Polystyrene-block-poly(butyl acrylate) and polystyrene-block-poly[(butyl acrylate)-co-styrene] block copolymers prepared via controlled free-radical miniemulsion polymerization using degenerative iodine transfer

Farcet, Céline; Lansalot, Muriel; Pirri, Rosangela; Vairon, Jean‐Pierre; Charleux, Bernadette

doi:10.1002/1521-3927(20000801)21:13<921::aid-marc921>3.0.co;2-0

Cited by 48 publications

(40 citation statements)

References 6 publications

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“…[56] Mention also has to be made of PS-PBA and PS-P(BAco-S) block copolymers prepared by Charleux and co-workers [57] by controlled free-radical miniemulsion polymerization using a degenerative iodine transfer, in the presence of perfluorohexyl iodide.…”

Section: ð8þmentioning

confidence: 99%

Block Copolymers in Emulsion and Dispersion Polymerization

Riess

Labbe

2004

Macromol. Rapid Commun.

162

171

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Summary: This article deals with recent progress including the authors' work concerning the application of block copolymers as polymeric surfactants in heterophase polymerizations. The synthesis methods for preparing block copolymers by emulsion and dispersion techniques are outlined, with emphasis on recently developed controlled free radical polymerizations in aqueous media. Specific characteristics of amphiphilic block copolymers are described, for example, micellization and emulsifying effects. A general overview of emulsion and dispersion polymerization in an aqueous and organic medium with ionic and nonionic block copolymers is presented for the preparation of electrosteric and sterically stabilized latex particles. Typical examples of microemulsion, miniemulsion, oil‐in‐oil emulsion, and micellar polymerizations are provided. Current and potential developments of so‐called “hairy latexes”, inverse‐, multiple‐, and solid emulsions, as well as of nonaqueous polymeric dispersions are also discussed.PS foam obtained by free radical polymerization of water‐in‐styrene, stabilized with a PS–PEO diblock copolymer.imagePS foam obtained by free radical polymerization of water‐in‐styrene, stabilized with a PS–PEO diblock copolymer.

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Section: ð8þmentioning

confidence: 99%

Block Copolymers in Emulsion and Dispersion Polymerization

Riess

Labbe

2004

Macromol. Rapid Commun.

162

171

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“…overcome in miniemulsion polymerization of styrene [14][15][16] and seeded emulsion polymerization of butyl acrylate (BuA) [16] where the nucleation step was bypassed.…”

Section: Introductionmentioning

confidence: 99%

Controlled Radical Ab Initio Emulsion Polymerization of n‐Butyl Acrylate by Reverse Iodine Transfer Polymerization (RITP): Effect of the Hydrolytic Disproportionation of Iodine

Tonnar

Lacroix‐Desmazes

Boutevin

2006

Macromol. Rapid Commun.

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Summary: Controlled radical polymerization of n‐butyl acrylate by reverse iodine transfer polymerization (RITP) was achieved in ab initio emulsion polymerization to yield a stable and uncolored latex (particle diameter dp = 106 nm). Hydrolysis of iodine, I2, was responsible for an upward deviation from the targeted molecular weight $\overline M _{{\rm n},{\rm targeted}}$ = 10 400 g · mol−1. The iodide concentration [I−] was followed by an iodide selective electrode and the amount of efficient iodine (33%) was successfully correlated with the experimental molecular weight $\overline M _{{\rm n},{\rm exp}}$ = 31 000 g · mol−1. Finally, a simplified mechanism of RITP in ab initio emulsion polymerization taking into account the iodine hydrolysis was proposed.Evolution of molecular weight and polydispersity index in RITP of BuA in ab initio emulsion.magnified imageEvolution of molecular weight and polydispersity index in RITP of BuA in ab initio emulsion.

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“…[5] Living radical polymerization has been applied to the synthesis of block copolymers in homogeneous systems, [6 -10] but there has been only limited work in heterogeneous systems. Farcet et al [11] prepared polystyrene-block-poly(butyl acrylate) block copolymers in miniemulsion polymerization using degenerative iodine transfer, Krstina et al [12] synthesized poly-(methacrylic ester)s, and Kanagasabapathy et al [13] made triblock copolymers using RAFT in emulsion. Monteiro et al [14] used RAFT in miniemulsion to make acrylate/ styrene block copolymers.…”

Section: Introductionmentioning

confidence: 55%