Functional degradable biomimetic scaffolds have great potential applications in tissue regeneration. Nanofibrous electroactive biodegradable scaffolds from chitosan-grafted-aniline tetramer (CS–AT) were fabricated by an electrospinning method. The CS–AT was synthesized by amidation reaction between the carboxyl group of aniline tetramer and the amine group of chitosan. The structure of CS–AT copolymer was characterized by 1H NMR, FT-IR, TGA and XRD. UV-vis and cyclic voltammetry tests were used to demonstrate the electroactivity of CS–AT. The electrospun nanofibers were created from CS–AT solution. The morphology of the CS–AT nanofibers was observed by employing SEM and the results illustrated that the diameter of the nanofibers of deposited CS and CS–AT samples was controlled by both polymer concentration and the AT content. The biocompatibility of the materials was evaluated by cell adhesion and proliferation of C2C12 myoblasts and dog chondrocyte cells, and the results demonstrated that the CS–AT materials had good biocompatibility and greatly enhanced the cell adhesion and proliferation of C2C12 cells.
功能性可降解
生物仿生支架在组织再生领域具有巨大的应用潜力。通过电纺技术制备了来自
壳聚糖接枝
苯胺四聚体(CS–AT)的纳米纤维电活性可
生物降解支架。CS–AT是通过
苯胺四聚体的羧基与
壳聚糖的
氨基之间的酰胺化反应合成的。通过1H NMR、FT-IR、TGA和XRD对CS–AT共聚物的结构进行了表征。使用UV-vis和循环伏安测试来证明CS–AT的电活性。电纺纳米纤维由CS–AT溶液制成。通过
SEM观察CS–AT纳米纤维的形态,结果表明沉积的CS和CS–AT样品的纳米纤维直径受聚合物浓度和AT含量的控制。通过C2C12成肌细胞和大鼠软骨细胞的细胞粘附和增殖评估材料的
生物相容性,结果显示CS–AT材料具有良好的
生物相容性,并显著增强了C2C12细胞的粘附和增殖。