高等学校化学学报2001，Vol.22Issue(1)：115-117,3.
黑膜厚度与膜表面张力关系的研究
Studies on the Relation of Black Film Thickness and Film Tension
摘要
Abstract
This paper covers the method of direct measurement of the disjoining pressure isotherm for sing,isolated foam films stabilized with TTAB above cmc by mierointerferometric technique.It has been studied that the relation of disjoining pressure and film thickness,and the difference between the surface tension of solution and that of the common black film under different liquid film thickness conditions.The experimental results show that common black film thickness depends on the disjoining pressure and electrolytic concentration.At a low disjoining pressure,the film thickness decreases with the increase of the disjoining pressure.At a high disjoining pressure,the film thickness decreases slightly with the increase of the disjoining pressure.This signifies that the transition between black films is jumping.The electrolyte can reduce the interaction forces between two charged monolayers of film and thin the film,so the equilibrium thickness of film decreases with increasing electrolyte concentration of the solution from which they are formed.The surface tension of common black film calculated from the disjoining pressure isotherm is slightly different from the surface tension of solution.关键词
楔压等温线/一般黑膜/Newton黑膜/膜表面张力/黑膜厚度分类
化学化工引用本文复制引用
韩国彬,吴金添,徐晓明,魏光..黑膜厚度与膜表面张力关系的研究[J].高等学校化学学报,2001,22(1):115-117,3.
