泡稳定性的另一个可能的理由是:气液界面的键的数量和强度
Bao Xiao1,2, Tianyu Liu3, Dongdong Wang4
1Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu 610500 Sichuan, China.
The journal of physical chemistry. B
|March 7, 2025
概括
这项研究揭示了SDS,SDBS和AES等表面活性剂如何通过在气液界面形成键来稳定泡. 较强的键增强了泡稳定性和薄膜弹性,抵消了泡凝聚.
科学领域:
- 表面化学 表面化学
- 体科学 体科学 体科学
- 材料科学 材料科学 材料科学
背景情况:
- 在各种工业应用中,泡的稳定性至关重要.
- 表面活性剂在气液界面的吸附是泡形成的关键.
- 了解泡稳定分子机制是一个持续的挑战.
研究的目的:
- 研究不同表面活性剂在泡稳定中结合的作用.
- 阐明气体-液体界面的键动态如何影响泡特性.
- 为了比较二甲基硫酸盐 (SDS),二甲基二硫酸盐 (SDBS) 和二甲基多氧乙烯乙硫酸盐 (AES) 的泡稳定机制.
主要方法:
- 在气液界面对键相互作用的分析.
- 对表面活性剂吸附行为的观察.
- 评估泡稳定性和薄膜弹性.
- 研究水解层内的水分子动态.
主要成果:
- 表面活性剂在气液界面上吸附,与水形成键.
- 键延迟了水-水键的松,阻碍了排水.
- 具有更强结合能力的表面活性剂表现出增强的泡稳定性.
- 一个稳定的键网络强化了气液膜,增加了弹性和抗扰性.
结论:
- 气液界面的结合是表面活性剂介导泡稳定的一个关键因素.
- 表面活性剂形成和维持强大的键网络的能力与增强的泡稳定性直接相关.
- 这种机制为泡稳定提供了新的视角,有可能减轻由马兰戈尼效应驱动的泡凝聚.
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