Perfluorodecalin (PFD) is extensively applied as liquid carrier of gaseous metabolites in systems for in vitro cultures of various types of cells. The influence of Pluronic F-68 on modification of the surface properties of few liquid/liquid system containing PFD was discussed. Static surface and interfacial tensions (σ) of water/PFD, culture medium/PFD, as well as air/water (referentially) two-phases systems with the aqueous phase contained nonionic 3-block copolymer Pluronic F-68, were measured by the du Noüy ring method at 25 °C and 37 °C. Values of critical micelle concentration (CMC) for Pluronic F-68 dissolved in water/PFD and air/water systems were similar at constant temperature. Smaller value of maximum surface excess (Γ_∞) and higher value of minimum surface area per adsorbed molecule (A_min) were obtained for water/PFD, than for water/air system. Increase of temperature from 25 °C to 37 °C resulted in significant decrease of CMC, decrease of Γ_∞ and increase of A_min. Calculated value of the standard Gibbs free energy of micellization was negative and became more negative for higher temperature, what indicated that micelles were formed spontaneously and the tendency for micelle formation increased with temperature increase. The Frumkin model fits well the experimentally obtained values of σ, what has been proved by the coefficient of determination equaled to 0.994–0.996.

全氟萘烷（PFD）广泛用作系统中用于各种类型细胞体外培养的气态代谢产物的液体载体。讨论了Pluronic F-68对少量含有PFD的液/液体系的表面性能改性的影响。水/ PFD，培养基/ PFD以及空气/水两相系统的静态表面张力和界面张力（σ），水相包含非离子3嵌段共聚物Pluronic F-68。 duNoüy振铃法在25°C和37°C下进行。在恒定温度下，溶于水/ PFD和空气/水系统的Pluronic F-68的临界胶束浓度（CMC）值相似。最大表面过量的较小值（Γ _∞）和水/ PFD比水/空气系统获得更高的每个吸附分子的最小表面积值（A _min）。从25℃的温度增加至37℃，导致CMC，下降的下降显著Γ _∞和增加甲_分钟。胶束化的标准吉布斯自由能的计算值是负的，并且在更高的温度下变得更加负，这表明胶束是自发形成的，并且胶束形成的趋势随着温度的升高而增加。Frumkin模型与实验获得的σ值非常吻合，确定系数等于0.994–0.996证明了这一点。