溶凝合成的/藻酸盐混合物:全面的物理化学和生物特性
Antonio D'Angelo1, Cecilia Mortalò2, Lara Comune3
1Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy.
Molecules (Basel, Switzerland)
|September 13, 2025
概括
无形的二氧化/藻酸盐混合物被合成用于生物医学用途. 较高的甲基酸盐含量提高了生物相容性,SiO2/SA5%显示了性能最佳平衡.
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
- 纳米技术纳米技术
背景情况:
- 具有定制性质的生物材料对于生物医学应用至关重要.
- 开发新的有机-无机混合材料是一个活跃的研究领域.
研究的目的:
- 合成和表征无形的二氧化/甲基酸盐 (SiO2/SA) 混合物.
- 评估这些杂交品的结构,表面,热,湿度反应和生物特性.
- 为了确定最佳的藻酸盐含量,以平衡功能性质和生物相容性.
主要方法:
- 具有不同SA含量 (2%, 5%, 8%) 的SiO2/SA杂交物的sol-gel合成.
- 使用FTIR,XRD,BET表面积分析,热分析 (TGA/DSC) 和水分吸附试验进行表征.
- 使用HaCaT细胞进行体外细胞毒性评估.
主要成果:
- FTIR和XRD证实了无形有机-无机网络的形成.
- 具体表面积从325 m2/g (SiO2/SA2%) 减少到104.3 m2/g (SiO2/SA8%). 它们的表面积从325 m2/g (SiO2/SA2%) 减少到104.3 m2/g (SiO2/SA8%).
- 湿度吸附能力和热稳定性随着SA含量增加.
- 细胞毒性随着SA含量增加而降低,SiO2/SA8%显示~15%的CVI,在无毒范围内.
- SiO2/SA5%表现出性能和生物相容性的最佳平衡.
结论:
- /藻酸盐混合物显示可调节的特性和降低的细胞毒性与增加的SA含量.
- SiO2 / SA5%混合物为生物医学应用提供了一个有前途的候选人.
- 进一步优化SA度可以提高生物相容性,同时保持理想的材料特性.
相关概念视频
Solvents
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
A...
Solution Formation
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective solubility...
This selective solubility...
Colloids
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
Factors Affecting Solubility
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
Solubility
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
Colloidal precipitates
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...


