纺织学报 ›› 2015, Vol. 36 ›› Issue (10): 1-6.
• 纤维材料 • 下一篇
摘要:
采用CaCl2-Formid Acid ( FA)溶解体系溶解脱胶蚕丝形成丝素溶液,再将溶液干燥、去盐,将丝素膜二次溶液于FA溶液获得丝素浓度分别为4%、6%、8%的纺丝液。采用滚筒收集装置进行静电纺丝,讨论不同浓度的丝素溶液的纺丝性能。通过流变、SEM、红外以及体外降解等测试手段表征丝素纳米纤维的性能。结果表明:低浓度纺丝液(4%)的粘度较低,会出现不连续液滴,高浓度纺丝液(8%)所纺纤维直径较粗。本试验所用6%5%纺丝液形成的纤维成形效果良好,直径主要集中在150~250nm区域内。红外分析表明,经75%乙醇处理后会促进丝素分子构象的转变,即从α-螺旋构象向β-折叠的转变。降解实验表明,纤维在PBS、放线菌蛋白酶溶液中的纤维形态发生明显变化,具有可生物降解性。
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