摘要
以质量分数为98%的甲酸为溶剂,丝素和壳聚糖以不同质量分数及比例共混制备纺丝液进行静电纺丝,并用扫描电镜观察其形态结构。结果表明:当丝素和壳聚糖溶液质量比为70/30,两者质量分数分别为13%～17%和3%～5%时,都能获得连续纤维;当丝素和壳聚糖溶液质量分数分别为17%和4%,两者质量比高于50/50时,均能静电纺得连续纤维,纤维直径随壳聚糖含量的增加而减小,质量比低于50/50时,制成的纳米纤维中含有壳聚糖颗粒。采用红外光谱法测定了丝素/壳聚糖纳米纤维的结构,结果表明:壳聚糖与丝素之间有相互作用,经乙醇处理促进了丝素构象转变为β结构。
The electrospinning of silk fibroin （SF）/chitosan（CS）with different concentrations and composition ratios was performed with formic acid （98%（wt）） as a spinning solvent and the morphology was observed by SEM. The results indicate that when the composition ratio is 70/30 and the concentration of SF and CS is 13-17%（wt） and 3-5%（wt） respectively, continuous nanofibers can be obtained： when the concentrations of SF and CS are 17%（wt） and 4%（wt） and the composition ratio is above 50/ 50, blended solution ean he electrospun into continuous nanofibers, the diameter gradually decreasing with the addition of CS;when the composition ratio is lower than 50/50, the SF nanofibers containing CS bead are produced, the conformation of SF/CS nanofibers by ATR-IR is also investigated, which shows that there is reciprocity between SF and CS.The conformation of SF is changed into β -sheet after ethaenl treatment.
出处
《丝绸》
CAS
北大核心
2005年第12期28-30,共3页
Journal of Silk
基金
江苏省高校重点实验室开放研究课题(S8115033)
关键词
静电纺丝
再生丝素
壳聚糖
纳米纤维
形态结构
构象结构
Electrospinning
Regenerated silk fibroin
Chitosan
Nnnofiber
Morphology
Conformation
