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Abstract
In order to develop a film-forming transdermal drug delivery system, polyurethane (PU) based on poly(ethylene glycol) and poly(tetramethylene oxide) was synthesized and characterized. The synthesized PU was blended with Gantrez ES 225 (GT) to improve the adhesion property of film-forming agent to the skin. When film-forming gel formulation containing 3% ketoprofen (KP) was applied, transparent thin film was obtained within 5 minutes and adhered to the skin for 8 hours. In vitro percutaneous absortion studies were performed to determine the rate of ketoprofen absorption through guinea pig skin. A prominent effect of limonene on the skin permeability of ketoprofen was observed among the various skin permeation enhancers investigated. Considering mechanica properties of film and skin permeability of ketoprofen, 2% of limonene was optimal content in the film forming transdermal formulation.
Published Version
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