分子旋转器用于现场粘度测绘,用于在封闭液体混合物的蒸发过程中进行粘度测绘
Florence Gibouin1, Dharshana Nalatamby1, Pierre Lidon1
1Laboratoire du Futur, (LOF)─Solvay─CNRS─Université de Bordeaux, UMR 5258, Bordeaux, Pessac 33600, France.
ACS applied materials & interfaces
|February 5, 2024
概括
这项研究介绍了光终身成像显微镜和分子旋转器,用于绘制溶剂蒸发期间的液体度和粘度图. 这种方法有助于理解材料配方过程和封闭式蒸发系统.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 物理化学 物理化学
背景情况:
- 材料配方过程通常涉及从液体混合物中蒸发溶剂,导致非挥发性化合物的度和组装.
- 这些干燥过程的准确建模是具有挑战性的,因为缺乏用于局部和时间解析的工具,在封闭系统中绘制度场的地图.
- 了解溶剂蒸发动态对于控制材料特性和在薄膜和液滴中组装至关重要.
研究的目的:
- 引入和验证一种用于局部定量绘制粘度和度场的新方法,在封闭的,蒸发的液体中.
- 为了研究悬浮液体薄膜和含有果糖和水混合物的沉液滴的干燥动态.
- 为了证明光终身成像显微镜 (FLIM) 与光分子旋转器相结合用于表征蒸发过程的实用性.
主要方法:
- 使用光终身成像显微镜 (FLIM) 作为主要的成像技术.
- 采用光分子旋转器作为对局部粘度和度的敏感探针.
- 研究模型系统:悬浮的液体薄膜和正在干燥的果糖水混合物的状滴.
主要成果:
- 在蒸发的液体薄膜和液滴中,成功地实时绘制了局部粘度和度场.
- 证明了基于FLIM的方法能够提供关于干燥动态的定量数据的能力.
- 观察到的干燥行为与已建立的物理模型一致,验证了测量方法.
结论:
- 使用光分子旋转器的光终身成像显微镜为研究受限蒸发系统提供了一种多功能和定量工具.
- 开发的方法为溶剂蒸发过程中的度和粘度变化提供了关键的见解,有助于材料的配方和组装.
- 这种技术克服了以前方法的局限性,使复杂的干燥现象能够精确地表征.
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