Journal
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
Volume 87A, Issue 1, Pages 8-14Publisher
WILEY
DOI: 10.1002/jbm.a.31617
Keywords
atomic force microscopy; nanoidentation; tobacco mosaic virus; mechanical characterization; nanotube
Funding
- National Science Foundation [EPS-0296165]
- ACS Petroleum Research Fund [ACS PRF 40450-AC10]
- National Aeronautical and Space Administration (NASA), South Carolina EPSCoR office
- University of South Carolina NanoCenter Seed
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Mechanical properties of polyaniline (PANT) coated self-assembled tobacco mosaic virus (TMV) nanotubes were measured by nanoindentation with an atomic force microscope (AFM) probe. The elastic modulus Of PANI/TMV core-shell biocomposite tubes (outer diameter: 19 nm, inner diameter: 4 nm, PANI coating thickness: 0.5 run) was measured from the AFM force-displacement Curves. Structural characteristics of the, PANI coating, TMV tube, and their interface were studied by comparing the mechanical properties of individual constituent materials. Results showed that coating with a thin layer of PANT can change the physical and chemical properties of TMV nanotubes. The deformation behavior Of Such core-shell biocomposite tubes is discussed in conjunction With the obtained AFM force-displacement curves, van der Waals interaction between PANI and TMV, and mechanical properties of individual Constituent materials. (C) 2007 Wiley Periodicals, Inc.
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