复杂流体悬挂囊的弹性测量
Amy Z Stetten1, Felix S Kratz2, Nathalie Schilderink1
1Physics of Complex Fluids Group, University of Twente, 7500 AE Enschede, The Netherlands.
Langmuir : the ACS journal of surfaces and colloids
|November 8, 2023
概括
这项研究量化了原油 (CRO) 接口中的弹性,揭示了在滴回收过程中从流体粘弹性到固体弹性膜的相位过渡. 这为复杂流体系统中的接口层提供了新的见解.
科学领域:
- 合体和表面科学科学
- 材料科学 材料科学 材料科学
- 类风病学 类风病学 类风病学
背景情况:
- 油/水界面是表面活性分子的宿主,形成复杂的结构,如粘性弹性或固体界面层.
- 原油 (CRO) 与盐水的接口可以形成硬,弹性的青膜,纹和纹.
- 现有的研究主要探讨粘弹性液体状态,留下固化弹性接口的研究不足.
研究的目的:
- 量化测量原油/盐水接口的弹性,在所有跌落回收的阶段.
- 描述从流体粘弹性接口到固体弹性膜的转变.
- 应用弹性膜理论来量化固化界面层中的弹性.
主要方法:
- 悬挂滴在盐水中老化,以形成表面间的青膜.
- 使用吉布斯异热法和扩展性神经学测量界面粘性弹性.
- 弹性膜理论的应用,以量化固体界面层弹性.
主要成果:
- 界面弹性从流体粘性弹性过渡到2D弹性固体在落下收缩过程中.
- 固体弹性膜表现出非同位素和非均的表面应力.
- 新的技术成功地量化了这些固体界面囊的弹性特性.
结论:
- 这项工作为原油/盐水系统中的固体界面层提供了定量弹性测量.
- 了解这些固体接口对于涉及复杂流体系统的应用至关重要.
- 这些发现推动了对固化界面层的研究,超出了传统的粘弹性体制.
相关概念视频
Temperature Dependent Deformation
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added together...
Residual Stresses in Bending
In the study of elastoplastic members subjected to bending moments, understanding the loading and unloading phases is crucial for assessing material behavior and structural integrity. During the loading phase, as the bending moment increases, the material initially responds elastically, adhering to Hooke's Law, where stress is directly proportional to strain. When the load exceeds the yield strength, plastic deformation occurs, resulting in permanent strain and deformation that remains even...
Measurements of Strain
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...
Pressure Variation in a Fluid at Rest
In a fluid at rest, the pressure at any point beneath the fluid surface depends solely on the depth, not on the container's shape or size. This principle, known as hydrostatic pressure, arises because, in stationary fluids, there is no acceleration, meaning the forces within the fluid balance out. Only vertical forces, caused by the weight of the fluid above, contribute to pressure changes with depth.
When measuring pressure at two different levels within the fluid, the difference in pressure...
When measuring pressure at two different levels within the fluid, the difference in pressure...
Measurement of Fluid Pressure
Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
Pipe Flowrate Measurement: Problem Solving
A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is achieved...


