de San Jos\u00e9 de la Huerta, Morelia C.P. 58190, Michoac\u00e1n, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"118953","DOI":"10.1016\/j.envres.2024.118953","article-title":"Recent Advancements in Polyurethane-Based Membranes for Gas Separation","volume":"252","author":"Arshad","year":"2024","journal-title":"Environ. Res."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/0376-7388(94)00141-3","article-title":"Polymers for Gas Separations: The next Decade","volume":"94","author":"Stern","year":"1994","journal-title":"J. Memb. Sci."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Alkandari, S.H., and Castro-Dominguez, B. (2024). Advanced and Sustainable Manufacturing Methods of Polymer-Based Membranes for Gas Separation: A Review. Front. Membr. Sci. 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