用酸作为溶剂制备和表征聚3-酸) /花酸复合膜
Yulia V Zhuikova1, Vsevolod A Zhuikov1, Tatiana K Makhina1
1Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia.
International journal of biological macromolecules
|July 26, 2023
概括
这项研究开发了使用酸的新型聚3-基) 和酸复合物. 由此产生的生物材料具有可调节的性能,可用于先进的生物医学应用.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 聚合物化学 聚合物化学
背景情况:
- 聚3-基酸盐) 和奇托是广泛使用的生物相容,可再生的生物聚合物用于医疗用途.
- 结合不同类别的生物聚合物可以克服个体的局限性,并创建具有定制性质的材料.
- 选择合适的溶剂和条件以创建有效的生物聚合物复合材料存在挑战.
研究的目的:
- 调查聚3-基酸盐) /酸盐复合物的生成和特性.
- 评估这些新型复合材料的机械,热,物理化学和表面特性.
- 为了证明不同的酸盐含量如何影响特定生物医学应用的复合物质特性.
主要方法:
- 使用酸作为聚3-基酸和酸盐的常见溶剂.
- 制造的复合膜,其中包含不同比例的两种生物聚合物.
- 对机械,热,物理化学和表面性能进行了全面的分析.
主要成果:
- 复合膜的结晶性和疏水性比纯聚3-基酸盐低.
- 添加素增加了水分吸收,并降低了薄膜的接触角.
- 随着基托的加入,观察到机械性质的显著变化.
结论:
- 酸是一种有效的溶剂,用于制造聚3-基酸) /酸盐复合物.
- 复合材料的性能可以通过调整酸盐含量来精确控制.
- 这些可调节的生物聚合物复合材料对未来的生物医学应用具有重大前景.
相关概念视频
01:01Acid Halides to Carboxylic Acids: Hydrolysis
Hydrolysis of acid halides is a nucleophilic acyl substitution reaction in which acid halides react with water to give carboxylic acids. The reaction occurs readily and does not require acid or a base catalyst.
As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic acid...
As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic acid...
01:07Preparation of Acid Anhydrides
One of the methods for preparing symmetrical or unsymmetrical acid anhydrides involves the treatment of acid chlorides with the sodium salt of carboxylic acids. The reaction proceeds via a nucleophilic acyl substitution.
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...