关于聚合物液滴中的沉积形态的联合实验和理论研究
Tiantian Song1, Zechao Jiang2, Xingkun Man2,3
1Key Laboratory of Functional Polymer Materials of Ministry of Education, Tianjin Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
Langmuir : the ACS journal of surfaces and colloids
|December 18, 2023
概括
这项研究揭示了聚合物分子重量和度如何影响滴滴蒸发,从而导致不同的膜图案. 较高的分子量和度会减缓蒸发,并从咖啡环中形成均的膜.
科学领域:
- 材料科学 材料科学 材料科学
- 流体动力学 流体动力学
- 物理化学 物理化学
背景情况:
- 了解滴滴蒸发对于各种应用至关重要.
- 控制聚合物滴滴蒸发的具体机制尚不清楚.
- 分子重量在聚合物滴滴蒸发中的作用需要进一步研究.
研究的目的:
- 系统地研究聚合物滴滴蒸发.
- 探索分子量,度和蒸发速度的影响.
- 开发一个解释蒸发机制的理论模型.
主要方法:
- 对聚合物滴进行系统的实验.
- 不同的分子重量 (大小的2-4个数级) 和度 (大小的4个数级).
- 基于Onsager原则开发一个理论模型.
主要成果:
- 增加分子量和度会增强接触角歇斯底里.
- 较高分子量和度的蒸发速度较慢.
- 记录了从多环到咖啡环和统一电影的过渡.
结论:
- 分子重量和度是控制聚合物液滴蒸发动态的关键因素.
- 理论模型提供了关于动态蒸发机制的见解.
- 这些发现指导了滴滴处理中沉积模式的控制.
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