The synthesis of basic aluminum acetate and development of sustained-released aluminum chloride

• Main Authors: Jr-Cheng Huang, 黃致誠
• Other Authors: Ce-shing Sheu
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/96356326839847416299

碩士 === 朝陽科技大學 === 應用化學系碩士班 === 94 === As sodium meta aluminate and acetic acid were mixed at a low speed until reaction was completed, the resulting mixture was filtered with suction along with a thorough washing. The product of aluminum diacetate was obtained in 67.3% of yield. We make a composition analysis of Aluminum acetate from four different companies in the market. We compare the difference which is between self-made composition and other companies compositions. The result of an analysis about aluminum concentration is that self-made composition is 14.8% but the composition of the companies is between 13.5~16.4%; the result of an analysis about sodium residual is that self-made composition is 240.8ppm and the other is between 109.6ppm~312.8ppm. Furthermore, we use fluid-bed spray/granulator/coater to make aluminum chloride coating with Polymethacrylate. After many experiments we make a conclusion. The first is we choose Eudragit S to be coating. The second is that the plasticizer is Citroflex-2. The third is that the choice of plasticizer concentration is added about 15% of Eudragit S into solution. At this time, it is the best ductility and unfriability. The percentage of coating concentration is 30% Eudragit S in per gram aluminum chloride.