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Nanomechanical and Microstructural Properties of Bombyx mori Silk Films

Published online by Cambridge University Press:  01 February 2011

Donna M. Ebenstein ,
Jaehyung Park ,
David L. Kaplan  and
Kathryn J. Wahl
Donna M. Ebenstein
Affiliation:
Chemistry Division, U.S.Naval Research Laboratory, Washington, DC 20375, USA
Jaehyung Park
Affiliation:
Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
David L. Kaplan
Affiliation:
Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
Kathryn J. Wahl
Affiliation:
Chemistry Division, U.S.Naval Research Laboratory, Washington, DC 20375, USA
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Abstract

Instrumented indentation and micro-Raman spectroscopy were used to investigate the mechanical and structural properties of Bombyx mori silk films. Twelve different films were prepared from B. mori silk fibroin protein using a variety of post-deposition processing treatments (e.g. soaking in methanol, soaking in water, stretching, and/or enzymatic etching). The results show that different treatments lead to changes in both the conformation of the silk fibroin protein and the mechanical properties of the films.

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