作　　者： ; ; ; ; ;

机构地区： 华南农业大学食品学院

出　　处： 《高分子材料科学与工程》 2015年第1期108-114,共7页

摘　　要： 以柠檬烯为油相,吐温80为表面活性剂制备微乳,利用拟三元相图研究不同助表面活性剂及其与表面活性剂的不同比值(Km值)对微乳有效区域的影响。结果发现,当油相与表面活性剂之比小于或等于5∶5时,微乳体系可无限增溶,为U型微乳。采用电导率法、黏度法对U型微乳的水增溶过程进行研究,实验结果发现,当含水量小于40%时,微乳体系为油包水(W/O)型;当含水量为40%~60%时,微乳体系为双连续型;当含水量大于60%时,微乳体系为水包油(O/W)型。利用耗散粒子动力学(DPD)方法对水相增溶过程中微乳体系的微观结构和微乳液滴的形态特征变化进行模拟,模拟结果表明,在水相增溶过程中,微乳体系能够在含水量为40%和60%时发生相的转变,与实验结果较好吻合。 The effects of co-surfactant and their ratio(Kmvalues)on formation of microemulsions prepared with limenene as oil phase and Tween 80 as surfactant were investigated through pseudo-ternary phase diagrams,conductivity,viscosity,and the microstructure transition of microemulsion system during water solublization was studied by dissipative particle dynamics(DPD)simulation.The results show that when the Kmvalue is or less than 5∶5,the water phase could be diluted infinitely,and the system is characterized as U-type microemulsion.Water/oil,bio-continuous and oil/water microemulsion is formed when the water content is<40%,40%~60%,and >60%,respectively.The DPD simulation results show that microstructure would be transformed at the water content range of 40% or 60% during the water solubilization process.The simulated results agree well with experimental counterparts.

关 键 词： 型微乳 表面活性剂 耗散粒子动力学模拟 水相增溶

领　　域： [化学工程]