有效的含二链离子表面活性剂,用于稳定微乳液中的油水接口
Adhip Rahman1, Julian Eastoe1, Ilona E Serafin1
1School of Chemistry, University of Bristol, Cantock's close, BS8 1TS, Bristol, UK. rahmanadhip92@gmail.com.
Soft matter
|December 11, 2025
概括
新的含表面活性剂有效地稳定油水接口,形成超低张力微乳液. 这些三甲基 (TMS) 刺表面活性剂为危险的化表面活性剂提供了环保的替代品.
科学领域:
- 合体和表面科学科学
- 材料化学 材料化学
- 物理化学 物理化学
背景情况:
- 带有 (Si) 原子在疏水性链尖上的二链离子表面活性剂,称为三甲基 (TMS) 刺表面活性剂,可以显著降低空气-水表面张力.
- 这些TMS表面活性剂稳定油水 (O-W) 接口的能力,特别是在微乳液中,在很大程度上仍未被探索.
研究的目的:
- 研究TMS表面活性剂在稳定油中的水微乳液 (W/O-μEs) 的有效性.
- 确定由此产生的油水界面张力,并探索影响微乳液稳定性的因素.
- 为了比较TMS表面活性剂与传统化表面活性剂的性能.
主要方法:
- 在油水系统中合成和应用TMS表面活性剂.
- 测量油水界面张力 (γo/w) 的测量.
- 通过改变表面活性剂和溶剂结构来优化微乳液稳定性.
- 对比变化小角度中子散射 (SANS) 用于描述滴滴结构和形态.
主要成果:
- TMS表面活性剂成功地稳定了油中的水微乳液 (W/O-μEs) 的超低界面张力 (10-2-10-4 mN m-1).
- 微乳液的稳定性取决于表面活性剂和溶剂的化学结构 (例如,异质与芳香).
- SANS 分析证实,水滴由表面活性剂单层稳定,其形态与相位稳定性边界相关.
结论:
- 含有的TMS表面活性剂在油水接口上非常有效,可以达到对微乳液稳定至关重要的超低电压.
- 这些新型表面活性剂为潜在有害的化表面活性剂提供了可行的,环保的替代品.
- 该研究强调了TMS表面活性剂在微乳液配方中的特定应用中的调节性.
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