中文摘要：

为从微观角度研究乳液体系的稳定性,采用基于光散射原理的稳定性分析仪（Turbiscan Lab）,研究了W/O型乳液体系OP-4/癸烷/盐酸的稳定性,考察了OP-4浓度、温度、盐酸浓度等因素对体系稳定性的影响。结果表明：在所考察的3 wt%-7 wt%浓度范围内,乳液稳定性随着OP-4浓度的增大而提高。当OP-4浓度达到6 wt%后,乳液具有较高的稳定性。在所考察的20℃-60℃范围内,当温度低于30℃时,乳液稳定性较高。当温度达到40℃后,乳液稳定性随温度的升高而显著降低,乳液液滴粒径明显增大,液滴发生聚并。当盐酸浓度较低时,H＋与OP-4分子的羟基（—OH）和氧乙烯基（—CH2CH2O）之间存在的氢键作用有利于乳液稳定性的提高,但当盐酸浓度过高时,则会使OP-4的醚键发生断裂,导致乳液稳定性下降。当温度低于40℃、OP-4浓度高于6 wt%时,OP-4/癸烷/盐酸乳液具有高的稳定性。

英文摘要：

To study the stability of emulsion system from microscopic aspect,the stability analyzer（ Turbiscan Lab） based on light scattering principle was used to investigate the stability of W/O emulsion system of OP-4 / decane / HCl,including the influence of OP-4 concentration,temperature,HCl concentration on the stability of the system. The results showed that： In the range of 3 wt% -7 wt% of OP-4 concentrations,emulsion stability improved with the increase of OP-4 concentration,when the OP-4 concentration reached 6 wt %,the emulsion had higher stability. In the temperature range of 20 ℃ - 60 ℃,the emulsion had higher stability below 30 ℃,while over 40 ℃,the emulsion stability decreased significantly with the rise of temperature,and the size of emulsion droplet increased obviously,indicating that droplets-coalescing occurred. When the HCl concentration waslow,the hydrogen bonding between H＋and hydroxyl group（ —OH） and oxyethylene group（ —CH2CH2O） of OP-4 molecular improving the stability of the emulsion,when the HCl concentration was too high,it make the OP-4 ether bond rupture,and resulting in a decline in the emulsion stability. When the temperature was lower than 40 ℃ and the OP-4 concentration was above 6 wt%,the OP-4 / decane / HCl emulsion had high stability.