Institute of Biocolloid Chemistry, 03142 Kyiv, Ukraine.
Langmuir. 2010 Sep 21;26(18):14624-7. doi: 10.1021/la1023778.
Spontaneous nonlinear oscillations of surface tension produced by transfer of either octanoic or nonanoic acids from a droplet situated in the bulk water to the air/water interface are studied experimentally. It is shown that the oscillation amplitude decreases significantly with the increase of pH of aqueous phase. At pH > 6.5, detectable oscillations for the two fatty acids studied do not exist. The results are discussed in terms of the mechanism proposed recently for spontaneous oscillations produced by transfer of nonionic surfactants.
实验研究了从位于水体中的液滴转移到空气/水界面的辛酸或壬酸引起的表面张力的自发非线性振荡。结果表明，随着水相 pH 值的增加，振荡幅度显著减小。在 pH > 6.5 时，对于所研究的两种脂肪酸，不存在可检测到的振荡。结果根据最近提出的用于解释非离子表面活性剂转移产生自发振荡的机制进行了讨论。
