Bergamaschi Mateus M, Santos Orlando D H, Rocha-Filho Pedro A, Friberg Stig E
Department of Pharmaceutical Science, Faculty of Pharmacy, University of Sao Paulo, Ribeirao Preto, SP, 14040-903, Brazil.
J Cosmet Sci. 2008 Jan-Feb;59(1):15-32.
Optical microscopy and centrifugation were used to observe the structural changes during evaporation of a commercial skin lotion of unknown composition. The degree of evaporation was determined from the changed weight of a microscope slide with the emulsion on a defined area and thickness, the evaporation loss versus time being measured by a balance under an infrared lamp. The results revealed not only which parts of the emulsion were most prone to evaporation without chemical analysis, but also gave surprising information as to which kind of structures would appear after extensive evaporation. The importance of these changes for the action of a skin lotion is briefly discussed.
利用光学显微镜和离心法观察了一种成分未知的商用护肤乳液蒸发过程中的结构变化。通过在特定面积和厚度的载玻片上涂覆乳液，根据载玻片重量的变化确定蒸发程度，在红外灯下用天平测量蒸发损失随时间的变化。结果不仅揭示了在无需化学分析的情况下乳液的哪些部分最容易蒸发，还给出了关于大量蒸发后会出现何种结构的惊人信息。简要讨论了这些变化对护肤乳液作用的重要性。
