{"title":"Liquid crystal polymers containing macroheterocyclic ligands. 4. Synthesis of mesomorphic polymers containing crown ethers by cationic cyclocopolymerization of 1,2-bis(2-ethenyloxyethoxy)benzene with mesogenic vinyl ethers","authors":"R. Rodenhouse, V. Percec, A. E. Feiring","doi":"10.1002/pol.1990.140281105","DOIUrl":null,"url":null,"abstract":"<p>Cationic cyclopolymerization, polymerization and/or cyclocopolymerization of 1,2-bis(2-ethenyloxyethoxy)benzene (DVE), 11- [(4′-cyano-4-biphenyl)oxy]undecanyl vinylether (CVE), and 3 - [2 - (1,2,2- trifluoroethoxy - 2 - (4- methoxy - 4′- (α - methylstilbene)oxy)) - 1 - (trifluorometh - yl)trifluoroethoxy] - 1 - [2-(ethenyloxy)ethoxy]-2,2,3,3-tetrafluoropropane (MVE) initiated with H<sub>2</sub>O/EtAlCl<sub>2</sub>/S(CH<sub>3</sub>)<sub>2</sub> lead to polymers and copolymers with narrow molecular weight distribution. Poly (DVE) is amorphous, while poly(CVE) and poly(MVE) display a S<sub>A</sub> and crystalline mesophase. The poly(DVE-co-MVE)s are amorphous. Poly(DVE-co-CVE)s containing 50 mol % and above of CVE structural units displays a S<sub>A</sub> mesophase.</p>","PeriodicalId":100825,"journal":{"name":"Journal of Polymer Science Part C: Polymer Letters","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/pol.1990.140281105","citationCount":"34","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymer Science Part C: Polymer Letters","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/pol.1990.140281105","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 34
Abstract
Cationic cyclopolymerization, polymerization and/or cyclocopolymerization of 1,2-bis(2-ethenyloxyethoxy)benzene (DVE), 11- [(4′-cyano-4-biphenyl)oxy]undecanyl vinylether (CVE), and 3 - [2 - (1,2,2- trifluoroethoxy - 2 - (4- methoxy - 4′- (α - methylstilbene)oxy)) - 1 - (trifluorometh - yl)trifluoroethoxy] - 1 - [2-(ethenyloxy)ethoxy]-2,2,3,3-tetrafluoropropane (MVE) initiated with H2O/EtAlCl2/S(CH3)2 lead to polymers and copolymers with narrow molecular weight distribution. Poly (DVE) is amorphous, while poly(CVE) and poly(MVE) display a SA and crystalline mesophase. The poly(DVE-co-MVE)s are amorphous. Poly(DVE-co-CVE)s containing 50 mol % and above of CVE structural units displays a SA mesophase.
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