疏水相性质对控制油/水和空气/水接口上的纳米粒子阻塞的影响
Olivia M Haider1, Lynn M Walker2
1Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.
Langmuir : the ACS journal of surfaces and colloids
|August 7, 2025
概括
疏水性流体显著影响流体接口上的粒子阻塞,影响接口覆盖和相互作用. 了解这些效应对于设计稳定的乳液至关重要.
科学领域:
- 合体和表面科学科学
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
背景情况:
- 通过纳米粒子稳定流体接口在化品,制药和食品行业至关重要.
- 界面力学取决于粒子行为和流体特性,对疏水阶段的作用的理解较少.
- 现有的研究往往侧重于水相性质,忽视了非极性成分的影响.
研究的目的:
- 调查疏水性液体对流体/流体界面上的颗粒堵塞的影响.
- 用不同的非极相来描述带有粒子接口的机械性质.
- 阐明疏水阶段在界面稳定性和粒子组织中的作用.
主要方法:
- 使用CTAB-SiO2 (离子表面活性剂-离子纳米粒子) 复合物的模型水相.
- 在空气/水,十二/水和油/水接口上研究了颗粒吸附.
- 在受控条件下使用微电压计测量吸附动力学和界面形学.
主要成果:
- 疏水阶段显著影响了粒子在接口的有效覆盖面积,即使在持续的水态条件下.
- 界面干扰受颗粒湿透性和压缩下被吸附的颗粒之间的静电相互作用的影响.
- 在界面上的侧面粒子相互作用显然受到非极性流体的性质的影响.
结论:
- 非极相对粒子负载接口的机械性能和稳定性起着至关重要的作用.
- 疏水液的变化使界面特性变得复杂,影响粒子吸附和组织.
- 这项研究促进了对各种流体界面的固体粒子相互作用的理解,有助于控制的乳液设计.
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