In Situ Coacervated Microcapsules with Filled Polyelectrolytes and Charge-Controlled Permeation for Dye Molecules
✍ Scribed by Feng Wang; Weijun Tong; Jun Li; Changyou Gao
- Book ID
- 102484729
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 446 KB
- Volume
- 209
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
Microcapsules with charge‐controlled permeation for electrolytes were fabricated by an in situ coacervation method in the presence of polyelectrolyte during core removal. A layer of PAH was adsorbed onto PSS‐doped CaCO~3~ microparticles, followed by crosslinking of the PAH layer with GA and core removal in a solution of EDTA with or without PAH. In the presence of PAH, microcapsules with a larger size, weight and PSS content than with PAH were obtained. Microcapsules produces without PAH showed a unique feature of charge‐controlled permeation for electrolytes: negatively charged probes were completely rejected, but positively charged ones were attracted.
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