离子玻璃形成器显示了脆弱性和非指数的α放松之间的反向关系
Sophie G M van Lange1, Diane W Te Brake1, Eline F Brink1
1Physical Chemistry and Soft Matter, Wageningen University and Research, Wageningen, The Netherlands.
Nature communications
|January 8, 2026
概括
离子相互作用逆转了聚合物中玻璃过渡脆弱性和放松非指数性之间的关系. 这一发现表明,新材料具有可调节的性能,可用于先进的应用.
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
- 物理化学 物理化学
背景情况:
- 超冷的液体在玻璃过渡温度下转化为无形固体.
- 玻璃成型器根据粘度变化被分类为强或脆弱.
- 液体脆弱性和放松非指数性之间的相关性已经确立,但仍在争论中.
研究的目的:
- 研究离子材料的脆弱性和放松之间的关系.
- 探索离子相互作用在玻璃过渡中的作用.
- 为了识别新的材料,结合加工性和机械消散.
主要方法:
- 通过离子相互作用交叉连接的带电聚合物的合成.
- 玻璃过渡和机械放松动态的表征.
- 对离子液体,聚合离子液体和离子体的调查.
主要成果:
- 离子材料在脆弱性和放松性非指数性之间表现出一个反向的关系.
- 高电荷的聚合物表现出强烈的玻璃过渡与拉伸的机械放松.
- 充电材料普遍显示与非充电对应物相反的趋势.
结论:
- 长距离的离子相互作用在玻璃化中起着至关重要的作用.
- 这些发现挑战了玻璃成型材料中现有的相关性的普遍性.
- 这项研究为设计具有定制性质的新材料铺平了道路.
更多相关视频
08:55Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
8.9K
06:48Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion
Published on: May 9, 2025
1.1K
相关概念视频
Stress-Strain Diagram - Brittle Materials
3.8K
Brittle materials, including glass, cast iron, and stone, exhibit unique characteristics. They fracture without considerable change in their elongation rate, indicating that their breaking and ultimate strength are equivalent. Such materials also show lower strain levels at the point of rupture. The failure in brittle materials predominantly results from normal stresses, as evidenced by the rupture created along a surface perpendicular to the applied load. These materials do not display...
3.8K
Atomic Nuclei: Types of Nuclear Relaxation
906
Nuclear relaxation restores the equilibrium population imbalance and can occur via spin–lattice or spin–spin mechanisms, which are first-order exponential decay processes.
In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers...
In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers...
906
Plastic Behavior
517
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
517
Crystal Field Theory - Octahedral Complexes
30.6K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.6K
