Journal
BIOMACROMOLECULES
Volume 11, Issue 1, Pages 1-5Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bm900840h
Keywords
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Funding
- National Natural Science Foundation of China [20974025, 20434010, 20525414]
- Program for New Century Excellent Talents in University of MOE of China [NCET-06-0354]
- Program for Changjiang Scholars and Innovative Research Team in University of MOE of China [IRT-06-12]
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Regenerated silk fibroin (RSF) fibers were obtained by extruding a concentrated aqueous silk fibroin solution into an ammonium sulfate coagulation bath. A custom-made simplified industrial-type wet-spinning device with continuous mechanical postdraw was used. The effect of dope concentration, coagulation bath, extrusion rate, and postdraw treatment on the morphology of RSF fiber was examined. The results showed that although RSF fiber could be formed with dope concentration between 13 and 19% (w/w), the ones spun from 15% RSF solution showed the most regular morphology being dense and homogeneous in cross-section with a smooth surface and a uniform cylindrical shape. Though it had little effect on morphology, postdraw treatment especially under steam, significantly improved the mechanical properties of the RSF fibers.
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