设计纳米粘合剂,以实现快速,通用和强大的水凝粘合
Zhao Pan1,2, Qi-Qi Fu3, Mo-Han Wang4
1Department of Chemistry, New Cornerstone Science Laboratory, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China.
Nature communications
|September 4, 2023
概括
新的纳米粘合剂为各种表面提供了快速,坚固和通用的水凝粘合. 这些先进的纳米粒子能够在几秒钟内形成强大的结合,这对于生物医学和工程应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
背景情况:
- 水凝粘合对于先进的应用至关重要,但在速度,强度和多功能性方面面临挑战.
- 现有的基于纳米粒子的粘合剂往往无法满足这些苛刻的要求.
研究的目的:
- 开发新的纳米粘合剂,以实现快速,坚固和通用的水凝粘合.
- 为了克服当前纳米粒子用于水凝应用的局限性.
主要方法:
- 通过调制水凝力学来设计纳米体.
- 使用纳米颗粒的表面化学激活.
- 在不经预处理的情况下,对各种工程固体和生物组织进行粘附测试.
主要成果:
- 纳米粘合剂在几秒钟内实现了强大的水凝粘合.
- 在任意工程固体和生物组织上证明了有效的粘附.
- 在基于水凝的机器中成功应用,用于体内血液流量监测.
结论:
- 开发的纳米体为基于水凝的工程提供了一个有前途的战略.
- 它们的生物相容性和抗微生物特性增强了它们在生物医学领域的潜力.
- 这项技术解决了实现快速,强大和多功能水凝粘附的关键挑战.
相关概念视频
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,...
Surface Tension, Capillary Action, and Viscosity
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
Micelles
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...


