基扭纤维的制备及其功能应用
Kunkun Zhu1, Zuhuan Li1, Ling Nie2
1State Key Laboratory of New Textile Materials and Advanced Processing Technologies, National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China.
International journal of biological macromolecules
|July 27, 2024
概括
研究人员开发了具有增强机械性能和可调节功能的高性能素纤维. 这种新的制造方法提高了材料的强度,并为制造先进的有机-无机复合材料提供了一种新的方法.
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
- 生物材料工程 生物材料工程
背景情况:
- 素是一种可再生生物聚合物,具有生物相容性和生物降解性,但由于功能不足,其实际应用有限.
- 现有的基基材料往往难以满足现代材料应用的先进要求.
- 提高机械性能和引入新的功能对于扩大素的实用性至关重要.
研究的目的:
- 开发一种有效的方法来制造高性能素纤维.
- 在基纤维中引入磁性或导电性质.
- 为应对复合材料中有机和无机组件之间的不良兼容性所带来的挑战.
主要方法:
- 一个多步骤的策略,涉及化学预交联,湿扭和湿拉伸的素.
- 整合物理交叉连接以增强纤维特性.
- 在纤维形成之前,表面喷Fe3O4颗粒或Ag纳米线到基凝膜上进行功能化.
主要成果:
- 成功制造出具有光滑表面和可调整直径的高性能素纤维.
- 在基纤维中达到显著的机械强度 (144.6 MPa).
- 证明了磁性和导电性功能性素纤维的产生,由于无机颗粒的连续带状结构,具有高应力 (88.4%) 和应变 (91.6%) 保留.
结论:
- 开发的方法为制造高性能和功能性素纤维提供了一种新的方法.
- 该战略有效地克服了纯基的局限性,并改善了有机-无机复合材料的兼容性.
- 这项工作为基于基的先进材料开辟了新的途径,这些材料具有针对不同应用的定制性质.
相关概念视频
Mechanical Protein Functions
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.
Structural Protein Function
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
Formation of Intermediate Filaments
Intermediate filaments are cytoskeletal proteins with higher tensile strength and flexibility than microfilaments and microtubules. Unlike the other two cytoskeletal proteins, intermediate filament formation lacks the enzymatic activity to hydrolyze nucleotides like ATP and GTP to generate energy for polymerization. Therefore, the formation of intermediate filaments is multistep self-assembly. The involvement of any accessory proteins in intermediate filament formation has not yet been reported.
Types of Step-Growth Polymers: Polyesters
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Disassembly of Intermediate Filaments
Intermediate filaments (IFs) do not undergo spontaneous disassembly. Enzymes, kinases, and phosphatases add and remove phosphates from specific sites to regulate their disassembly. The IF concentration in the cytoplasm also regulates the disassembly. If the concentration crosses a threshold, it activates the protein kinases in the vicinity, allowing the phosphorylation of IFs.
Keratin proteins, found at the cell periphery near cell junctions, undergo a cycle of assembly and disassembly. In Type...
Keratin proteins, found at the cell periphery near cell junctions, undergo a cycle of assembly and disassembly. In Type...
Fibrous Proteins
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...


