date:Aug 15, 2012
oncentration, inlet air temperature, and drying air flow rate were the factors investigated with respect to encapsulation efficiency using a central composite design.
The resulting microcapsules were evaluated in terms of moisture content, particle size, bulk density, and hygroscopicity.
The optimum operating conditions were found to be: ratio of core to wall material, 1/9; feed solids concentration, 30% (w/w); inlet air temperature, 187C; drying air flow rate, 22.80m3/h. Under these condition