液体表面张力与比表面自由能的热力学分析

The Thermodynamic Analysis on the Surface Tension and Specific Surface Free Energy of Liquid

对液体的表面张力和比表面自由能进行了热力学分析和比较 ,探讨了液体的表面张力和比表面自由能两个概念的各自内涵和在分子水平上的产生机理 .分析了两者在不同领域的应用和相互之间的联系。研究表明液体的表面张力是从力的角度来分析液体表面现象 ,是微观分子作用力的宏观表现 ;比表面自由能是从能量的角度来研究液体表面现象 .从微观结构分析可以得出液体的表面张力是液体表面空穴作用的结果 ,比表面自由能是液体分子间作用力作功的结果 ,两者都与液体分子间的作用力有关 .

This paper analyzes the surface tension and specific surface free energy of liquid and discusses their microstructure mechanism. The analysis indicates that surface tension of liquid is related to the liquid surface problem in terms of force and surface free energy is connected with the liquid surface problems regarding energy. At the molecular level,the surface tension involves macroscopic conduction of the molecular interactive force. The surface tension results from the liquid surface hole and the specific free energy is attributed to the work of molecular interaction force. So both of them have something to do with the molecular interaction force.