{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T09:20:22Z","timestamp":1768728022679,"version":"3.49.0"},"reference-count":58,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,8,3]],"date-time":"2022-08-03T00:00:00Z","timestamp":1659484800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Scientific Research Projects in Colleges and Universities in Hebei Province","award":["Z2020122"],"award-info":[{"award-number":["Z2020122"]}]},{"name":"Scientific Research Projects in Colleges and Universities in Hebei Province","award":["ZD2019307"],"award-info":[{"award-number":["ZD2019307"]}]},{"name":"Scientific Research Projects in Colleges and Universities in Hebei Province","award":["E2019508214"],"award-info":[{"award-number":["E2019508214"]}]},{"name":"Scientific Research Projects in Colleges and Universities in Hebei Province","award":["B2020508008"],"award-info":[{"award-number":["B2020508008"]}]},{"name":"Scientific Research Projects in Colleges and Universities in Hebei Province","award":["3142019013"],"award-info":[{"award-number":["3142019013"]}]},{"name":"the Natural Science Foundation of Hebei Province of China","award":["Z2020122"],"award-info":[{"award-number":["Z2020122"]}]},{"name":"the Natural Science Foundation of Hebei Province of China","award":["ZD2019307"],"award-info":[{"award-number":["ZD2019307"]}]},{"name":"the Natural Science Foundation of Hebei Province of China","award":["E2019508214"],"award-info":[{"award-number":["E2019508214"]}]},{"name":"the Natural Science Foundation of Hebei Province of China","award":["B2020508008"],"award-info":[{"award-number":["B2020508008"]}]},{"name":"the Natural Science Foundation of Hebei Province of China","award":["3142019013"],"award-info":[{"award-number":["3142019013"]}]},{"name":"the Fundamental Research Funds for the Central Universities","award":["Z2020122"],"award-info":[{"award-number":["Z2020122"]}]},{"name":"the Fundamental Research Funds for the Central Universities","award":["ZD2019307"],"award-info":[{"award-number":["ZD2019307"]}]},{"name":"the Fundamental Research Funds for the Central Universities","award":["E2019508214"],"award-info":[{"award-number":["E2019508214"]}]},{"name":"the Fundamental Research Funds for the Central Universities","award":["B2020508008"],"award-info":[{"award-number":["B2020508008"]}]},{"name":"the Fundamental Research Funds for the Central Universities","award":["3142019013"],"award-info":[{"award-number":["3142019013"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Ionic liquid (IL) as a green solvent is entirely composed of ions; thus, it may be more than a simple solvent for ionic polymerization. Here, the cationic polymerization of p-methylstyrene (p-MeSt) initiated by 1-chloro-1-(4-methylphenyl)-ethane (p-MeStCl)\/tin tetrachloride (SnCl4) was systematically studied in 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([Bmim][NTf2]) IL at \u221225 \u00b0C. The results show that IL did not participate in cationic polymerization, but its ionic environment and high polarity were favorable for the polarization of initiator and monomer and facilitate the controllability. The gel permeation chromatography (GPC) trace of the poly(p-methylstyrene) (poly(p-MeSt)) changes from bimodal in dichloromethane (CH2Cl2) to unimodal in IL, and polydispersities Mw\/Mn of the polymer in IL showed narrower (1.40\u20131.59). The reaction rate and heat release rate were milder in IL. The effects of the initiating system, Lewis acid concentration, and 2,6-di-tert-butylpyridine (DTBP) concentration on the polymerization were investigated. The controlled cationic polymerization initiated by p-MeStCl\/SnCl4 was obtained. The polymerization mechanism of p-MeSt in [Bmim][NTf2] was also proposed.<\/jats:p>","DOI":"10.3390\/polym14153165","type":"journal-article","created":{"date-parts":[[2022,8,3]],"date-time":"2022-08-03T23:33:01Z","timestamp":1659569581000},"page":"3165","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Controlled Cationic Polymerization of p-Methylstyrene in Ionic Liquid and Its Mechanism"],"prefix":"10.3390","volume":"14","author":[{"given":"Xiaoqian","family":"Zhang","sequence":"first","affiliation":[{"name":"Hebei Key Laboratory of Hazardous Chemicals Safety and Control Technology, School of Chemical Safety, North China Institute of Science and Technology, Yanjiao, Beijing 101601, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shengde","family":"Tang","sequence":"additional","affiliation":[{"name":"China National Pulp and Paper Research Institute Co., Ltd., Beijing 100102, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ming","family":"Gao","sequence":"additional","affiliation":[{"name":"Hebei Key Laboratory of Hazardous Chemicals Safety and Control Technology, School of Chemical Safety, North China Institute of Science and Technology, Yanjiao, Beijing 101601, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chunfeng","family":"Sun","sequence":"additional","affiliation":[{"name":"Hebei Key Laboratory of Hazardous Chemicals Safety and Control Technology, School of Chemical Safety, North China Institute of Science and Technology, Yanjiao, Beijing 101601, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiasheng","family":"Wang","sequence":"additional","affiliation":[{"name":"Hebei Key Laboratory of Hazardous Chemicals Safety and Control Technology, School of Chemical Safety, North China Institute of Science and Technology, Yanjiao, Beijing 101601, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"447","DOI":"10.1007\/s10924-011-0287-3","article-title":"Ionic liquids as environmentally friendly solvents in macromolecules chemistry and technology, Part I","volume":"19","author":"Mallakpour","year":"2011","journal-title":"J. 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