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Preparation and characterization of electrospun silk fibroin/sericin blend fibers

Published online by Cambridge University Press:  11 November 2011

Yichun Hang ,
Yaopeng Zhang ,
Yuan Jin ,
Huili Shao  and
Xuechao Hu
Yichun Hang
Affiliation:
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Yaopeng Zhang
Affiliation:
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Yuan Jin
Affiliation:
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Huili Shao*
Affiliation:
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
Xuechao Hu
Affiliation:
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: hlshao@dhu.edu.cn
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Abstract

In this work, the silk fibroin/sericin (SF/SS) blend aqueous solutions with different SF/SS mass ratios (100/0, 90/10, 85/15, 75/25, and 65/35) were prepared and electrospun to get regenerated fibers. It was found that the addition of SS in the SF solution could increase the apparent viscosity of the solution and improve its electrospinnability so that the fine uniform electrospun SF/SS fibers could be obtained. The quantitative analysis result of Raman spectroscopy showed that the presence of SS facilitated the conformational transition of SF from random coil/α-helix structure to β-sheet structure. Combined with the differential scanning calorimetry result, it was further hypothesized that SS could affect the structural change of SF by dehydrating SF and inducing the formation of hydrogen bonds between SF molecules. Consequently, SS also played an important and positive role in the thermal and mechanical properties of the resultant SF/SS fibers.

Keywords

FiberMorphologyMacromolecular structure
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 23 , 14 December 2011 , pp. 2931 - 2937
Copyright
Copyright © Materials Research Society 2011

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