ORBi: Zune Catherine - New initiator system for the anionic polymerization of (meth)acrylates in toluene. IV. Random copolymerization of (meth)acrylates in toluene initiated by s-Buli ligated by lithium silanolates

Reference : New initiator system for the anionic polymerization of (meth)acrylates in toluene. IV. R...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/6973

Title :	New initiator system for the anionic polymerization of (meth)acrylates in toluene. IV. Random copolymerization of (meth)acrylates in toluene initiated by s-Buli ligated by lithium silanolates
Language :	English
Author, co-author :	Zune, Catherine [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Zundel, Thomas [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Dubois, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Teyssié, Philippe [University of LIège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Jérôme, Robert [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Publication date :	1999
Journal title :	Journal of Polymer Science. Part A, Polymer Chemistry
Publisher :	John Wiley & Sons
Volume :	37
Issue/season :	14
Pages :	2525-2535
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	0887-624X
City :	Hoboken
Keywords :	[en] anionic polymerization
Abstract :	[en] Copolymerization of binary mixtures of alkyl (meth)acrylates has been initiated in toluene by a mixed complex of lithium silanolate (s-BuMe2SiOLi) and s-BuLi (molar ratio > 21) formed in situ by reaction of s-BuLi with hexamethylcyclotrisiloxane (D3). Fully acrylate and methacrylate copolymers, i.e., poly(methyl acrylate-co-n-butyl acrylate), poly(methyl methacrylate-co-ethyl methacrylate), poly(methyl methacrylate-co-n-butyl methacrylate), poly(methyl methacrylate-co-n-butyl methacrylate), poly(isobornyl methacrylate-co-n-butyl methacrylate), poly(isobornyl methacrylate-co-n-butyl methacrylate) of a rather narrow molecular weight distribution have been synthesized. However, copolymerization of alkyl acrylate and methyl methacrylate pairs has completely failed, leading to the selective formation of homopoly(acrylate). As result of the isotactic stereoregulation of the alkyl methacrylate polymerization by the s-BuLi/s-BuMe2SiOLi initiator, highly isotactic random and block copolymers of (alkyl) methacrylates have been prepared and their thermal behavior analyzed. The structure of isotactic poly(ethyl methacrylate-co-methyl methacrylate) copolymers has been analyzed in more detail by Nuclear Magnetic Resonance (NMR).
Research units :	Center for Education and Research on Macromolecules (CERM)
Funders :	Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/6973
DOI :	10.1002/(SICI)1099-0518(19990715)37:14<2525::AID-POLA26>3.0.CO;2-M
Other URL :	http://www3.interscience.wiley.com/cgi-bin/fulltext/62003258/PDFSTART

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