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生物基PLA/PBS/PBAT三级混合物添加纳米酸:热,物理和机械研究

Pei-Hua Chen^1,2, Chin-Wen Chen³, Hsu-I Mao³

¹Department of Biomedical Engineering, National Taiwan University, Taipei 106319, Taiwan.

|January 17, 2024

概括

这项研究研究了用于骨移植的新型生物基聚合物混合物. 添加纳米酸改善了混合物特性,表明了用于组织再生的有希望的配方.

科学领域:

生物材料科学生物材料科学
聚合物化学聚合物化学
纳米技术纳米技术

背景情况:

开发先进的生物材料对于骨组织工程至关重要.
生物基聚合物为传统材料提供可持续的替代品.
纳米酸 (nHA) 的整合可以增强聚合物支架的性能.

研究的目的:

研究聚乳酸 (PLA),聚乙烯糖 (PBS) 和聚乙烯基酸盐-联合甲酸盐 (PBAT) 混合物的物理和机械性能.
评估不同纳米酸 (nHA) 含量对这些生物基聚合物混合物的影响.
为潜在的骨移植材料应用确定最佳配方.

主要方法:

使用双螺杆挤出机制备PLA/PBS/PBAT/nHA混合物.
使用里叶变换红外光谱 (FTIR),X射线衍射 (XRD),差分扫描热量计 (DSC),扫描电子显微镜 (SEM) 和传输电子显微镜 (TEM) 的表征.
评估机械性能 (拉力和冲击强度),热稳定性 (TGA) 和吸水能力.

主要成果:

FTIR和XRD证实了混合物中所有成分的存在.
DSC分析揭示了受nHA的影响的结晶行为.
机械测试表明,nHA添加改善了拉力和冲击强度,作为核化剂.
SEM和TEM显示,nHA颗粒在聚合物矩阵内分散得很好.
TGA证实了热稳定性,水吸收测试表明,随着nHA的添加,增强了水友性.

结论:

这项研究成功地特征了新型的生物基聚合物混合物,其中包括纳米酸.
添加nHA显著改善了PLA/PBS/PBAT混合物的机械性能,结晶性和水友性.
调查的配方显示,作为骨移植应用的潜在材料有前途,需要进一步研究.

关键词:

在PBAT和PBAT之间公共服务服务 (PBS)这就是为什么PLA PLA PLA.机械强度机械强度机械强度没有nHAHA的物理属性物理属性聚合物混合物的聚合物混合物.

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