Preparation of polystyrene/poly(methyl methacrylate) composite particles having a dent |
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| Authors: | Masayoshi Okubo Naohiko Saito Teruhisa Fujibayashi |
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| Institution: | (1) Graduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan;(2) Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University, Kobe 657-8501, Japan |
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| Abstract: | Nonspherical polystyrene (PS)/poly(methyl methacrylate) (PMMA) composite particles having a dent were prepared by releasing toluene from PS/PMMA/toluene droplets dispersed in a poly(vinyl alcohol) aqueous medium. An ex-centered PS-core/PMMA-shell morphology, in which a part of the PS core contacted with the aqueous medium and toluene partitioned more in the PS core than in the PMMA shell, was formed in the polymers/toluene droplet in the process of phase separation therein with releasing toluene. The volume of the dent became bigger with an increase in the PS content and in the toluene content partitioned in the PS core.Part CCLXI of the series  Studies on Suspension and Emulsion . |
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| Keywords: | Phase separation Hemispherical structure Dent Morphology Particle/medium interface |
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