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Xanthate-Mediated Living Radical Polymerization of Vinyl Acetate in Miniemulsion

✍ Scribed by Ryan W. Simms; Thomas P. Davis; Michael F. Cunningham

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
105 KB
Volume
26
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: The MADIX/RAFT mechanism, employing a xanthate as the reversible chain‐transfer agent, has been shown to facilitate the living radical polymerization of vinyl acetate in miniemulsion. Methyl (ethoxycarbonothioyl)sulfanyl acetate (MESA) successfully mediated the polymerization which was initiated with either of the water‐soluble initiators 2,2′‐azobis{2‐[1‐(2‐hydroxyethyl)‐2‐imidazolin‐2‐yl]propane} dihydrochloride (VA‐060) or 2,2′‐azobis[2‐(2‐dimidazolin‐2‐yl)propane] dihydrochloride (VA‐044). The polymerizations exhibit living characteristics, demonstrated by the evolution of molecular weight distributions. The formulation of the miniemulsion produced stable latexes with no coagulum.

The number‐average molecular weight and PDI as a function of monomer conversion for the RAFT miniemulsion polymerization of vinyl acetate.

magnified imageThe number‐average molecular weight and PDI as a function of monomer conversion for the RAFT miniemulsion polymerization of vinyl acetate.

📜 SIMILAR VOLUMES

Xanthate Mediated Living Polymerization
Xanthate Mediated Living Polymerization of Vinyl Acetate: A Systematic Variation in MADIX/RAFT Agent Structure
✍ Martina H. Stenzel; Lyndal Cummins; G. Evan Roberts; Thomas P. Davis; Philipp Va 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 146 KB

## Abstract Eight xanthates were synthesized to induce living free radical polymerization of vinyl acetate. Four compounds, methyl (4‐methoxyphenoxy)carbonothioylsulfanyl acetate, methyl (methoxycarbonothioyl)sulfanyl acetate, methyl (ethoxycarbonothioyl)sulfanyl acetate and methyl (isopropoxycarbo

Cobalt-Mediated Radical Polymerization o
Cobalt-Mediated Radical Polymerization of Vinyl Acetate in Miniemulsion: Very Fast Formation of Stable Poly(vinyl acetate) Latexes at Low Temperature
✍ Christophe Detrembleur; Antoine Debuigne; Rayna Bryaskova; Bernadette Charleux; 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 122 KB

## Abstract **Summary:** Poly(vinyl acetate) macroinitiators end‐capped by a Co(acac)~2~ complex (PVAc–Co(acac)~2~), prepared in bulk by cobalt‐mediated radical polymerization (CMRP), are used for the controlled radical polymerization of vinyl acetate in miniemulsion to give high‐molecular‐weight p