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Abstract
The objective of this study is to develop a new textile-based drug delivery system containing naproxen (NAP) microparticles and to evaluate the potential of the system as the carrier of NAP for topical delivery. Microparticles were prepared by spray-drying using an aqueous ethyl cellulose dispersion. The drug content and entrapment efficiency, particle size and distribution, particle morphology and in vitro drug release characteristics of microparticles were optimized for the application of microparticles onto the textile fabrics. Microparticles had spherical shape in the range of 10–15 μm and a narrow particle size distribution. NAP encapsulated in microparticles was in the amorphous or partially crystalline nature. Microparticles were tightly fixed onto the textile fabrics. In vitro drug release exhibited biphasic release profile with an initial burst followed by a very slow release. Skin permeation profiles were observed to follow near zero-order release kinetics.
Acknowledgements
The authors would like to thank Prof. Dr. Ufuk Yücel, Ege Vocational Training School, Ege University, for allowing to the use of spray-drying equipment. Some parts of the study were presented as posters at the 18th International Symposium on Microencapsulation, Antalya, Turkey, 12–14 September 2011 and at the 16th IPTS, Antalya, Turkey, 10–12 September 2012.