LANSON, David; SCHAPPACHER, Michel; BORSALI, Redouane; DEFFIEUX, Alain

doi:10.1021/ma070

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LANSON, David
Laboratoire de Chimie des polymères organiques [LCPO]

SCHAPPACHER, Michel
Laboratoire de Chimie des polymères organiques [LCPO]

BORSALI, Redouane
Laboratoire de Chimie des polymères organiques [LCPO]

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International Journal of Biological Macromolecules. 2007, vol. 40, n° 15, p. 5559-5565

Elsevier

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Poly(styrene)comb-b-poly(isoprene)comb copolymers having a heterofunctional polyvinyl ether diblock backbone were synthesized by the grafting onto method. Their synthesis involves in a first step the selective coupling reaction of polystyryllithium chains onto the reactive chloroether functions of a poly(chloroethyl vinyl ether) first block while the second block poly(pyranethoxy vinyl ether) remains unchanged, yielding Poly(styrene)comb with a poly(pyranethoxy vinyl ether) tail. In a second step, living polyisoprenyllithium chains are grafted onto the second block previously modified to introduce reactive chlorobutyl functions. The obtained high molar masses PScomb-b-PIcomb copolymers exhibit a low polydispersity and a controlled number of branches. Their characteristics and behavior were further studied as isolated objects using imaging technique such as atomic force microscopy and using light scattering in a good solvent for PS and PI moieties, and in a selective solvent of PIcomb blocks. The PScomb-b-PIcomb copolymers adopt a cylindrical conformation in good solvent and self-assemble in micelles by association of the combPS blocks in heptane.< Leer menos

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CYLINDRICAL BRUSHES

AGGREGATION BEHAVIOR

MOLECULAR BRUSHES

GRAFT-COPOLYMERS

ANIONIC-POLYMERIZATION

TRANSFER RADICAL POLYMERIZATION

BRUSH AMPHIPHILIC COPOLYMERS

COIL BLOCK-COPOLYMERS

ATRP

POLYMERS

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Synthesis of (poly(chloroethyl vinyl ether)-g-polystyrene)comb-b-(poly(chloropyran ethoxy vinyl ether)-g-polyisoprene)comb copolymers and study of hyper-branched micelle formation in dilute solutions

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