期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 209, 期 9, 页码 957-966出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.200700537
关键词
charge-controlled permeation; crosslinking; encapsulation; microcapsules; permeation
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 CaCO3 microparticles, followed by crosslinking of the PAH layer with GA and core removal in a solution of EDTA with or without PAR 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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