Reference : Synthesis and bulk characterization of new P(CB-b-S) diblock copolymers
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/14839
Synthesis and bulk characterization of new P(CB-b-S) diblock copolymers
English
Stone, V. W. [Université catholique de Louvain (UCL) > > Unité de Physique et de Chimie des Hauts Polymères > >]
Jonas, Alain M [Université catholilque de Louvain (UCL) > > Unité de Physique et de Chimie des Hauts Polymères > >]
Legras, Roger [Université catholique de Louvain (UCL) > > Unité de Physique et de Chimie des Hauts Polymères > >]
Dubois, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
15-Jan-1999
Journal of Polymer Science. Part A, Polymer Chemistry
John Wiley & Sons
37
2
233-244
Yes (verified by ORBi)
International
0887-624X
Hoboken
[en] diblock copolymer
[en] Strongly asymmetric chlorinated polybutadiene-b-polystyrene, [P((CB)x-b-(PS)y)] diblock copolymers with increasing x/(x + y) ratios (up to 5.2 mol %) have been synthesized by the selective chlorination of the polybutadiene (PB) block in solution. Chlorination has been performed in anhydrous dichloromethane added with an antioxidant [2,2-methylenebis-(6-tert-butyl-4-methyl-phenol)], at -50°C, under a continuous Ar flow and in the dark. Under the optimized experimental conditions, the PB chlorination is not complete, but the PS block is left unmodified. Even in the presence of a large chlorine excess (Cl2/butene unit molar ratio of 2.5), the experimental degree of chlorination of homo PB does not exceed 85%. The chlorinated copolymers have been characterized by 1H-NMR, IR spectroscopy, size-exclusion chromatography, and elemental analysis. The chlorinated copolymers have also been studied by DSC and SAXS after annealing at 150°C. Although at this temperature the parent homopolymers are immiscible, no microphase separation has been observed for the block copolymers.
Center for Education and Research on Macromolecules (CERM)
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers
http://hdl.handle.net/2268/14839
10.1002/(SICI)1099-0518(19990115)37:2<233::AID-POLA13>3.0.CO;2-G
http://www3.interscience.wiley.com/cgi-bin/fulltext/30000764/PDFSTART

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