静电纺再生丝素纳米纤维形态结构的研究

以98％甲酸为溶剂溶解再生丝素室温干燥膜后，采用静电纺丝纺制丝素纳米纤维；采用扫描电镜观察其形态结构：研究并分析了纺丝液质量分数、电压、喷丝头到收集网的距离、纺丝管口径对纤维直径及形态的影响。结果表明：质量分数为11％-19％的纺丝液静电纺丝均能获得丝素纳米纤维，质量分数为11％、13％，电压为32kV，固化距离为7cm时，能够获得平均直径分别为91、96nm的纳米纤维：纤维直径随纺丝液质量分数的增加而增大，随电压的增大而减小，可根据纺丝液质量分数和电压选择合适的固化距离和管口径。

Study on the Morphology Structure of Regenerated Silk Fibroin Nano-fiber by Static Spinning

After the regenerated silk fibroin air-dried membrane dissolving in formic acid (98wt%) solution, the silk fibroin nano-fiber is prepared by static spinning, whose morphology is studied by SEM. The influence of spinning solution weight ratio, voltage,distance between spinneret and collect net and the spinneret diameter on the fiber diameter and morphology are investigated andanalyzed in the paper. The results show that the spinning solution with weight ratio from 11% to 19% can prepare silk fibroin nano-fiber When the voltage is 32kV, solidifying distance 7cm and the weight ratio is 11% and 13%, the average diameter of obtainingnano-fiber is 91nm and 96nm, respectively. The fiber diameter is increased with its spinning solution wt ratio, and decreased withits voltage, so the solidifying distance and spinning tube diameter can be selected basing on solution wt ratio and voltage.