期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 505, 期 -, 页码 664-672出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.06.026
关键词
Capsules; Silica synthesis; Emulsion templating; Porosity
资金
- South Australian Government Department of State Development
- University of South Australia
Robust silica microcapsules were synthesised using an emulsion template via a seeded growth strategy. Multiple additions of the silica precursor tetraethyl orthosilicate (TEOS) were observed to result in a number of physical and property changes of the capsule shells as compared to a single coating. Scanning electron microscopy indicated a morphological transition from a smooth to a roughened surface. Improved cargo retention and consolidation of the pore structure of the silica shells were observed using dye release experiments and nitrogen porosimetry respectively. In comparison to a typical hollow silica shell synthesis procedure, this one-pot loading and synthesis allows the simple production of robust capsules that are capable of sustained release, using mild conditions and reagents. (C) 2017 Published by Elsevier Inc.
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