Reference : Anionic polymerization of acrylic monomers. 6. Synthesis, characterization, and modif...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/15944
Anionic polymerization of acrylic monomers. 6. Synthesis, characterization, and modification of poly(methyl methacrylate)-poly(tert-butyl acrylate) di- and triblock copolymers
English
Varshney, Sunil K [University of Liège (ULg) > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis > >]
Jacobs, Christian [University of Liège (ULg) > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis > >]
Hautekeer, Jean-Paul [University of Liège (ULg) > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis > >]
Bayard, Philippe [University of Liège (ULg) > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis > >]
Fayt, Roger [University of Liège (ULg) > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis > >]
Teyssié, Philippe [University of Liège (ULg) > Department of Chemistry > Laboratory of Macromolecular Chemistry and Organic Catalysis > >]
2-Sep-1991
Macromolecules
American Chemical Society
24
18
4997-5000
Yes (verified by ORBi)
International
0024-9297
Washington
DC
[en] anionic polymerization ; (meth)acrylate ; block copolymer
[en] Poly(methyl methacrylate)-b-poly(tert-butyl acrylate) (PMMA-b-PtBA) copolymers have been successfully synthesized by the sequential anionic polymerization of methyl methacrylate (MMA) and tert-butyl acrylate (tBA) in THF at -78-degrees-C. Although the order of monomer addition makes a difference on the initiation efficiency, it has no significant effect on the final achievement. Mono- and bifunctional initiators based on alkali metals can be used. When the initiators are modified by LiCl as a ligand, the polymerization of each block appears to be living, the molecular weight and composition can be predicted, and the molecular weight distribution is narrow. Size exclusion chromatography supports the absence of homo-PtBA in the PtBA-b-PMMA samples. The PtBA blocks can be quantitatively hydrolyzed into polyacid ones as supported by titration and H-1 NMR analysis.
Center for Education and Research on Macromolecules (CERM)
Norsolor, France ; Cipari, Luxembourg ; Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers
http://hdl.handle.net/2268/15944
10.1021/ma00018a003
http://pubs.acs.org/doi/pdf/10.1021/ma00018a003

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