{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,29]],"date-time":"2025-11-29T16:21:58Z","timestamp":1764433318594,"version":"3.46.0"},"reference-count":47,"publisher":"Wiley","issue":"15","license":[{"start":{"date-parts":[[2025,4,30]],"date-time":"2025-04-30T00:00:00Z","timestamp":1745971200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22172155"],"award-info":[{"award-number":["22172155"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Macromol. Rapid Commun."],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Polyureas (PUas) are versatile polymers with a wide range of applications in areas such as coatings, construction, automotive, and aerospace. The isocyanate index (R index) refers to the molar ratio of the equivalent number of isocyanate groups (\u2500NCO) to the total equivalent number of amino groups (\u2500NH\n                    <jats:sub>2<\/jats:sub>\n                    ) or hydroxyl groups (\u2500OH) in the synthesis of PUas or polyurethanes. The relationship between the R index and material properties is less explored in PUa\u00a0chemistry. Moreover, traditional PUas are thermosets without recyclability or reprocessability, hindering broader industrial adoption. Herein, a series of thermoplastic PUas with excellent mechanical and thermal properties are prepared from a CO\n                    <jats:sub>2<\/jats:sub>\n                    \u2010based oligourea (OUa) and 4,4\u2032\u2010diphenylmethane diisocyanate (MDI) with different R indices (R index = 1, 1.05, 1.11). The R index has a significant impact on the structure and molecular weight of PUas, thereby significantly affecting their mechanical properties and thermal stability. When the R index is 1.05, the synthesized PUa (PUa\u20101.05) exhibits the best overall performance, with high tensile strength of \u224875\u00a0MPa, Young's modulus of \u22481100\u00a0MPa, toughness of \u2248104 MJ\u00b7m\n                    <jats:sup>\u22123<\/jats:sup>\n                    , and great reprocessing capacities. In addition, the PUas possess high thermal stability, with an initial decomposition temperature of 312\u00a0\u00b0C.\n                  <\/jats:p>","DOI":"10.1002\/marc.202500139","type":"journal-article","created":{"date-parts":[[2025,4,30]],"date-time":"2025-04-30T22:19:06Z","timestamp":1746051546000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Thermoplastic Polyureas with Excellent Mechanical Properties Synthesized From CO\n                    <sub>2<\/sub>\n                    \u2010Based Oligourea"],"prefix":"10.1002","volume":"46","author":[{"given":"Hui","family":"Li","sequence":"first","affiliation":[{"name":"State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences  No. 5625 Renmin Rd. Changchun 130022 China"},{"name":"School of Applied Chemistry and Engineering University of Science and Technology of China  No. 96 Jinzhai Rd. Hefei 230026 China"},{"name":"Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences  No. 5625 Renmin Rd. Changchun 130022 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0287-054X","authenticated-orcid":false,"given":"Haiyang","family":"Cheng","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences  No. 5625 Renmin Rd. Changchun 130022 China"},{"name":"School of Applied Chemistry and Engineering University of Science and Technology of China  No. 96 Jinzhai Rd. Hefei 230026 China"},{"name":"Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences  No. 5625 Renmin Rd. Changchun 130022 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fengyu","family":"Zhao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences  No. 5625 Renmin Rd. Changchun 130022 China"},{"name":"School of Applied Chemistry and Engineering University of Science and Technology of China  No. 96 Jinzhai Rd. Hefei 230026 China"},{"name":"Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences  No. 5625 Renmin Rd. 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