| Abstract: | 本研究利用液中硬化法來進行海藻酸鈣包覆油性染料微膠囊的製備。以油性染料芥黃為芯材，海藻酸鈉作微膠囊的殼材。將海藻酸鈉粉末配製成不同比例的海藻酸鈉膠體，氯化鈣配製成不同比例的氯化鈣水溶液，將海藻酸鈉膠體和油性染料芥黃以10:1、15:1、50:1 三種不同殼芯比之混合液，分別以500rpm 攪拌速度將其分散，再將此不同比例混合之溶液置入噴槍中(高度為60cm，壓力為3.2kg/cm^2)，再噴入氯化鈣水溶液中進行交鏈硬化形成微膠囊實驗樣本。將最好的樣本再利用不同氯化鈣濃度進行微膠囊成形性、粒徑及釋放之探討。結果顯示以海藻酸鈉1.5%、殼芯比為15:1 的成形性較佳，則平均粒徑為62.95±1.50μm。氯化鈣濃度為1%時，平均粒徑為70.80±2.49μm。釋放性以2.5%海藻膠之釋放性較慢。
In this study, the spray-hardening method for the preparation of calcium alginate coated oily dye microcapsules. To the oily dye mustard yellow as the core material, sodium alginate microcapsules shell material. Experiment the first alginate powder was formulated into a different proportion of alginate hydrocolloids, calcium chloride formulated into different proportions of calcium chloride aqueous solution, the sodium alginate colloids and mustard yellow oily dye 5:1,10:1,50:1 three different shell core than the mixture, and then were 500rpm stirring speed dispersion, and then mixing different proportions of the solution was placed in the gun (height of 60cm, and a pressure of 14kg/cm3), then sprayed into the aqueous calcium chloride solution hardening of the linkage to form microcapsules experimental samples. The best samples using different concentration of calcium chloride microcapsules trip, particle size, and the release of explore. The results show that alginate 1.5%, and the shell core ratio of 15:1 and better formability, the average particle diameter to 62.95±1.50μm.Calcium chloride concentration of 1%,the average particle diameter of 70.80± 2.49μm. The release of a better release of 2.5% sodium alginate. |
