在传统的同相分离过程中,核心外微滴自发形成
Chelsea E R Edwards1,2, Hongyi Zhang1, Ginny Wang1
1Materials Research Laboratory, University of California, Santa Barbara, California 93106-9010, United States.
Langmuir : the ACS journal of surfaces and colloids
|March 25, 2025
概括
我们开发了一种简单的混合方法,以创建稳定的,核心的协滴. 这些由聚胺化物和聚烯酸组成的原细胞状结构,为多相液滴合成提供了一条新的途径.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学是一种材料科学.
- 生物物理学的生物物理.
背景情况:
- 凝聚体滴是液-液相分离的结构,在原细胞研究中具有潜在的应用.
- 现有的创建多相同滴的方法通常涉及复杂的合成或热力学控制.
研究的目的:
- 报告一种新的,单个步骤的方法,用于形成稳定的,核心的协滴.
- 用高通量显微镜和机器学习研究这些滴的形成机制和稳定性.
- 为了确定有利于形成双乳液 (DE) 凝聚液滴而不是单乳液 (SE) 滴的条件.
主要方法:
- 使用了聚胺化物 (PAH) 和聚烯酸 (PAA) 聚电解质系统.
- 采用了可扩展的,简单的混合工艺,具有不同的组成 (多电解质比率,盐度) 和加工路径 (混合速率,热力学路径).
- 应用高通量显微镜和机器学习用于滴滴形态的分类和分析.
主要成果:
- 实现了单阶段形成的原细胞样,核心的协滴,具有富含多电解质的外和富含溶剂的核心.
- 观察到DE和单一乳液 (SE) 滴的共存,表明了动态形成机制.
- 发现DE滴在广泛的成分中优先形成SE滴,注射混合速度缓慢,盐度较低,电荷静态度接近1:1 (有利于多化过量).
- 证明了DE滴的微米级稳定性,即使在凝聚后,尽管它们是变态稳定的,并由外粘弹性和粘度稳定.
结论:
- 开发的可扩展,简单的混合工艺提供了一种新且正交的机制,用于生产多相联液滴.
- 这种方法绕过了现有路线所需的滴量合成或热力学调的需要.
- 这些发现有助于理解和可扩展的生产复杂的协体结构的潜在应用.
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