Abstract
The structure and properties of water and aqueous solutions have always been the focus of attention. The surface tension of acetone aqueous solutions were measured by using Raman spectra in different molecule environments, and the changes of surface tension were analyzed with hydrogen bonding in the mixtures. In this case, OH stretching bands were fitted into three Gaussian components and then assigned to different hydrogen-bonded structures. Furthermore, it can be concluded that the changes of microstructure on the binary mixture solutions exhibited regularly with the additive acetone, indicating that there showed the correlation between surface tension and relative peak intensity. The results show that the strengthening of hydrogen bonding between acetone and water will gradually weaken the surface tension of the solutions. It was confirmed that there showed the relationship between the microstructure and macroscopic properties of the aqueous solutions by the basis experiment data using a spectroscopy method.
Highlights
Water, as a simple and peculiar substance in nature, was widely used in many fields and has become a hot science topic that has been received extensive attention [1,2,3,4,5]
The transformation of hydrogen bond structure led to abnormal changes of other properties in aqueous solutions, resulting from the change of microstructure of water owing to hydrogen bonding networks
It was found that the changes on surface tension of the solutions were affected by two pure solutions, which are directly conductive to the content of it
Summary
As a simple and peculiar substance in nature, was widely used in many fields and has become a hot science topic that has been received extensive attention [1,2,3,4,5]. The transformation of hydrogen bond structure led to abnormal changes of other properties in aqueous solutions, resulting from the change of microstructure of water owing to hydrogen bonding networks. The hydrogen bonding network, as a microscopic interaction, was related to water molecular structure, being a key factor for many anomalous properties of water with the change of microstructure [1,25,26,27]. An important branch of modern spectroscopy, Raman spectroscopy, is widely used, which has many advantages, for example, non-destructive, non-contact, in-situ testing, etc It can avoid direct interaction with molecules and molecular structure, especially useful for of structure and weak interactions of aqueous systems, which was different from other high-energy ion testing. In order to explore the structure and the properties of aqueous solutions, an attemptwhich is relevant to the present effort is devoted to analyze the typical hydrogen bond system solutions of acetone-water on the relationship between hydrogen bonding and solutions structure and on the surface tension with increasing amount of acetone
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