由毛细管上升引起的波动在干燥聚合物溶液薄膜中的球形粒子上
Gabrielle Di Mauro1, Alice Etienne-Simonetti2, Bertrand Heurtefeu3
1CNRS, Surface du Verre et Interfaces, Saint-Gobain, 93300 Aubervilliers, France.
Langmuir : the ACS journal of surfaces and colloids
|March 14, 2025
概括
干燥聚合物薄膜中的毛细血管升起形成粘性毛细血管,其动态与滑理论相匹配,具有有效时间. 二次波纹与阴囊体积相关,表明流动驱动的聚合物积累.
科学领域:
- 流体动力学 流体动力学
- 材料科学是一种材料科学.
- 表面科学是一门科学.
背景情况:
- 毛细血管升起是流体力学的一个基本现象.
- 在聚合物溶液中的干燥过程涉及复杂的流体流和材料沉积.
- 了解毛细管力和干燥动力学之间的相互作用对于材料加工至关重要.
研究的目的:
- 为了研究在干燥聚合物溶液膜中毛细血管升高期间的流体动力学.
- 描述在这个过程中观察到的波纹的形成和动态.
- 为了将波纹特征与聚合物薄膜和半径的干燥引起的变化相关联.
主要方法:
- 一个玻璃球与干燥聚合物溶液薄膜接触的实验设置.
- 观察和分析粘性毛细血管的形成和传播.
- 滑理论应用于模拟波纹动态,并纳入有效时间参数.
- 二次波纹幅度和半阴体体积之间的相关性分析.
主要成果:
- 一个粘性毛细血管最初形成并传播,直到它凝固.
- 波纹的动态和最终位置与有效时间使用时的滑理论预测保持一致.
- 在后期阶段出现了次级波纹,其幅度取决于阴茎体积.
- 有证据表明,二次波纹形成是由干燥半月体内的流动驱动的.
结论:
- 这项研究阐明了在干燥聚合物薄膜中毛细血管上升的动态.
- 滑理论,经过干燥效应的修改,准确地描述了早期的波纹行为.
- 晚期波纹形成与阴囊驱动的流动有关,并导致聚合物积累.
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