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油醇(十八烯醇)与乙酸酐的摩尔比为1/1.7,催化剂对甲苯磺酸用量为油醇与乙酸酐总质量的0.2%,25℃反应3h合成了昆虫性激素成分之一的乙酸油酯并对其进行了表征.以高分子电解质乳清蛋白(WP)和阿拉伯胶(GA)进行复凝聚制备聚合物微胶囊,对影响复凝聚的pH、两种电解质的配比及其浓度等因素进行了考察.结果表明在pH=3.5,WP/GA质量比1.5,WP和GA总浓度1.0%时复凝聚效果最佳.在该条件下以WP/GA为壁材对乙酸油酯进行了包覆,制备了不同壁材总浓度的载油微胶囊,对微胶囊的载油量和包覆率进行了测量.随着壁材总浓度的增大,芯材乙酸油酯包覆率呈现先上升后下降的变化趋势.用扫描电镜观察,发现制备的载乙酸油酯微胶囊大小在5～8μm并且乙酸油酯以核壳式结构的形式被包覆在微胶囊内部.
The molar ratio of oleyl alcohol (octadecenol) to acetic anhydride was 1 / 1.7, the amount of p-toluenesulfonic acid catalyst was 0.2% of the total mass of oleyl alcohol and acetic anhydride, and the reaction was carried out at 25 ℃ for 3h to synthesize acetic acid Oil ester was synthesized and characterized by means of complex coacervation with polymer electrolyte whey protein (WP) and gum arabic (GA) to prepare polymer microcapsules. The effects of complex coagulation pH, the ratio of two electrolytes and their concentration And other factors were investigated.The results showed that the complex coacervation was the best when the mass ratio of WP to GA was 1.5 and the total concentration of WP and GA was 1.0% The microcapsule carrier oil content and coating rate were measured.With the increase of the total concentration of the wall material, the coating rate of the core oil of the ester acetate The results showed that the size of oil-in-place ester microcapsules prepared was 5 ~ 8μm and the oil of acetoacetate was coated inside the microcapsule in the form of core-shell structure.