在溶剂转移诱导的相分离过程中,使用相场模拟分析了形形成动态
Jesse M Steenhoff1, Martin F Haase1
1Van 't Hoff Laboratory for Physical and Colloid Chemistry, Utrecht University, Utrecht, The Netherlands. j.m.steenhoff@uu.nl.
Physical chemistry chemical physics : PCCP
|February 19, 2025
概括
一个新的相场模型可视化了在溶剂转移诱导相位分离 (STrIPS) 过程中形成双连续乳液凝 (bijel). 这种模型将比耶尔形态与缓慢相隔动态联系起来,有助于未来的材料设计.
科学领域:
- 软物质物理学 软物质物理学
- 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.
背景情况:
- 溶剂转移诱导相分离 (STrIPS) 制造了双连续的介面塞乳液凝 (bijels).
- 比耶尔在膜分离和能量储存方面有潜在的应用.
- 目前的STrIPS方法缺乏实地观测,这阻碍了对比耶尔形成的理解.
研究的目的:
- 为STrIPS开发一个相场 (PF) 模型,以便在现场观测比耶尔形成.
- 为了将相分离过程与由此产生的比耶尔形态联系起来.
- 为了阐明在STrIPS中控制贝尔结构形成的机制.
主要方法:
- 开发一个模拟STrIPS的相场 (PF) 模型.
- 模型预测与实验结果的比较.
- 在模型中分析相位分离动态和溶剂扩散.
主要成果:
- 该PF模型准确地复制实验性STrIPS形态趋势.
- 该模型显示,相对于溶剂扩散的影响,缓慢相位分离的动力学会影响贝尔结构.
- 在STrIPS过程中实现了相位分离的现场可视化.
结论:
- 该PF模型为STrIPS bijel形成机制提供了关键的见解.
- 这种建模方法可以指导制造新奇的bijel形态.
- 了解形成动态是优化应用程序bijel属性的关键.
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