一个透明的水凝离子导体,具有高水和自我愈合能力
Yangwoo Lee1, Ju-Hee So2, Hyung-Jun Koo1
1Department of Chemical & Biomolecular Engineering, Seoul National University of Science & Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea.
Materials (Basel, Switzerland)
|January 23, 2024
概括
这项研究开发了一种透明的,离子导电的水凝,使用阿加,糖和盐,显著减少水损失. 这种新的水凝为先进的设备应用提供了增强的机械性能和自我修复能力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 生物医学工程 生物医学工程
背景情况:
- 水凝广泛用于各种应用,但遭受脱水和机械强度差.
- 开发具有增强的保留水和导电性的水凝对于其实际实施至关重要.
研究的目的:
- 为了创建一个透明的,离子导电的水凝,抑制水损失.
- 提高水凝的机械性能和自我愈合能力.
- 为了证明开发的水凝在压力传感器中的潜在应用.
主要方法:
- 合成了以糖糖和化 (NaCl-Suc/A水凝) 添加的以糖糖为基础的水凝.
- 在干燥条件下研究了保留水的特性.
- 测量了机械性能,离子导电性和自我愈合行为.
- 使用水凝制造并测试了一种透明和灵活的压力传感器.
主要成果:
- 在60°C干燥4个小时后,NaCl-Suc/A水凝保持了45%的吸水率.
- 达到了1.6 × 10-2 S/cm的离子导电率,优于原始的亚加罗斯.
- 在机械性能和自我愈合能力方面表现出显著的改进.
- 成功制造了一个功能透明和灵活的压力传感器.
结论:
- 开发的NaCl-Suc/A水凝有效地解决了水凝脱水和机械限制的问题.
- 该材料对先进应用具有有前途的性能,包括灵活的电子和传感器.
- 这项研究有助于开发更强大,更耐用的基于水凝的设备.
相关概念视频
Solvents
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
A...
Adhesion
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow glass...
Capillary action is a result of water’s adhesive tendencies. When a narrow glass...
Cohesion
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a surface,...
On a surface,...
Molecular Shape and Polarity
Dipole Moment of a Molecule
Intermolecular Forces
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 bonds, and dispersion...
Solubility
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, atoms, and/or ions)...
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, atoms, and/or ions)...


