2012•Advanced materials researchOpen access

Effect of Concentration and Temperature on the Rheological Behavior of Collagen from Swimming Bladder of Grass Carp

Guo Yan Ren, Hui Yun Zhang, Jin Ying Guo, Huai Bin Kang

Abstract

Type I collagen was obtained from grass carp swimming bladder. Dynamic viscoelastic properties of the collagen solutions with concentrations of 0.1–1.0% (w/w) were characterized by means of oscillatory rheometry at temperatures ranging from 20 to 50°C. All collagen solutions showed a shear-thinning flow behavior. Both storage modulus (G’) and loss modulus (G’’) increased with the increase of frequency and concentration. The experiment results also showed the viscoelastic of collagen was similar to viscous behavior of liquid (G’>G’’) in low frequency and elasticity of solid (G’

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Key concepts: Rheometry, Viscoelasticity, Rheology, Dynamic modulus, Materials science, Dynamic mechanical analysis, Shear thinning, Elasticity (physics)