在短链酒精和表面活性剂混合水溶液中的气泡表面流动性模式
Pavlína Basařová1, Vladislav Shirokov1, Artur Sergunin1
1University of Chemistry and Technology Prague, Department of Chemical Engineering, Prague, Czech Republic.
Journal of colloid and interface science
|February 17, 2026
概括
研究了混合表面活性剂溶液中的气泡表面流动性. 添加酒精可以通过改变表面活性剂吸附来重新调动泡表面,从而增加泡速度.
科学领域:
- 合体和表面科学科学
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 混合表面活性剂溶液中的泡行为对于工业应用至关重要.
- 了解界面过程需要分析表面张力动态.
研究的目的:
- 研究短链醇和表面活性剂混合物的水溶液中的泡表面流动性.
- 确定酒精度对表面活性剂吸附和表面张力梯度的影响.
主要方法:
- 分析单个和混合表面活性剂溶液的平衡和动态表面张力.
- 观测气泡表面的移动性和终端上升速度.
- 配合表面活性剂模型适合表面张力数据.
主要成果:
- 泡表面在纯表面活性剂溶液中是不移动的,但在酒精-表面活性剂混合物中会重新移动.
- 增加酒精度导致酒精在接口上取代表面活性剂.
- 在较高的酒精度下,表面活性剂活性和表面张力梯度显著下降.
结论:
- 酒精与表面活性剂的相互作用阻碍了表面活性剂的吸附,导致泡表面的重新移动.
- 在特定的酒精度下观察到表面再移动和增加泡速度.
- 混合表面活性剂系统可以对泡动态进行调节控制.
相关概念视频
Solubility
21.3K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
21.3K
Entropy and Solvation
8.6K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
8.6K
Surface Tension of Fluid
1.7K
Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...
Surface tension varies...
1.7K
Intermolecular Forces and Physical Properties
28.6K
28.6K
Colloids
21.5K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
21.5K
Physical Properties of Alcohols and Phenols
16.8K
Alcohols are organic compounds in which a hydroxy group is attached to a saturated carbon. Phenols are a class of alcohols containing a hydroxy group attached to an aromatic ring. The physical properties of the alcohols and phenols are influenced by hydrogen bonding due to the oxygen–hydrogen dipole in the hydroxy functional group and dispersion forces between alkyl or aryl regions of alcohol and phenol molecules.
Alcohols possess a higher boiling point than aliphatic hydrocarbons of similar...
Alcohols possess a higher boiling point than aliphatic hydrocarbons of similar...
16.8K


