光谱学与光谱分析, 2018, 38 (9): 2778, 网络出版: 2018-10-02  

二甲基亚砜水溶液表面张力及粘度与氢键的拉曼光谱研究

Hydrogen Bonding Effect on the Surface Tension and Viscosity of DMSO Aqueous Solutions Studied by Raman Spectroscopy
作者单位
1 内蒙古科技大学内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室, 内蒙古 包头 014010
2 内蒙古科技大学理学院, 内蒙古 包头 014010
摘要
利用ZL-10型全自动界面张力仪(柏金环法)和NDJ-5S型数显粘度计测量体积分数为5%~100%的二甲基亚砜(DMSO)水溶液及超纯水, 得到表面张力和粘度的变化规律。 用拉曼光谱仪测量不同浓度DMSO水溶液的拉曼光谱, 得到体系中含氢键作用的拉曼频移变化规律。 实验结果表明, DMSO水溶液的表面张力随浓度的变化受DMSO水溶液中氢键作用的影响, 且与氢键强度成反相关。 DMSO与水的氢键作用对粘度的影响较表面张力更为复杂, 粘度随浓度的变化呈二次函数的反常现象, 影响因素包含氢键强度, 氢键网络结构和空间方向性多个方面。 该研究探索一种利用拉曼光谱研究水溶液微观结构与宏观物理性质关系的实验方法。
Abstract
In the present paper, surface tensions and viscosities for DMSO aqueous solutions with volume concentration range from 5 to 100% and ultrapure water weremeasured by the ZL-10 Type surface tension instrument and NDJ-5S digital readout viscometer.Dependences of Raman shiftseffects of hydrogen bands on DMSO concentrationwere investigated. The results indicated that, surface tension was influenced by the hydrogen band behavior with variation of concentration, which has a reciprocal correlation with the hydrogen band intensity. The hydrogen band behavior between DMSO and water influenced viscosity more intricately, with viscosity having quadratic relationshipwith concentration. The influence factors include several aspects like the hydrogen band intensity and spatial directionality. We explored aexperimental method about using Raman spectrospcopy to investigate the relationship between microstsucture and macroscopic physical properities of aqueous solution.

欧阳顺利, 张明哲, 胡庆成, 魏海燕, 吴楠楠. 二甲基亚砜水溶液表面张力及粘度与氢键的拉曼光谱研究[J]. 光谱学与光谱分析, 2018, 38(9): 2778. OUYANG Shun-li, ZHANG Ming-zhe, HU Qing-cheng, WEI Hai-yan, WU Nan-nan. Hydrogen Bonding Effect on the Surface Tension and Viscosity of DMSO Aqueous Solutions Studied by Raman Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2018, 38(9): 2778.

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