Preparation of asymmetric polymer film by emulsion blend technique |
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Authors: | M. Okubo Y. He K. Ichikawa |
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Affiliation: | (1) Present address: Department of Industrial Chemistry, Faculty of Engineering, Kobe University, Rokko, Nada, Kobe, Japan |
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Abstract: | Two kinds of anionic polymer emulsions, of which particle sizes were greatly different, were blended and then cast on a release-paper at 30 °C. One was poly(butyl acrylate) emulsion, 0.46 n in diameter, produced by emulsifier-free emulsion polymerization, and the other was ethyl acrylate-methyl methacrylate (1/1, mole ratio) copolymer emulsion, 0.02 m in diameter, produced by emulsifier-containing emulsion polymerization. The film produced had asymmetric surface properties: the air-side surface was nontacky and the bottom-side surface was tacky. The forming mechanism is discussed. |
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Keywords: | Polymeremulsion emulsionblend emulsionpolymerization tackiness asymmetricfilm |
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