相关实验视频
Updated: Sep 19, 2025

07:04
Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
Published on: November 11, 2022
2.6K
启用电荷平衡过渡的Janus水凝具有强大的湿组织粘附性和抗术后粘附性
Wan Peng1,2, Youjin Lai1, Yefeng Jiang1
1Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, PR China.
Bioactive materials
|June 18, 2025
概括
这项研究引入了一种新的Janus水凝贴片,具有明显的粘合剂和抗粘合剂层,可以实现强大的湿组织粘合,并且在没有复杂的化学设计的情况下防止术后粘合.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 粘合技术的技术 粘合技术
背景情况:
- 雅努斯水凝显示出对湿组织粘附和预防术后粘附的承诺.
- 目前的Janus水凝粘合剂需要复杂的化学修改以获得不对称的性能.
- 开发有效的粘合剂/抗粘合剂Janus水凝需要一个简化的策略.
研究的目的:
- 开发一种具有粘合性和抗粘合性质的新型Janus水凝组织贴片.
- 通过操纵具有相似组成的水凝层中的电荷平衡来实现不对称性.
- 评估水凝贴片在湿组织粘附,抗粘附,生物降解性和伤口愈合方面的性能.
主要方法:
- 通过叠加阳离子碳烯聚合物和阴离子 ε-聚氨酸 (EPL) 来构建一个Janus水凝.
- 在酸性条件下 (pH 2.85) 形成了底部粘合层 (AL),以获得强大的湿粘合.
- 在中性条件下形成了顶部抗粘合层 (MLT),以模仿zwitterionic结构.
主要成果:
- 该AL层表现出强大的粘附湿组织 (100.4 kPa) 和高爆压 (362.5 mmHg).
- 该MLT层提供了高达6周的有效抗术后粘附.
- 综合AL/MLT贴片显示生物降解性 (10周内),99.8%的抗菌活性,在伤口密封和修复方面表现优于纤维素凝.
结论:
- 使用电荷平衡切换的简单策略创建了一个有效的粘合剂/抗粘合剂Janus水凝.
- 这种水凝贴片在组织粘附,抗粘附和伤口愈合应用中提供了卓越的性能.
- 开发的Janus水凝具有非侵入性内部组织密封和促进伤口愈合的潜力.
相关概念视频
Adhesion
41.7K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Capillary action is a result of water’s adhesive tendencies. When a narrow...
41.7K
Tension Response at Adherens Junctions
2.9K
The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
2.9K

