Wet-spinning of Regenerated Silk Fiber from Aqueous Silk Fibroin Solutions: Influence of Calcium Ion Addition in Spinning Dope on the Performance of Regenerated Silk Fiber

Huan Zhou; Zheng-zhong Shao; Xin Chen

doi:10.1007/s10118-014-1368-2

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Wet-spinning of Regenerated Silk Fiber from Aqueous Silk Fibroin Solutions: Influence of Calcium Ion Addition in Spinning Dope on the Performance of Regenerated Silk Fiber

Updated：2021-06-21

- Wet-spinning of Regenerated Silk Fiber from Aqueous Silk Fibroin Solutions: Influence of Calcium Ion Addition in Spinning Dope on the Performance of Regenerated Silk Fiber
- Chinese Journal of Polymer Science Vol. 32, Issue 1, Pages: 29-34(2014)
- Affiliations：
  
  State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
- Author bio：
  
  **Xin Chen (陈新), E-mail: chenx@fudan.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1368-2
  CLC：
- Received：29 January 2013，
  
  Revised：2013-04-01，
  
  Accepted：11 April 2013，
  
  Published：2014-01
- Accepted：
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Huan Zhou, Zheng-zhong Shao, Xin Chen. Wet-spinning of Regenerated Silk Fiber from Aqueous Silk Fibroin Solutions: Influence of Calcium Ion Addition in Spinning Dope on the Performance of Regenerated Silk Fiber[J]. Chinese Journal of Polymer Science, 2014, 32(1): 29-34.
DOI：

Huan Zhou, Zheng-zhong Shao, Xin Chen. Wet-spinning of Regenerated Silk Fiber from Aqueous Silk Fibroin Solutions: Influence of Calcium Ion Addition in Spinning Dope on the Performance of Regenerated Silk Fiber[J]. Chinese Journal of Polymer Science, 2014, 32(1): 29-34. DOI： 10.1007/s10118-014-1368-2.

摘要

Abstract

Ca(II) ions are added in the spinning dope to adjust the solidification rate of regenerated silk fibroin (RSF) solution during the wet-spinning process since Ca(II) ions are proved to be favorable to maintain the stable silk fibroin network in our previous work. The results show that when Ca(II)/RSF ratios are 1/50 and 1/20

the resulted RSF fibers exhibit good performance with the breaking energy more than 70 kJ/kg. However

higher Ca(II)/RSF ratio (for example

1/10) hinders the solidification of spinning dope and results in poor RSF fibers. These observations together with earlier papers from this laboratory confirm that to produce tough silk fibers the spinning conditions must allow sufficient time for the adjustment of silk fibroin molecular chains.

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