Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 38, Issue 3-5, Pages 284-288Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2006.03.021
Keywords
silk fibroin; fibers; shearing; Raman spectroscopy; mechanical properties
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In this paper, the spinnable regenerated silk fibroin aqueous solution with high concentration was prepared and the regenerated silk fibers were obtained from the aqueous solution by two different spinning processes at ambient temperature. The orientation of these fibers was characterized by polarizing microscope. Their secondary structure was investigated by Raman spectroscopy and related mechanical properties were also measured. These data showed that shearing is an important step for increasing orientation and silk II (beta-sheet) structure, and the mechanical properties of the regenerated silk fibers can also be improved by shearing. (c) 2006 Elsevier B.V. All rights reserved.
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