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Updated: May 26, 2025

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溶剂结构受控制的SeedGel形成研究使用可混合的二进制溶剂

Yuyin Xi^1,2, Ruipeng Li³, William T Heller⁴

¹Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA. xiyuyin28@gmail.com.

|February 24, 2025

概括

种子凝的形成依赖于溶剂密度的波动,而不是批量相位分离. 这一发现扩大了可用于创建稳定的双连续结构的可用二元溶剂的范围.

科学领域:

材料科学材料科学材料科学
软物质物理学软物质物理学
物理化学物理化学

背景情况:

溶剂分离驱动凝 (SeedGels) 提供了一种可调节的方法,用于稳定二元溶剂系统中的双连续结构.
以前的SeedGel研究主要集中在显示散装相分离的溶剂系统上.

研究的目的:

为了研究由可混合3甲基胺 (3MP) /水和化3MP (d-3MP) /水系统形成的SeedGels的结构性质.
确定控制SeedGel形成的关键参数,特别是在可混合溶剂混合物中.

主要方法:

使用超小角度中子散射 (USANS) 和小角度X射线和中子散射 (SAXS和SANS) 的系统结构分析.
用不同的二元溶剂组成和化水平制备的SeedGels的比较研究.

主要成果:

用3MP/水形成的SeedGel结构与之前观察到的lutidine/water相似.
3MP的化显著改变了凝温度.
溶剂成分可以在温度变化时在凝领域之间交换.
重要的是,对于SeedGel形成,不需要二元溶剂的大量相位过渡.

结论:

与二进制溶剂密度波动相关的相关长度是SeedGel形成的关键参数,不管散装阶段分离如何.
这一发现扩大了适用于SeedGel制备的二元溶剂的范围,包括可混合系统.
为新型SeedGel应用选择合适的可混合二元溶剂提供指导.

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