Raghu, A. and Somashekar, R. and Sharath, A. (2007) Microrheological studies of regenerated silk fibroin solution by video microscopy. Journal of Polymer Science Part B: Polymer Physics, 45 (18). pp. 2555-2562. ISSN 1099-0488
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Abstract
We have carried out studies on the rheological properties of regenerated silk fibroin (RSF) solution using video microscopy. The degummed silk from the Bombyx mori silkworm was used to prepare RSF solution by dissolving it in calcium nitrate tetrahydrate-methanol solvent. Measurements were carried out by tracking the position of an embedded micron-sized polystyrene bead within the RSF solution through video imaging. The time dependent mean squared displacement (MSD) of the bead in solution and hence the complex shear modulus of this solution was calculated from the bead's position information. We present here the results of rheological measurements of the silk polymer network in solution over a frequency range, whose upper limit is the frame capture rate of our camera at full resolution. By examining the distribution of MSD of beads at different locations within the sample volume, we demonstrate that this probe technique enables us to detect local inhomogeneities at nanometre length scales, not detectable either by a rheometer or from diffusing wave spectroscopy. © 2007 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 45: 2555–2562, 2007
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Block copolymers, Microrheology, Particle Tracking Video Microscopy, Silk Fibroin Solution, Viscoelastic Properties, Viscosity |
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | C Swapna Library Assistant |
| Date Deposited: | 07 Sep 2019 09:59 |
| Last Modified: | 07 Sep 2019 09:59 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/7769 |
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