Abstract
Polymeric capsules of a rod-like shape were prepared by depositing a poly(methyl methacrylate) or polystyrene thin layer onto the surface of calcium carbonate whisker via emulsion polymerization. The obtained core/shell capsules were also converted to hollow capsules by dissolving the core material in a hydrochloric acid solution. The average thickness of the outer shell (polymer layer) ranged from 29 to 72 nm. The glass transition temperatures Tg’s of the outer shell were almost identical to those of the bulk both for the core/shell and hollow capsules in contrast to the results for ultrathin polymer films, which have been reported to show significantly different Tg from the bulk value.
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Sasaki, T., Kitagawa, T., Sato, S. et al. Core/Shell and Hollow Polymeric Capsules Prepared from Calcium Carbonate Whisker. Polym J 37, 434–438 (2005). https://doi.org/10.1295/polymj.37.434
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DOI: https://doi.org/10.1295/polymj.37.434