STUDY ON MEASUREMENTS OF CONTACT ANGLES AND LINE TENSION BY DIFFERENTIAL INTERFEROMETRY

微分干涉法测量接触角和线张力的研究

• 批准号: 06453057
• 负责人: ARATONO Makoto
• 金额: $ 3.52万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06453057/
• 关键词: line tension,; interfacial tension,; contact angles; liquid lens,

1. The dihedral angle of liquid lens at the air/water interface was measured with a high accuracy as a basic research of line tension measurement.(1) The dihedral angle of a lens of long chain alcohol at the air/water interface was measured as a function of temperature. The profile of the lens was fitted by the theoretical Laplace equation.(2) The dihedral angles obtained were found to be very close to those calculated from the three kinds of interfacial tensions of the system. This shows that the angles were measured with a high accuracy.(3) The upper and lower angles of the three phase contact line were measured separately and therefore this method is able to extend to the measurement of line tension.(4) The wetting-nonwetting transition and intruding of water phase onto the air/alcohol interface were discussed by using the angles and interfacial tension values.2. It became possible to observe the differential interference patterns by the microscope purchased.(1) The lenses of several kinds of organic liquids were made on water surface and the interference patterns were observed. It was found that a lens having the diameter of several ten micrometer was suitable for the interference pattern.(2) By using methyl octanoate, we have been looking for the optimum experimental conditions.

1。以高精度作为线张力测量的基础研究，在空气/水界面处的液态透镜的二面角度进行测量。（1）在空气/水界面上测量长链酒精镜的二面角度作为温度的函数。透镜的曲线由理论拉式方程拟合。（2）发现所获得的二角角非常接近从系统的三种界面张力中计算出的二角角。 （3）分别测量了三相接触线的上和下角。可以通过购买的显微镜观察差异干扰模式。（1）在水面上制成了几种有机液体的透镜，并观察到干扰模式。发现具有几个10千分尺的镜头适合干扰模式。（2）通过使用甲基八烷酸盐，我们一直在寻找最佳的实验条件。

项目成果

Y. Hayami: "Phase Transition of the Adsorbed Film of 1,1,2,2-Tetrahydroperfluoro-dodecanol at the Hexane/Water Interface" Journal of Colloid Interface Science. 172. 142-146 (1995)

Y. Hayami：“己烷/水界面上 1,1,2,2-四氢全氟十二烷醇吸附膜的相变”胶体界面科学杂志。

瀧上隆智: "Thermodynamic Study on Phase Transition in Adsorbed Film of Fluoroalkanol at Hexane/Water Interface. I" Journal of Physical Chimistry. (印刷中).

Takatomo Takigami：“己烷/水界面处氟烷醇吸附膜相变的热力学研究。I”物理化学杂志（正在出版）。

T.Takiue: "Thermodynamic Study on Phase Transition in Adsorbed Film of Fluoroalkanol at Hexane/Water Interface. I" J.Phys.Chem.(in press).

T.Takiue：“己烷/水界面氟烷醇吸附膜相变的热力学研究。I”J.Phys.Chem.（出版中）。

T. Takiue: "Thermodynamic Study on Phase Transition in Adsorbed Film of Fluoroalkanol at Hexane/Water Interface" Journal of Physical Chemistry. (印刷中).

T. Takiue：“己烷/水界面处氟烷醇吸附膜相变的热力学研究”物理化学杂志（正在出版）。

荒殿 誠: "界面張力の圧力依存性" 表面. 32. 772-783 (1994)

Makoto Aradono：“界面张力的压力依赖性”Surface 32. 772-783 (1994)。