相关实验视频
Updated: Jan 29, 2026

05:11
Inkjet-printed Polyvinyl Alcohol Multilayers
Published on: May 11, 2017
13.1K
耐用和坚固的简斯膜具有不对称的透性,基于聚 (乙烯化) /聚乙烯醇用于油水分离
Yawen Chang1, Ruihong Sun1, Fujuan Liu1
1National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, 199 Ren-Ai Road, Suzhou 215123, China.
Materials (Basel, Switzerland)
|January 28, 2026
概括
具有不对称的湿透能力的Janus膜有效地分离油水混合物和乳液,达到99%以上的效率. 优化的膜显示了可持续水资源管理的稳定性能.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业化加剧了水污染和石油泄漏和废水造成的水资源短缺.
- 有效的油水分离对于生态可持续性至关重要.
- 亚努斯膜由于其独特的特性,提供了一个有前途的解决方案.
研究的目的:
- 通过层层的电制备具有不对称的湿透性的简斯膜.
- 为了研究疏水/亲水层厚度比对膜性能的影响.
- 为了确定一个优化的Janus膜配置,以实现高效的油水分离.
主要方法:
- 一层一层的电,以创建简斯膜.
- 机械性能测试 (断裂应力,应变).
- 油水混合物和乳液的分离流量和效率测量.
- 循环分离试验,以评估长期稳定性.
主要成果:
- 确定了一种最佳的疏水和亲水层厚度比率为4:6.
- 优化的膜表现出高的断裂应力 (99 MPa) 和应变 (55.63%).
- 油水混合物和乳液的分离效率始终超过99%.
- 在50个循环中保持了稳定的分离流量 (1888.22 L m-2 h-1 油水,1042.66 L m-2 h-1 乳液) 和效率.
结论:
- 优化不对称的湿透能力的Janus膜在油水分离方面表现出色.
- 开发出来的膜显示出高的机械强度,流量和效率.
- 这些膜为油水分离和环境修复提供了实用且稳定的解决方案.
相关概念视频
Water: A Bronsted-Lowry Acid and Base
58.5K
The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions:
58.5K
Brick Durability, Strength, and Appearance
659
Brick durability, strength, and appearance are crucial factors in construction, influencing the choice of bricks for specific applications. The process of freeze-thaw, for instance, significantly affects brick durability. This phenomenon occurs when water absorbed by a brick expands as it freezes, potentially causing damage when it melts and refreezes. Bricks are graded for durability: SW-grade bricks are the most durable, offering high strength and low water absorption, followed by MW-grade...
659
Rotation of Asymmetric Top
1.5K
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
1.5K
Asymmetric Lipid Bilayer
9.8K
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
9.8K
States of Water
56.8K
Water exists in any one of the three classical states: solid (ice), liquid (water), and gas (steam or water vapor). The state of water depends on i) the intermolecular forces that draw molecules together and ii) the kinetic energy that leads to movements that pull them apart.
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
56.8K
Water and Mineral Acquisition
35.6K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
35.6K

