Double emulsion templated microcapsules with single hollow cavities and thickness-controllable shells

Fei Gao, Zhi Guo Su, Ping Wang, Guang Hui Ma

Research output: Contribution to journalArticle

81 Scopus citations

Abstract

A novel form of microcapsules, which possess single hollow cavities and thickness-controllable shells, were prepared by a two-step emulsification, emulsion ripening, and suspension polymerization. Parameters on morphology control of water-in-oil-in-water (W/O/W) emulsion globules were particularly investigated in this study, and a universal strategy to prepare single-core water-in-oil (W/O) globules from their multicore precursors was proposed. These single-core globules were further utilized as templates for solid microcapsules by the suspension polymerization, during which the phase-separation mechanism could be employed to form nanochannels across the shells. Such microcapsules could be further exploited as microreactors with functional cores to be loaded and would be especially suitable to encage bioactive materials.

Original languageEnglish (US)
Pages (from-to)3832-3838
Number of pages7
JournalLangmuir
Volume25
Issue number6
DOIs
StatePublished - Mar 17 2009

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