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ABSTRACT
By using the electro-spinning process on natural polymers, it is possible to obtain biodegradable membranes with potential applications in filters and scaffolds for tissue engineering. In this study, a comparison was made between the respective chemical, physical and thermal properties of the fibers from two sources of starch: One derived from a local, indigenous variety of potato (Diacol Capiro), native to the Boyacá region of Colombia (from here on referred to as “local starch”); the other, commercially available starch. A cationization of fibers was also carried out on the two starches. Chemical, physical and thermal properties were analyzed by Fourier transform infrared (FTIR), scanning electron microscopy (SEM), X-ray diffraction (DRX), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results showed the fibers were cationized with a highly amorphous state, with a heat resistance of 300°C from physicochemical changes generated in the fibers.
摘要
利用电纺丝技术在天然高分子材料上制备生物可降解膜，在组织工程用过滤器和支架中具有潜在的应用前景。在本研究中，对两种来源的淀粉纤维各自的化学、物理和热性能进行了比较：一种来源于当地土豆品种（DiacolCapiro），原产于哥伦比亚Boyac地区（在此称为“当地淀粉”），另一种是商业上可获得的淀粉。在两种淀粉上也进行了纤维的阳离子化。采用傅里叶变换红外光谱（FTIR）、扫描电镜（SEM）、X射线衍射（DRX）、热重分析（TGA）和差示扫描量热法（DSC）对材料的化学、物理和热性能进行了分析。结果表明，纤维经阳离子化后呈高度非晶态，其耐热性为300℃。
Acknowledgments
To technical group members Josue Romero (SEM), Adriana Tejeda (DRX), Luis Paez (FTIR) and Jhon Riveros (TGA and DSC), who contributed in the characterization of the fibers obtained in the present investigation.