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정은일,정순용 한국공업화학회 2002 응용화학 Vol.6 No.2
Wasted hydrofluosilicic acid is reacted with water glass in order to obtain pure silica. also, Na-magadiite is synthesited using this pure silica at optimized conditions. Synthetic Na-magadiite is intercalated layered silicate using Distearyldimethyl ammoniumchloride(DDAC) by ion exchange reaction. XRD analysis of samples resulted in well-ordered large d-spacing of 48.96~52.16Å. DDAC-magadiite increases thermal stability and this impressed physical properties will be helpful to manufacture polymer-clay nanocomposite.