Journal
MATERIALS LETTERS
Volume 65, Issue 15-16, Pages 2489-2491Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2011.05.017
Keywords
Silk fibroin; Ionic liquid; Polyurethane; Biomaterials; Polymers; Composite materials
Funding
- National Natural Science Foundation of China [50873079]
- Major State Basic Research Development Program of China (973 Program) [2009CB526402]
- Wuhan Textile University [093921]
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In order to blend the water-insoluble and biocompatible polyurethane (PU) with silk fibroin (SF) to prepare water-insoluble films as a biomaterial, the ionic liquid, 1-butyl-3-methylimidazolium chloride (BMIMCI), was used to prepare a SF/BMIMCI solution, which was directly blended with PU solution in N, N-dimethylformamide (DMF). Infrared spectroscopy indicated that the solution blending led to chemical bonding between the two polymers and a beta-sheet structure was the main conformation of SF in the films. The hydrophilicity of the films increased with the content of SF, based on contact angle measurements. The composite showed good blood compatibility in coagulation time tests and has potential biomaterial applications. (C) 2011 Published by Elsevier B.V.
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