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Non-aqueous poly(methyl methacrylate) dispersions: Radical dispersion polymerization in the presence of the diblock copolymer poly(styrene -b-methyl methacrylate)

✍ Scribed by J.V. Dawkins; S.A. Shakir; T.G. Croucher

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
203 KB
Volume
23
Category
Article
ISSN
0014-3057

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✦ Synopsis

Poly(methyl methacrylate) particles stabilized in cyolohexane by surface layers of polystyrene chains have been produced by radical dispersion polymerization in the presence of the diblock copolymer poly(styrene-_b-methyl methacrylate). The preparation of stabilized particles with a narrow particle size distribution and a mean particle diameter of 0.1~m required a diblock copolymer concentration of 5% and the incorporation of a seed stage into the dispersion polymerization. The particles retained stability when the dispersion medium was a theta system or better than a theta system for the polystyrene chains. KEY WORDS Dispersion polymerization; poly(methyl methacrylate) particlesl stabilizing polystyrene chains; diblock copolymer; poly(styrene-~methyl methacrylate).

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