利用静电纺丝法制备了再生丝素和再生丝素/丝胶蛋白纤维,并对所得纤维进行了高湿后处理。采用扫描电镜分析了丝胶蛋白和高湿后处理对静电纺再生丝素蛋白纤维形貌的影响,采用拉曼光谱、X射线衍射和热失重分析研究了所得纤维微细结构及热性能。研究结果表明,添加丝胶蛋白有利于降低静电纺再生丝素蛋白纤维的直径及其分布,而高湿后处理对纤维的形貌没有明显影响;添加丝胶蛋白和/或高湿后处理有利于促进丝素发生向β-折叠构象的转变,并使纤维的结晶结构得到改善,从而进一步提高纤维的热稳定性。
Regenerated silk fibroin（RSF） and RSF/sericin（SS） fibers were electrospun and then post-treated under the high moisture.The influences of the addition of SS and high moisture treatment on the morphology of electrospun fibers were studied by scanning electron microscope（SEM）.The structure and thermal properties of the electrospun fibers were characterized by Raman spectroscopy,X-ray diffraction（XRD） and thermogravimetric analysis（TGA）.It is found that both the average diameter and diameter deviation for electrospun fibers decrease with the addition of SS,while the fiber morphology does not change obviously after the high moisture treatment.Furthermore,the conformational transition of RSF to β-sheet structure is induced by the addition of SS and/or high moisture treatment,resulting in the improvement of the crystal structure and mechanical properties of resultant electrospun fibers.
参考文献
| [1] | Zhou L;Chen X;Shao ZZ;Huang YF;Knight DP .Effect of metallic ions on silk formation the mulberry silkworm, Bombyx mori[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2005(35):16937-16945. |
| [2] | Xie F;Zhang HH;Shao HL;Hu XC .Effect of shearing on formation of silk fibers from regenerated Bombyx mori silk fibroin aqueous solution[J].International Journal of Biological Macromolecules: Structure, Function and Interactions,2006(3/5):284-288. |
| [3] | David Porter;Fritz Vollrath .Silk As A Biomimetic Ideal For Structural Polymers[J].Advanced Materials,2009(4):487-492. |
| [4] | Chang Seok Ki;InChul Um;YoungHwan Park .Acceleration effect of sericin on shear-induced /3-transition of silk fibroin[J].Polymer: The International Journal for the Science and Technology of Polymers,2009(19):4618-4625. |
| [5] | Hu X;Kaplan D;Cebe P .Dynamic protein-water relationships during beta-sheet formation[J].Macromolecules,2008(11):3939-3948. |
| [6] | Motta A.;Fambri L.;Migliaresi C. .Regenerated silk fibroin films: Thermal and dynamic mechanical analysis[J].Macromolecular chemistry and physics,2002(10/11):1658-1665. |
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