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Rapid Commun."],"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A series of poly(ethylene glycol)<jats:italic>\u2010block<\/jats:italic>\u2010poly(propylene glycol) (PEG\/PPG)\u2010 and 5,6\u2010di(9H\u2010carbazol\u20109\u2010yl)isoindoline\u20101,3\u2010dione (2CZPImide)\u2010based crosslinked rubbery polymer membranes, denoted as PEG\/PPG\u20102CZPImide (x:y), are prepared from the norbornene\u2010functionalized PEG\/PPG oligomer (NB\u2010PEG\/PPG\u2010NB) and 2\u2010(bicyclo[2.2.1]hept\u20105\u2010en\u20102\u2010ylmethyl)\u20105,6\u2010di(9H\u2010carbazol\u20109\u2010yl)isoindoline\u20101,3\u2010dione (2CZPImide\u2010NB) via ring\u2010opening metathesis polymerization (ROMP). The molar ratio (x:y) of the NB\u2010PEG\/PPG\u2010NB (x) to 2CZPImide\u2010NB (y) monomers is varied from 10:1 to 6:1. X\u2010ray diffraction (XRD), scanning electron microscopy\u2010energy dispersive X\u2010ray spectroscopy (SEM\u2010EDS), and pure gas permeability studies reveal that the comonomer 2CZPImide\u2010NB successfully increases the <jats:italic>d<\/jats:italic>\u2010spacing among the crystalline PEG\/PPG segments, hence enhancing the diffusivity of gases through the membranes. The synthesized membranes exhibit good CO<jats:sub>2<\/jats:sub> separation performance, with CO<jats:sub>2<\/jats:sub> permeabilities ranging from 311.1 to 418.1 Barrer and CO<jats:sub>2<\/jats:sub>\/N<jats:sub>2<\/jats:sub> and CO<jats:sub>2<\/jats:sub>\/CH<jats:sub>4<\/jats:sub> selectivities of 39.4\u201352.0 and 13.4\u201316.0, respectively, approaching the 2008 Robeson upper bound. Moreover, PEG\/PPG\u20102CZPImide (6:1), displaying optimal CO<jats:sub>2<\/jats:sub> permeability and CO<jats:sub>2<\/jats:sub>\/N<jats:sub>2<\/jats:sub> and CO<jats:sub>2<\/jats:sub>\/CH<jats:sub>4<\/jats:sub> selectivities, shows long\u2010term stability against physical aging and plasticization resistance up to 20 days and 10 atm, respectively.<\/jats:p>","DOI":"10.1002\/marc.202400296","type":"journal-article","created":{"date-parts":[[2024,7,26]],"date-time":"2024-07-26T12:59:43Z","timestamp":1721998783000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Enhancing CO<sub>2<\/sub> Transport Across the PEG\/PPG\u2010Based Crosslinked Rubbery Polymer Membranes with a Sterically Bulky Carbazole\u2010Based ROMP Comonomer"],"prefix":"10.1002","author":[{"given":"Md. Homayun","family":"Kabir","sequence":"first","affiliation":[{"name":"Organic Material Synthesis Laboratory Department of Chemistry Incheon National University  Incheon 22012 South Korea"},{"name":"Research Institute of Basic Sciences Incheon National University  Incheon 22012 South Korea"},{"name":"Department of Chemistry Pabna University of Science and Technology  Pabna 6600 Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Senthil","family":"Kannan","sequence":"additional","affiliation":[{"name":"Organic Material Synthesis Laboratory Department of Chemistry Incheon National University  Incheon 22012 South Korea"},{"name":"Research Institute of Basic Sciences Incheon National University  Incheon 22012 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kavya Adot","family":"Veetil","sequence":"additional","affiliation":[{"name":"Organic Material Synthesis Laboratory Department of Chemistry Incheon National University  Incheon 22012 South Korea"},{"name":"Research Institute of Basic Sciences Incheon National University  Incheon 22012 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eun Kyu","family":"Sun","sequence":"additional","affiliation":[{"name":"Organic Material Synthesis Laboratory Department of Chemistry Incheon National University  Incheon 22012 South Korea"},{"name":"Research Institute of Basic Sciences Incheon National University  Incheon 22012 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1654-3785","authenticated-orcid":false,"given":"Tae\u2010Hyun","family":"Kim","sequence":"additional","affiliation":[{"name":"Organic Material Synthesis Laboratory Department of Chemistry Incheon National University  Incheon 22012 South Korea"},{"name":"Research Institute of Basic Sciences Incheon National University  Incheon 22012 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,7,26]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.macromol.7b01718"},{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.memsci.2005.12.062"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.3390\/membranes10110365"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.memsci.2021.119244"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/ie071083w"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/3527608788"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.memsci.2008.09.053"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.memsci.2008.04.030"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-021-26379-5"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.adf5087"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.ade1411"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8CS00919H"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5CS00510H"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.seppur.2018.12.008"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.iecr.2c02760"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.iecr.8b05027"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.memsci.2014.05.039"},{"key":"e_1_2_8_18_1","doi-asserted-by":"crossref","first-page":"650","DOI":"10.1002\/cssc.201402677","volume":"8","author":"Chi W. 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