一种纤维素离子凝,具有机械强度和极端温度耐受性,用于电子皮肤
Ruyu Bai1, Haibo Jiang1, Minxin Wang1
1Key Laboratory on Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang, 110142, P. R. China.
Macromolecular rapid communications
|May 20, 2025
概括
这项研究引入了一种具有特殊机械强度和离子导电性的新型纤维素离子凝. 它在极端温度下达 -196°C时保持灵活性,使强大的灵活电子设备成为可能.
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:
- 由聚合物和离子组成的离子凝对于灵活的电子产品至关重要.
- 目前的离子凝在机械强度和低温性能方面存在局限性.
研究的目的:
- 开发一种基于纤维素的离子凝,具有增强的机械性能和低温耐受性.
- 调查机械诱导对齐和Ca2+复杂化的作用.
主要方法:
- 使用机械诱导的纤维素分子链的对齐.
- 包括离子 (Ca2+) 复合相互作用.
- 描述机械性能 (抗拉强度,弹性模量) 和离子导电性.
主要成果:
- 实现了纤维素离子凝,其抗拉强度为6.84 MPa,弹性模量超过100 MPa.
- 已证明高离子导电率为31.7mS·cm-1.
- 具有显著的抗性,在 -196°C 保持灵活性.
结论:
- 开发的纤维素离子凝提供了卓越的机械强度,离子导电性和极端温度耐受性.
- 这种材料显示出在恶劣环境下稳定灵活的电子设备的巨大潜力.
- Ca2+复合网络是离子凝增强性质和稳定性的关键.
相关概念视频
Types of Intermediate Filaments
3.7K
The intermediate filaments are an essential component of the cytoskeleton. Presently six types of intermediate filament have been identified. Type I and II are acidic and basic keratin proteins. Type III is of mesodermal origin and comprises four proteins: vimentin, desmin, glial fibrillary acidic protein (GFAP), and peripherin. Vimentin is commonly found in mesenchymal cells, desmin in muscle cells, GFAP in astrocytes, while peripherin is found in peripheral nervous system neurons (PNS). Type...
3.7K
Fibril-associated Collagen
2.7K
Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
2.7K
Elastin is Responsible for Tissue Elasticity
2.4K
Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. The main property of elastin is that it will return to its original shape after being stretched or compressed. Elastic fibers are prominent in elastic tissues found in skin and the elastic ligaments of the vertebral column.
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
2.4K
Cell-matrix's Response to Mechanical Forces
2.7K
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
2.7K
Fibrous Proteins
3.9K
Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...
3.9K
The Electrical Double Layer
241
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
241


