来自基于桑基酸的低转变温度混合物的耐性超分子粘合剂
Pablo A Mercadal1,2,3, Maria Del Mar Montesinos4, Micaela A Macchione1,2,5
1Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, 5000 Córdoba, Argentina.
ACS materials letters
|August 9, 2024
概括
这项研究使用动态液体混合物中的酸 (TA) 开发了耐粘合剂. 这些新型生物粘合剂即使在 -196°C下也表现出强大,可重复的粘附性,显示出组织修复应用的前景.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 聚合物化学 聚合物化学
背景情况:
- 天然多,如酸 (TA),越来越多地被用作先进材料设计中的多功能组件.
- 开发具有增强性能的材料,如耐性,对于各种应用至关重要.
研究的目的:
- 研究酸在低过渡温度混合物 (LTTM) 中的使用,以制造耐粘合剂.
- 为了探索瓜诺辛的自我组装成超分子粘弹性材料,以TA为基础的LTTMs.
- 评估开发材料的粘合性能,低温稳定性,可注射性和生物相容性.
主要方法:
- 通过将酸与贝他因或胆化物结合,创建LTTM.
- 使用基于TA的LTTMs来形成超分子粘弹性材料,对guanosine进行有针对性的自我组装.
- 分子动力学模拟以分析结和结构性质.
- 在冷温度 (-196°C) 的粘附测试和使用纤维细胞体的体内细胞毒性测试.
主要成果:
- 通过基于TA的LTTM和瓜诺辛自组装成功形成具有高粘度的超分子粘弹性材料.
- 分子动力学模拟证实了强结合,有助于材料的稳定性.
- 在 -196 °C 达到长期,可重复的粘附,归因于TA的化学结构和LTTM特性.
- 已证明可注射性和低体外毒性,表明良好的生物相容性.
结论:
- 基于酸的LTTM在制造耐性,超分子粘合剂方面是有效的,具有出色的低温粘合力.
- 开发的生物粘合剂具有可取的特性,如可注射性和低毒性,突出了它们在组织修复方面的潜力.
- 这项研究为设计具有固有的生物活性性质的多功能软材料开辟了新的途径.
相关概念视频
03:12Freezing Point Depression and Boiling Point Elevation
34.6K
Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
34.6K
02:34Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility
44.2K
Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
44.2K
01:09Colloidal precipitates
535
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
535
02:56Intermolecular Forces and Physical Properties
20.7K
20.7K