Journal
LANGMUIR
Volume 25, Issue 18, Pages 10515-10522Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la901243m
Keywords
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Funding
- Department of Science and Technology, India
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The integration of hydrophobic and hydrophilic drugs in the polymer microcapsule offers the possibility of developing a new drug delivery system that combines the best features of these two distinct classes of material. Recently, we have reported the encapsulation of an uncharged water-insoluble drug in the polymer membrane. The hydrophobic drug is deposited using a layer-by-layer (LbL) technique, which is based on the sequential adsorption of oppositely charged polyelectrolytes onto a charged substrate. In this paper, we report the encapsulation of two different drugs, which are invariably different in structure and in their solubility in water. We have characterized these dual drug vehicular capsules by confocal laser scanning microscopy, atomic force microscopy, visible microscopy, and transmission electron microscopy. The growth of a thin film on a flat substrate by LbL was monitored by UV-vis spectra. The desorption kinetics of two drugs from the thin Film was modeled by a second-order rate model.
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