Journal of Textile Research ›› 2016, Vol. 37 ›› Issue (2): 1-6.

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Preparation and property research of regenerated silk fibroin filaments using CaCl2-formid acid system

  

  • Received:2015-09-22 Revised:2015-11-02 Online:2016-02-15 Published:2016-02-22

Abstract:

To improve the mechanica; properties of the regenerated silk fibroin filaments, CaCl2-formid acid (FA) system was adopted to dissolve degummed silk to obtain silk solution, and regenerated silk fivroin filaments were prepared by wet spinning process. The results indicated that different from that the present dissolved system can disslove silk to the molecular level, silk fibroin can be dissolved in CaCl2-FA at room temperature, more importantly, which is characterized by preserving the fibrils structure. The breaking stress of the regenerated fibroin was improved nearly by 1 time after stretching, compared with conventional dissolution methods. The surface of silk fibroin filaments was smooth and uniform, and the degradation speed in protease XIV solution was relatively slow. It is a simple, dfficient and environmentally friendly method to achieve continuous production of silk fibroin filaments.

Key words: CaCl2-formid acid, silk fibroin, wet spinning, fibril, property

CLC Number: 

  • TS141.8
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