ISSN:
0887-6266
Keywords:
silk fibroin
;
FT-IR spectroscopy
;
hydrogen bonds
;
polyacrylonitrile
;
poly(acrylonitrile-co-methyl acrylate)
;
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
FT-IR spectroscopy was used to study the specific interactions in polyacrylonitrile-silk fibroin (PAN-SF) and poly(acrylonitrile-co-methyl acrylate)-silk fibroin (PANMA-SF) blends. No specific interaction was found in PAN-SF blends. In PANMA-SF blends, however, a new 1703 cm-1 band, assigned to be hydrogen-bonded carbonyl groups of PANMA, appears, and its intensity depends on the compositions of the blends and the MA contents in PANMA. Furthermore, when the sample was heated, considerable changes in position and intensities of the hydrogen-bonded bands, in both stretching regions of the carbonyl group of PANMA and the hydroxl group of SF, were found, and these changes were irreversible on cooling. Finally, we suggested that the bands of hydrogen bonds in PANMA-SF blends may be the average result of several kinds of possible hydrogen bondings. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 1405-1414, 1997
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
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