Clarkson University, Department of Chemistry, Potsdam, NY13699-5810 Potsdam USA.
Int J Cosmet Sci. 1998 Dec;20(6):355-67. doi: 10.1046/j.1467-2494.1998.177054.x.
The vapour pressures of phenethyl alcohol and limonene in their water-in-oil microemulsion region were measured by head space gas chromatography of equilibrated samples. The results showed that the vapour pressure of both fragrance compounds in their mutual solutions without surfactant or water was significantly greater than that in ideal solutions. The high vapour pressure of phenethyl alcohol in such solutions was strongly reduced by addition of the surfactant, Laureth 4, a commercial nonionic surfactant, approximately teteraethylene glycol dodecyl ether. Saturation of the solutions with water gave a further reduction in the vapour pressure. The high vapour pressure of limonene was not influenced to a corresponding degree; in fact, only a small influence was found. The results were interpreted as resulting from differences in intermolecular interactions due to location of the fragrance compounds in different parts of the colloidal association structures.
采用顶空气相色谱法对平衡样品进行测定，测量了橙花醇和柠檬烯在油包水乳状液区域的蒸气压。结果表明，在没有表面活性剂或水的情况下，两种香味化合物在相互溶液中的蒸气压明显大于理想溶液中的蒸气压。添加表面活性剂 Laureth 4（一种商业非离子表面活性剂，约为四乙二醇十二烷基醚）后，橙花醇在这些溶液中的高蒸气压会大大降低。用水饱和溶液会进一步降低蒸气压。柠檬烯的高蒸气压没有受到相应程度的影响；事实上，只发现了很小的影响。结果解释为由于香味化合物在胶体缔合结构的不同部位，导致分子间相互作用的差异。
