Abstract
Submicron-sized styrene-methacrylic acid copolymer particles, which were produced by emulsion copolymerization, were changed to those having multihollow structure by treating stepwise the emulsion as follows. First alkali treatment was carried out at higher temperature than the glass transition temperature and subsequently the emulsion was cooled by keeping it at room temperature. This was named “alkali/cooling method”. The effects of methacrylic acid content, pH, time and temperature in the alkali treatment on the formation of multihollow structure were clarified.
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Part CLV of the series “Studies on suspension and emulsion”
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Okubo, M., Ito, A. & Kanenobu, T. Production of submicron-sized multihollow polymer particles by alkali/cooling method. Colloid Polym Sci 274, 801–804 (1996). https://doi.org/10.1007/BF00654677
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DOI: https://doi.org/10.1007/BF00654677