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The functionalized imidazolium acetate with two hydroxyl and amine end groups were prepared by simple method for glycolysis and amidolysis PET to produce water soluble oligomers during short reaction time at 180 \u00b0C.\n                    <jats:sup>1<\/jats:sup>\n                    HNMR analysis was used to determine the functionality and molecular weight of recycled PET oligomers with 1,3-bis(2-hydroxyethyl)-1H-imidazol-3-ium acetate ionic liquid (HIIL) and 1,3-bis(3-aminopropyl)-1H-imidazol-3-ium acetate ionic liquid (HIIL) AIIL that were 3565.7 and 1316.23 g.mol\n                    <jats:sup>-1<\/jats:sup>\n                    , respectively. The thermal stability and characteristics prove that the formation of elastic oligomers having higher elasticity for RPET-HIIL\u2009&gt;\u2009RPET-AIIL that have T\n                    <jats:sub>g<\/jats:sub>\n                    values for RPET-HIIL and RPET-AIIL at -69.34 and -48.44 \u00b0C, respectively with disappearance of T\n                    <jats:sub>g<\/jats:sub>\n                    of PET. The CO\n                    <jats:sub>2<\/jats:sub>\n                    absorption capacities at atmospheric pressure confirm that RPET-AIIL and RPET-HIIL absorb more CO\n                    <jats:sub>2<\/jats:sub>\n                    with higher efficiency to about 25.2 mol CO\n                    <jats:sub>2<\/jats:sub>\n                    \/ Kg\n                    <jats:sub>IIL<\/jats:sub>\n                    and desorbs CO\n                    <jats:sub>2<\/jats:sub>\n                    more easily in the short time.\n                  <\/jats:p>","DOI":"10.1038\/s41598-025-15433-7","type":"journal-article","created":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T13:13:14Z","timestamp":1755609194000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["New recycled polyethylene terephthalate imidazolium ionic liquids and their applications for co2 exhaust capture"],"prefix":"10.1038","volume":"15","author":[{"given":"Ayman M.","family":"Atta","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alia A.","family":"Melegy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. 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