MATMOUR, Rachid; LEPOITTEVIN, Bénédicte; JONCHERAY, Thomas J.; EL-KHOURI, Rita J.; TATON, Daniel; DURAN, Randolph S.; GNANOU, Yves

doi:10.1021/ma048097n

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MATMOUR, Rachid
Laboratoire de Chimie des polymères organiques [LCPO]

LEPOITTEVIN, Bénédicte
Laboratoire de Chimie des polymères organiques [LCPO]

JONCHERAY, Thomas J.
Dept Chem and Center for Macromol Sci and Eng, Univ Florida

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International Journal of Biological Macromolecules. 2005, vol. 38, n° 13, p. 5459-5467

Elsevier

Résumé en anglais

The synthesis of well-defined second-generation PS(n)PtBA(2n) dendrimer-like copolymers based on polystyrene (PS) and poly(tert-butylacrylate) (PtBA) is described. The synthetic procedure involves a combination of atom transfer radical polymerization (ATRP) using multifunctional initiators and chain end modification reactions. These structures are composed of a PS core with 2, 4, 6, or 8 arms and a corona of PtBA with 4, 8, 12, or 16 arms, respectively. Third-generation PS(n)PS(2n)PtBA(4n) dendrimer-like copolymers were also derived by repetition of chain end modification and ATRP. Characterization was carried out by size exclusion chromatography online with multiangle laser light scattering and by H-1 NMR spectroscopy. PS(n)PAA(2n) amphiphilic structures based on PS and poly(acrylic acid) (PAA) were subsequently generated by hydrolysis of the tert-butylester groups. Langmuir monolayer studies of PS(n)PtBA(2n) showed the formation of stable films. AFM images demonstrated a significant change in morphology upon increasing surface pressures.< Réduire

Mots clés en anglais

POLY(ACRYLIC ACID)

AGGREGATION BEHAVIOR

BUTYL ACRYLATE

EMULSION POLYMERIZATION

TRANSFER RADICAL POLYMERIZATION

AIR-WATER-INTERFACE

AMPHIPHILIC BLOCK-COPOLYMERS

WELL-DEFINED POLYSTYRENE

DIBLOCK COPOLYMER

MICELLE FORMATION

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Synthesis and investigation of surface properties of dendrimer-like copolymers based on polystyrene and poly(tert-butylacrylate)

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