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Membrane-based methods provide a more sustainable and energy-efficient solution, offering high selectivity and lower operational costs than conventional, energy-intensive methods such as cryogenic distillation. The present study explores the dispersion of the aqueous-media synthesized zeolitic imidazolate frameworks (ZIF-8, ZIF-67, and ZIF-8-67) into a Tr\u00f6ger\u2019s base polymer of intrinsic microporosity (PIM-EA(Me2)-TB) to form mixed matrix membranes (MMMs), which are investigated for the efficient separation of C3H6\/C3H8, as well as other light gases. At 20 wt % ZIF loading, the MMMs demonstrate a significant performance enhancement when compared to the neat membrane. The incorporation of ZIFs increases the ideal selectivity for propene\/propane separation, with ZIF-67 achieving the highest value (17). Notably, the ZIF-8-67-based MMM shows a comparable C3H6\/C3H8 selectivity to that of the ZIF-67-based MMMs, but with the smallest reduction in propene permeability, from about 4000 to 2000 Barrer, among all formulations. The ZIF\/PIM-EA(Me2)-TB MMMs, particularly the bimetallic-containing one, showed a promising propene\/propane selective performance and surpassed the 2020 C3H6\/C3H8 upper bound by hitting 15. These findings suggest that ZIF\/PIM-EA(Me2)-TB MMMs provide an effective approach for challenging gas separations and offer a promising solution for industrial applications in gas purification and separation processes. A good fit of the C3H6 and C3H8 permeation data with the modified Maxwell model suggests matrix rigidification, which translates into antiplasticization for these highly soluble gases.<\/jats:p>","DOI":"10.1021\/acsami.6c06687","type":"journal-article","created":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T12:07:04Z","timestamp":1785931624000},"page":"48054-48064","source":"Crossref","is-referenced-by-count":0,"title":["Strong Hints of Antiplasticization by Multivariate ZIF-8-67 in PIM-EA(Me2)-TB-Based Mixed-Matrix Membranes for Propene\/Propane Separation"],"prefix":"10.1021","volume":"18","author":[{"given":"Pegah","family":"Hajivand","sequence":"first","affiliation":[{"name":"National Research Council of Italy - Institute on Membrane Technology \u201cEnrico Drioli\u201d (CNR-ITM) , , ,","place":["Rende, CS, Italy, 87036"]},{"name":"Universit\u00e0 della Calabria , , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elisa","family":"Esposito","sequence":"additional","affiliation":[{"name":"National Research Council of Italy - Institute on Membrane Technology \u201cEnrico Drioli\u201d (CNR-ITM) , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariagiulia","family":"Longo","sequence":"additional","affiliation":[{"name":"National Research Council of Italy - Institute on Membrane Technology \u201cEnrico Drioli\u201d (CNR-ITM) , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcello","family":"Monteleone","sequence":"additional","affiliation":[{"name":"National Research Council of Italy - Institute on Membrane Technology \u201cEnrico Drioli\u201d (CNR-ITM) , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8355-0141","authenticated-orcid":true,"given":"Alessio","family":"Fuoco","sequence":"additional","affiliation":[{"name":"National Research Council of Italy - Institute on Membrane Technology \u201cEnrico Drioli\u201d (CNR-ITM) , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Teresa F.","family":"Mastropietro","sequence":"additional","affiliation":[{"name":"Universit\u00e0 della Calabria , , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8502-8074","authenticated-orcid":true,"given":"Donatella","family":"Armentano","sequence":"additional","affiliation":[{"name":"Universit\u00e0 della Calabria , , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0718-6971","authenticated-orcid":true,"given":"Mariolino","family":"Carta","sequence":"additional","affiliation":[{"name":"Universidad de Zaragoza-CSIC , , ,","place":["Zaragoza, Spain, 50009"]},{"name":"Swansea University , , ,","place":["Swansea, U.K., SA2 8PP"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6918-8281","authenticated-orcid":true,"given":"C. Grazia","family":"Bezzu","sequence":"additional","affiliation":[{"name":"Swansea University , , ,","place":["Swansea, U.K., SA2 8PP"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4538-6851","authenticated-orcid":true,"given":"Johannes C.","family":"Jansen","sequence":"additional","affiliation":[{"name":"National Research Council of Italy - Institute on Membrane Technology \u201cEnrico Drioli\u201d (CNR-ITM) , , ,","place":["Rende, CS, Italy, 87036"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,7,24]]},"reference":[{"issue":"7600","key":"2026092217065439700_cit1","doi-asserted-by":"publisher","first-page":"435","DOI":"10.1038\/532435a","article-title":"Seven Chemical Separations to Change the World","volume":"532","author":"Sholl","year":"2016","journal-title":"Nature"},{"issue":"12","key":"2026092217065439700_cit2","doi-asserted-by":"publisher","first-page":"4366","DOI":"10.1021\/acs.iecr.7b04169","article-title":"Economic Estimation of Various Membranes and Distillation for Propylene and Propane Separation","volume":"57","author":"Amedi","year":"2018","journal-title":"Ind. 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