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Rheology and microstructural studies of regenerated silk fibroin solutions

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Title Rheology and microstructural studies of regenerated silk fibroin solutions
 
Creator NISAL, A
KALELKAR, C
BELLARE, J
LELE, A
 
Subject Rheology
Microrheology
Silk
Interfacial rheology
BOMBYX-MORI SILKWORM
VIDEO MICROSCOPY
MIDDLE DIVISION
INTERFACES
RHEOMETRY
PROTEIN
SOL
 
Description Regenerated silk fibroin solutions (RSF) are produced by dissolving degummed silk fibers in water. We have observed that RSF solutions at a concentration less than 15 % by weight exhibit an unusual gel-like response in conventional shear rheology measurements. At higher concentrations, the response is predominantly viscous (or liquid-like). We have probed this counterintuitive behavior of silk fibroin solutions by using microrheology, and interfacial rheometry. Scattering techniques were also used to understand the microstructure of RSF solutions as a function of the concentration. Our studies suggest that the gel-like response of the RSF solution may result from the formation of an interfacial film at the air-solution interface, which dominates the bulk rheological response.
 
Publisher SPRINGER
 
Date 2014-10-15T14:06:20Z
2014-10-15T14:06:20Z
2013
 
Type Article
 
Identifier RHEOLOGICA ACTA, 52(10-12)833-840
0035-4511
1435-1528
http://dx.doi.org/10.1007/s00397-013-0723-5
http://dspace.library.iitb.ac.in/jspui/handle/100/15060
 
Language en