(622a) Supercritical Fluid Aided Micro Encapsulation of Powders with Chitosan
AIChE Annual Meeting
2008
2008 Annual Meeting
Engineering Sciences and Fundamentals
Thin Films, Coatings, and Interfacial Phenomena Using Compressible or Supercritical Fluids
Thursday, November 20, 2008 - 8:30am to 8:55am
Sub micron and micron size powders of Titanium dioxide and Calcium oxide are coated in a fluidized bed. The microencapsulation is accomplished using a temperature swing of the bed temperature where the powders are fluidized in the supercritical CO2, DMSO and Chitosan mixture. The analysis using AFM, SEM, TEM, and FTIR confirm uniform coatings of nano scale.
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