マイクロカプセル化技術によるアルミナバルーンの合成

概要

論文の詳細を見る
The synthesis of alumina balloons using the microcapsulation method has been investigated, and was successful in producing a transparent balloon with a diameter of 50-80 μm and a wall thickness of less than 1 μm. The process is as follows. 10 mass% solution of polystyrene in toluene and boehmite sols of approximately 1 mol/kg concentration are mixed by a homogenizer. The resultant W/O emulsion is redispersed in water to obtain a(W/O)W emulsion which produces boehmite sols encapsulated by polystyrene in water. After keeping it for 2 days at 40℃, the products are filtered, dried and then the polystyrene crust is dissolved by toluene. The resultant balloon precursors of boehmite sols are dried, fired and then the alumina balloons are obtained. In this paper, the effects of the concentration of polystyrene or boehmite sols and the addition of ethylene glycol or tricresyl phosphate on the formation of alumina balloons were discussed in detail.
社団法人日本セラミックス協会の論文
1998-01-01