基于氢键作用的几种二元水溶液的表面张力特性及拉曼光谱研究

Investigation of Surface Tension Characteristics Based on Hydrogen Bonding of Several Kinds of Binary Aqueous Solutions by Raman Spectroscopy

氢键效应作为溶液中典型的微观特性直接影响溶液微观结构,并对物理和化学性质产生重要影响。对氢键作用的研究是水科学研究的重要突破口,也使得通过氢键研究水溶液性质成为一种极具优势的研究方法。通过测量不同浓度下的表面张力以及各体系拉曼光谱,研究二甲基亚砜/水、乙腈/水、丙酮/水三种具有典型氢键作用的二元溶液体系。研究了表面张力的变化规律和各体系中的氢键作用,讨论了溶液体系的微观结构变化,解释了氢键作用对表面张力的影响机制。

Hydrogen bonding as a typical microscopic characteristic of aqueous solutions directly affects the microstructure of solution and has an important effect on the physical and chemical properties.The study of hydrogen bonding is an important breakthrough in the research of water science and it is also an advantage to study the properties of aqueous solutions.We investigated the three kinds of binary aqueous solutions systems(dimethyl sulfoxide-water,acetonitrile-water and acetone-water)with hydrogen bonds.The surface tension of three kinds of aqueous solutions at different concentrations was measured and the Raman spectra with hydrogen-bonding in each system were obtained.The change law of surface tension and the hydrogen bond in each system are studied.The microstructure changes of the solution system are discussed,and the mechanism of hydrogen bond effect on the surface tension is explained.