Miniemulsion Polymerization Stabilized by a Well-Defined, Amphiphilic Gradient Poly(styrene-co-acrylic acid) Copolymer

Catherine Lefay; Maud Save; Bernadette Charleux; Stéphanie Magnet

doi:10.1071/ch06146

journal article Sep 08, 2006

Miniemulsion Polymerization Stabilized by a Well-Defined, Amphiphilic Gradient Poly(styrene-co-acrylic acid) Copolymer

Catherine Lefay

Maud Save Bernadette Charleux Stéphanie Magnet

Australian Journal of Chemistry Vol. 59 No. 8 pp. 544-548 · CSIRO Publishing

View at Publisher Save 10.1071/ch06146

Abstract

The nitroxide-mediated controlled free-radical copolymerization of styrene (St) and acrylic acid (AA) was used to synthesize a well-defined poly(St30%-co-AA70%) amphiphilic gradient copolymer. The latter proved to be an efficient stabilizer in the 45 wt.-% solids content, batch miniemulsion polymerizations of St and of mixtures of methyl methacrylate/n-butyl acrylate (35/65 w/w). With 2,2´-azobisisobutyronitrile as an oil-soluble initiator, polystyrene latexes with a very narrow particle distribution were obtained, whereas the water-soluble initiator, potassium persulfate, led to broad, multimodal particle size distributions. Such results were explained by the contribution of two nucleation mechanisms: droplet nucleation and homogeneous nucleation. In contrast, the poly(methyl methacrylate-co-n-butyl acrylate) latexes exhibited larger particle size and narrower particle size distributions with persulfate initiator, than the polystyrene latexes.

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Details

Published: Sep 08, 2006
Vol/Issue: 59(8)
Pages: 544-548
License: View

Authors

C

Catherine Lefay

AUniversité Pierre et Marie Curie—Paris 6, Laboratoire de Chimie des Polymères, UMR 7610 associée au CNRS, 75252 Paris Cedex 05, France.

M

Maud Save

AUniversité Pierre et Marie Curie—Paris 6, Laboratoire de Chimie des Polymères, UMR 7610 associée au CNRS, 75252 Paris Cedex 05, France.

B

Bernadette Charleux

AUniversité Pierre et Marie Curie—Paris 6, Laboratoire de Chimie des Polymères, UMR 7610 associée au CNRS, 75252 Paris Cedex 05, France.; CCorresponding author. Email: charleux@ccr.jussieu.fr

S

Stéphanie Magnet

BARKEMA, Groupement de Recherches de Lacq, B.P. no. 34, 64170 Lacq, France.

Cite This Article

Catherine Lefay, Maud Save, Bernadette Charleux, et al. (2006). Miniemulsion Polymerization Stabilized by a Well-Defined, Amphiphilic Gradient Poly(styrene-co-acrylic acid) Copolymer. Australian Journal of Chemistry, 59(8), 544-548. https://doi.org/10.1071/ch06146

Miniemulsion Polymerization Stabilized by a Well-Defined, Amphiphilic Gradient Poly(styrene-co-acrylic acid) Copolymer

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