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优化电导PPy-PCL支架,以提高组织工程性能.

Ana M Muñoz-González¹, Dianney Clavijo-Grimaldo^2,3, Sara Leal-Marin^4,5

¹Faculty of Engineering, Universidad Nacional de Colombia, Bogotá, Colombia.

Journal of biomedical materials research. Part B, Applied biomaterials

|November 22, 2024

概括

研究人员开发了用于组织再生的导电性聚烯-聚烯酸乙烯 (PPy-PCL) 支架. 优化制造提高了导电性,机械强度和水性,支持细胞生长而无毒性.

关键词:

导电性电导体的电导体.电力旋转是指电力旋转.聚卡普罗拉克托尼是一种多重的产物.聚乙烯 (polypyrrole) 是一种聚乙烯 (polypyrrole) 的一种.脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架,脚手架.

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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.
聚合物化学聚合物化学

背景情况:

导电材料在增强组织再生方面表现有前途.
开发功能性支架需要优化材料特性和制造工艺.

研究的目的:

创建和优化用于组织工程应用的电导聚烯-聚烯-聚烯酸乙烯 (PPy-PCL) 支架.
研究加工参数对脚手架导电性,形态,机械性能和生物相容性的影响.

主要方法:

使用了Box-Behnken响应表面方法,用于在聚烯 (PPy) 在聚烯酸 (PCL) 基质中进行现场化学聚合.
使用富里埃变换红外光谱 (FTIR),能量分散X射线 (EDX) 和扫描电子显微镜 (SEM) 描述了脚手架的组成和形态.
评估了机械性质 (拉伸强度,Young的模量),水友性和细胞活力 (MTT和Alamar Blue测定L929纤维细胞和骨髓介质干细胞).

主要成果:

在优化的PPy-PCL脚手架中达到2.542 mS/cm的最大导电率.
在SEM中,PCL纤维中发现了均的PPy分散.
与纯PCL相比,优化的脚手架显示出更高的抗拉强度和模量,以及更好的水友性.
细胞活力测定显示没有细胞毒性和增加的代谢活性,表明支持细胞功能.

结论:

在PCL矩阵中的PPy现场合成,通过制造参数进行优化,产生具有增强结构和功能性质的导电支架.
这些PPy-PCL支架适用于组织工程应用,因为它们的导电性,机械完整性,水友性和生物相容性得到了改善.