纳米紫胶蜡乳液的制备

Preparation of Shellac-wax Nano-emulsions

摘要:

为了扩展紫胶蜡的应用形式，利用Shah法制备纳米紫胶蜡乳液。通过单因素试验对纳米紫胶蜡乳液制备工艺中的各个影响因素(乳化剂HLB值、阴离子乳化剂配比、乳化剂用量、搅拌速度、乳化温度、乳化时间)进行选择，从中选取对纳米紫胶蜡乳液粒径影响较大的三个因素：阴离子乳化剂配比、转速、乳化温度进行进一步优化，根据Box-Behnken中心组合试验设计原理，采用响应曲面法以平均粒径为响应值做响应面和等值曲线，得出最佳工艺条件为：阴离子乳化剂比例15.9%、转速890r/min、乳化温度90℃，在优化条件下制得的乳液平均粒径为30.5nm，且具有良好的分散性和稳定性。

Abstract:

In order to expand the scope of application of shellac wax, nano-shellac-wax emulsions was prepared by Shah method through single factor experiment to choose factors and levels. Average particle size of the emulsion were optimized through response surface method with three factors and three levels based on principle of Box-behnken design. Results showed that the optimum average particle, the rate of mixing emulsifying temperature are 30.5nm, 15.9%, 890r/min, 90℃, respectively. The particle size, distribution and stability of shellac-wax emulsions are studied with the laser granularity analyzer.The average particle size of shellac-wax emulsions are below 50nm and were well-distributed.