期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 105, 期 3, 页码 1605-1610出版社
WILEY
DOI: 10.1002/app.26176
关键词
proteins; mechanical properties; crystal structure; fibers; solution properties
资金
- National Research Foundation of Korea [과06B2507] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Regenerated silk fibroin (SF) filaments could be prepared by wet spinning in common solvent/ coagulation system. SF was directly dissolved in mixture solvent of phosphoric acid and formic acid (20/80-30/70 ratio) and coagulated in methanol bath. The concentration and stability of SF dope solution have been studied by varying the mixture ratios of these solvents in accordance with elucidating the role of formic acid in the mixture solvent system. Morphological structure as well as crystalline structure of the regenerated filament was examined using SEM and XRD analyses. As a result of tensile test, the regenerated SF filament, which was made by one-step dissolution and coagulation process, had good mechanical properties, 2.3 gf/d tenacity and 18% breaking strain. In this study, a simple wet spinning method which enables to apply to practical production has been reported for the preparation of the regenerated SF filament. (c) 2007 Wiley Periodicals, Inc.
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