通过聚合物纠在共平面纳米封闭中的固体和自我愈合的水凝
Chen Liang1,2, Volodymyr Dudko3, Olena Khoruzhenko3
1Department of Applied Physics, Aalto University, Espoo, Finland.
Nature materials
|March 7, 2025
概括
研究人员通过使用纳米隔离开发出一种硬的,自我愈合的水凝. 这种突破性的材料实现了高机械强度和100%的愈合效率,为先进的应用打开了大门.
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
- 纳米技术纳米技术
背景情况:
- 生物组织表现出机械强度,度和自我愈合能力的非凡组合.
- 合成水凝通常在由于抑制链/键动态而达到高刚度时会损害自我愈合特性.
研究的目的:
- 设计一种合成水凝,同时具有高刚性和自我愈合特性.
- 为了克服当前硬化方法在水凝开发中的局限性.
主要方法:
- 使用共平面纳米封闭来诱导高度单体溶液中的聚合物纠.
- 采用一个完全分层的合成赫托里特纳米板的支架,以剪切定向成一个宏观的单域,作为封闭结构.
- 在这个纳米封闭的脚手架内聚合单体溶液.
主要成果:
- 实现了硬的水凝,其模量为50 MPa,抗拉强度高达4.2 MPa.
- 证明自愈效率高达100%,尽管硬度很高.
- 在各种基板上表现出高粘附切削强度.
- 成功地嵌入了像MXenes这样的体材料,以获得新的功能.
结论:
- 纳米封闭方法可以制造刚性和自我愈合的水凝.
- 这种方法可用于各种聚合物和溶剂.
- 开发的水凝对软机器人,增材制造和生物医学工程的应用具有重大潜力.
更多相关视频
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,...
Dehydration Synthesis
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.Synthesis of carbohydratesSugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from one reactant...
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...


