Morphology control in polystyrene/poly(methyl methacrylate) composite latex particles |
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| Authors: | Virginia Herrera Rosangela Pirri José M. Asua Jose R. Leiza |
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| Affiliation: | 1. Institute for Polymer Materials and Grupo de Ingeniería Química, Departamento de Química Aplicada, Facultad de Ciencias Químicas;2. University of the Basque Country, Apartado 1072, Donostia–San Sebastián 20080, Spain;3. Groupement de Recherches de Lacq, Arkema, RN 117, BP 34, F-64170 Lacq, France |
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| Abstract: | ![]()
The effect of the presence of different amounts of block copolymers [polystyrene-block-poly(methyl methacrylate)] on the morphology of polystyrene/poly (methyl methacrylate) composite latex particles was investigated. The block copolymers were produced in situ by controlled radical polymerization (CRP) through the addition of the second monomer to a seed prepared by miniemulsion polymerization with a certain amount of a CRP agent. With an increase in the amounts of the block copolymers, the particle morphology changed from a hemisphere morphology (for a latex without block copolymers, i.e., without the use of a CRP agent during the polymerization) to clear core–shell morphologies as a result of decreasing polymer–polymer interfacial tension © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 2484–2493, 2007 |
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| Keywords: | block copolymers controlled radical polymerization emulsion polymerization lattices living polymerization morphology |
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