电荷选对阴离子表面活性剂对界面纳米粒子组件刚性的影响
Henrik Siegel1, Mariska de Ruiter1, Tagbo H R Niepa2
1Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands.
Journal of colloid and interface science
|August 27, 2024
概括
像CTAB这样的阴离子表面活性剂通过削弱纳米粒子附着能量来降低界面刚性. 这种对刚度的控制允许大规模生产各种应用的平面贝杰尔板.
科学领域:
- 体和接口科学科学
- 材料科学是一种材料科学.
背景情况:
- 用相反电荷的表面活性剂使状颗粒功能化是稳定乳液,泡和 bijels 的关键.
- 表面活性剂可以降低附着能量,阻碍界面上的合体自我组装.
- 阴离子表面活性剂对粒子载体接口的界面刚度的影响仍然是一个悬而未决的问题.
研究的目的:
- 为了研究阴离子表面活性剂电荷选如何影响接口刚性.
- 了解表面活性剂度,附着能量和界面刚度之间的关系.
- 为了探索接口刚性的影响,在生产的 bijel 片.
主要方法:
- 通过分析滴滴变形,研究了CTAB功能化纳米粒子的界面刚性.
- 使用扫描电子显微镜评估纳米粒子包装密度.
- 通过界面张力,接触角度和表面活性剂吸附研究来表征附着能量.
主要成果:
- 增加的盐和酒精度降低了表面刚性和表面张力.
- 发现CTAB电荷选削弱了纳米粒子附着能量.
- 具有一致平坦性的Bijel板是通过控制界面刚度来批量生产的.
结论:
- 阴离子表面活性剂的电荷选通过调节纳米粒子附着能量来调节界面刚性.
- 控制界面刚度对于大量生产高质量的贝杰尔薄膜至关重要.
- 这些发现对催化,能量储存,组织工程和过的应用有意义.
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