聚电解质刷中的未冷水的分子起源
George Mallinos1, Md Golam Kibria1, Saveen Jayaweera1
1School of Polymer Science and Engineering, The University of Akron, Akron, Ohio 44325, United States.
Langmuir : the ACS journal of surfaces and colloids
|March 6, 2026
概括
聚电解质刷在零度以下的温度下保留了大量的未结冰水. 这项研究量化了充电聚合物网络中的水限制,这对于抗结冰涂层至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 表面科学是一门学科.
背景情况:
- 聚电解质刷 (PEBs) 显示出抗结冰和冷滑的潜力.
- 在零度以下的温度下,在PEB中直接测量非冷水是有限的.
研究的目的:
- 调查聚二甲基氧乙烯三甲基 (PMETA) 刷的水结行为.
- 在零度以下的温度下量化非冷水分和聚合物体积分.
主要方法:
- 使用定制制造的低温减弱总反射率红外光谱系统.
- 分析了水的振动模式,以了解结行为.
- 测量的聚合物体积分数随温度变化而变化.
主要成果:
- 在PMETA刷子中保留了25-35体积. %的水,即使在 -60 °C.
- 在充电的聚合物网络中显示出大量的水封闭.
- 观察到聚合物体积分数的变化作为温度的函数.
结论:
- 在零度以下的温度下,PMETA刷子会显著保留水分.
- 这些发现有助于更好地了解PEB中的界面水.
- 建议对抗结冰和冷滑脂表面的设计策略.
相关概念视频
Aqueous Solutions and Heats of Hydration
18.5K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
18.5K
Molecular Shape and Polarity
76.7K
Dipole Moment of a Molecule
76.7K
Van der Waals Interactions
72.7K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
72.7K
Intermolecular Forces
75.4K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
75.4K
Solubility
21.7K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
21.7K
Bond Polarity, Dipole Moment, and Percent Ionic Character
36.1K
Bond Polarity
36.1K


