通过溶剂转移诱导的相分离形成稳定双连续颗粒稳定乳液
Meyer T Alting1, Martin F Haase1
1Van 't Hoff Laboratory of Physical and Colloid Chemistry, Department of Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands. m.f.haase@uu.nl.
Soft matter
|January 10, 2025
概括
颗粒稳定乳液 (bijels) 由于与环境的流体交换而降解. 这项研究通过控制水相溶解和油流入来增强比耶尔的稳定性,这对于应用至关重要.
科学领域:
- 软物质物理学 软物质物理学
- 体科学 体科学 体科学
背景情况:
- 双连续颗粒稳定乳液 (bijels) 具有独特的相互连接的流体结构.
- 溶剂转移诱导相分离 (STrIPS) 合成了具有亚微米域的 bijels.
- 在STrIPS-bijels中的流体网络结构随着时间的推移而退化,限制了应用.
研究的目的:
- 确定驱动STrIPS-bijel破坏稳定的机制.
- 制定扩大STrIPS-bijels的稳定性的战略.
- 为了加强对流体双连续结构的控制,用于先进的应用.
主要方法:
- 同焦激光扫描显微镜观察结构变化.
- 研究油脂成分和表面化学对稳定性的影响.
- 分析比耶尔和周围油相之间的物质交换.
主要成果:
- 比耶尔的不稳定是由水性成分溶解到油相驱动的.
- 这种溶解导致油流入,并在几个小时内破坏了双连续结构.
- 减少水性损失的策略可以将bijel的稳定性延长到几周.
结论:
- STrIPS-bijels的粒子支架是长期稳定的.
- 维持流体双连续网络需要尽量减少水相损失.
- 增强的稳定性控制对于在催化,分离和能量储存中的bijel应用至关重要.
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