卵磷脂 (PC)脂质体诱发的乳液凝集举动(英文)

Aggregation Behavior of Hexadecane Emulsions Induced by Egg Yolk PC Vesicles

用光散射、荧光漏出法、表面张力、电气泳动等方法研究了添加卵磷脂 (PC)脂质体后的十六烷乳液油滴的凝集举动。调查了 3个可变因子 :①体系中LaCl3 的浓度变化 ;②脂质体的浓度 ;③脂质体的大小。实验结果表明 :在吸附的初级阶段 ,脂质体在油滴表面上将保持它的球状结构 ,之后将缓慢破裂 ,最后在油滴表面上形成单分子膜。所以 ,在脂质体被添加后的最后阶段 。

WT5”BZ]:We studied the aggregation behavior of hexadecane droplets after adding phosphatidylcholine(PC)vesicles to the suspension in medium.The variable factors in these experiments were (i)the concentration of LaCl 3 the bulk,(ii)the concentrations of the PC vesicles,and(iii)the size of the PC vesicles.ζ-Potentials of the formed aggregates containing emulsion droplets and adsorbed on the emulsion surface PC vesicles were investigated by electrophoresis,leakage test of fluorescence,and surface tension measurements.The experimental results indicated that during the initial stage of adsorption,PC vesicles hold well integrated into the aggregates and then they disintegrated gradually into a monolayer-like structure,although the latter process is relatively a slow one.It is concluded that the initial aggregation of emulsion droplets after adding PC vesicles is due to the inter particle bridging induced by the adsorbed PC vesicles.