BALLY, Florence; ISMAILOVA, Esma; BROCHON, Cyril; SERRA, Christophe A.; HADZIIOANNOU, Georges

doi:10.1021/ma2011443

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

BALLY, Florence

ISMAILOVA, Esma

BROCHON, Cyril

Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

Langue

Article de revue

Ce document a été publié dans

Macromolecules. 2011, vol. 44, n° 18, p. 7124-7131

American Chemical Society

Résumé en anglais

Highly branched polymethacrylates have recently offered new perspectives in lithographic performance and drug delivery. The control of branching remains yet challenging and requires fundamental investigation to consider new applications. Therefore, an advanced study of the formation mechanism of branched polymers synthesized by self-condensing vinyl copolymerization (SCVCP) of a methacrylic AB* inimer, 2-(2-bromoisobutyryloxy)ethyl methacrylate (BIEM), with methyl methacrylate (MMA) via atom transfer radical polymerization (ATRP) has been performed. Evidence of branched structures was obtained with a conventional GPC apparatus equipped with a multiangle light scattering detector and detailed (1)H NMR analyses. A three-step reaction scheme is suggested according to the dependence of molecular weight with conversion. Controlled radical polymerization mainly occurs until moderate conversions, with the participation of inimer as chain initiator. Then the polymerization of small macromolecules, through consumption of polymerizable moiety, dramatically increases the molecular weight of polymer. Finally, a loss of control partially due to thermal decomposition of residual comonomers occurs at high conversion. This mechanistic methodology will allow, with adequate reaction process, the one-step preparation of controlled branched macromolecular architectures leading to functional materials.< Réduire

Mots clés en anglais

METHACRYLATE

POLYELECTROLYTES

POLYACRYLATES

CONDENSING VINYL POLYMERIZATION

HYPERBRANCHED POLYMERS

DENDRITIC MACROMOLECULES

DESIGNING DENDRIMERS

MOLECULAR-PARAMETERS

DRUG-DELIVERY

COPOLYMERIZATION

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Mechanistic study of Atom Transfer Radical Polymerization in the Presence of an Inimer: Toward Highly Branched Controlled Macromolecular Architectures through One-Pot Reaction

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Origine

Unités de recherche