聚分散,排斥性囊泡的剪切稀释悬浮的微观结构和动力学
Nikolaos Kolezakis1, Stefano Aime2, Raffaele Pastore1
1Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy.
Soft matter
|October 13, 2025
概括
带电囊泡悬浮体显示由于多分散性诱导的结构变化而发生剪切稀释. 这一令人惊的发现为密集,充电的流体动力学提供了洞察力.
科学领域:
- 体和接口科学科学
- 软物质物理学 软物质物理学
- 复杂液体的风病学 复杂液体的风病学
背景情况:
- 研究了与工业相关的带电囊泡分散.
- 了解它们的风学,结构和动态是至关重要的.
研究的目的:
- 为了研究充电囊泡分散的气质,结构和动态特性.
- 为了解释在低度下观察到的剪切稀释行为.
主要方法:
- 在稀释到缩条件下进行风病学测量.
- 使用分散强度进行微观结构分析.
- 动态光散射用于研究相关函数.
主要成果:
- 悬挂在低体积分数时表现出剪切稀释行为.
- 观察到结构和动态的微观过渡.
- 这种过渡归因于多分散和拥挤,而不是排斥性相互作用.
结论:
- 剪切薄化源于一种短暂的,多分散性驱动的结构.
- 这种现象可能在密度高,多分散的充电悬浮中很常见.
- 这些发现挑战了关于囊泡相互作用的先前假设.
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