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Mechanical properties of biocompatible protein polymer thin films

Published online by Cambridge University Press:  31 January 2011

Christopher J. Buchko ,
Margaret J. Slattery ,
Kenneth M. Kozloff  and
David C. Martin
Christopher J. Buchko
Affiliation:
2022 H.H. Dow, Department of Materials Science and Engineering, Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, Michigan 48109-2136
Margaret J. Slattery
Affiliation:
2022 H.H. Dow, Department of Materials Science and Engineering, Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, Michigan 48109-2136
Kenneth M. Kozloff
Affiliation:
2022 H.H. Dow, Department of Materials Science and Engineering, Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, Michigan 48109-2136
David C. Martin
Affiliation:
2022 H.H. Dow, Department of Materials Science and Engineering, Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, Michigan 48109-2136
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Extract

A silklike protein with fibronectin functionality (SLPF) (ProNectin F®, Protein Polymer Technologies, Inc.) is a genetically engineered protein polymer containing structural and biofunctional segments. The mechanical properties and deformation mechanisms of electrostatically deposited SLPF thin films were examined by scratch testing, tensile testing, and nanoindentation. Scanning electron microscopy and scanned probe microscopy revealed that the macroscopic properties were a sensitive function of microstructure. The SLPF films were relatively brittle in tension, with typical elongation-to-break values of 3%. Nanoindentation data were fit to a power law relationship.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 1 , January 2000 , pp. 231 - 242
Copyright
Copyright © Materials Research Society 2000

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