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Spray Drying of Polymer-Adsorbed Drug Nanocrystal Particles  

Choi, Ji-Yeun (Department of Nano Science and Technology, Sejong University)
Yoo, Ji Youn (Department of Chemical Engineering and Materials Science, Chung-Ang University)
Kim, Hwan Yong (Department of Nano Science and Technology, Sejong University)
Jung, Sang Young (Department of Nano Science and Technology, Sejong University)
Heo, Yoon Suk (Department of Nano Science and Technology, Sejong University)
Hong, Sung Chul (Department of Nano Science and Technology, Sejong University)
Lee, Jonghwi (Department of Chemical Engineering and Materials Science, Chung-Ang University)
Publication Information
Applied Chemistry for Engineering / v.17, no.1, 2006 , pp. 106-110 More about this Journal
Abstract
If drugs are made from nanoparticles, their formulations can be more effective than the conventional ones. Especially, water insoluble drugs having low absorption rates into our body could show improvement in their adsorption and bioavailability by decreasing their particle sizes to nanometers. In this study, polyvinylpyrrolidone (PVP) and various sugars were employed as stabilizers for the nanoparticles of a water insoluble drug, Itraconazole. Nanoparticles were successfully produced by the wet slurry process for five days. Then, spray drying converted the aqueous dispersions into dry powders, and the redispersibility of dried nanoparticles into water was investigated. The effects of temperature, pressure, and flow rate were studied to understand the importance of processing variables on redispersibility. It was found in particle size analysis that nanoparticles containing sugars have better redispersibility than those without sugars. Additionally, the mainly spherical morphology of dried nanoparticles was identified by SEM (Scanning Electron Microscopy) and AFM (Atomic Force Microscopy).
Keywords
nanoparticle; stabilizer; water insoluble drug; redispersibility; ltraconazole; polyvinylpyrrolidone;
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Times Cited By KSCI : 3  (Citation Analysis)
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