以非离子表面活性剂为乳化剂制备紫胶蜡乳液  

Preparation of Shellac-wax Emulsion by Nonionic Surfactant

作　　者：李凯[1,2] 周梅村[2] 张弘[1] 郑华[1] 

机构地区：[1]中国林业科学研究院资源昆虫研究所,云南昆明650224 [2]昆明理工大学化学工程学院．云南昆明650224

出　　处：《林产化学与工业》2010年第5期69-75,共7页Chemistry and Industry of Forest Products

基　　金：国家林业局948技术引进项目(2008-4-78);国家林业科技成果推广项目(无编号)

摘　　要：采用反相法制备出紫胶蜡乳液。通过单因素试验选取因素水平,根据Box-Behnken中心组合试验设计原理采用3因素3水平响应曲面法,以体积平均粒径为响应值做响应面和等值曲线。结果表明,最佳工艺条件为:乳化剂用量5 g、转速500 r/min、乳化温度88℃,在此条件下得出最佳体积平均粒径为0.39μm。通过激光粒度仪对优化条件下制得的紫胶蜡乳液进行粒度分析和冻融性试验,粒子粒径在0.76μm下均匀分布并且有良好的冻融稳定性。Shellac-wax emulsion was prepared by inverse phase method.Through single factor experiment to choose factors and levels,volume average particle diameter of the emulsion was optimized through response surface methodology with three factors and three levels based on principle of Box-Behnken design.The results showed that the optimum conditions were as follows： emulsifier dosage 5g,rate of mixing 500r/min,emulsifying temperature 88℃.Under the optimal conditions,the optimum volume-average particle size was 0.39um.The particle size and distribution of the optimized shellac-wax emulsion were studied with laser granularity analyzer.The stability of the shellac-wax emulsion was tested by freezing-thawing experiment.The particle diameter of shellac-wax emulsion is well-distributed below 0.76μm,and the emulsion possesses good freezing-thawing stability.

关 键 词：紫胶蜡 亚微细粒 反相法 

分 类 号：TQ391[化学工程]