Rheology of Semi-dilute Solutions of Calf-thymus DNA

2000/12/25 by Ranjini Bandyopadhyay, Bandyopadhyay, Ranjini, A. K. Sood +1
Biochemistry, Genetics and Molecular Biology · Chemical Engineering · Materials Science · Mathematics · Physics and Astronomy · #FOS: Biological sciences #FOS: Physical sciences #Fractional Differential Equations Solutions #Material Dynamics and Properties #Quantitative Biology (q-bio) #Rheology and Fluid Dynamics Studies #Soft Condensed Matter (cond-mat.soft) #cond-mat.soft #q-bio

paper · pdf · doi:10.48550/arxiv.cond-mat/0012461

6 pages inclusive of 7 eps figures

arxiv created 2000/12/25 · openalex publication_date 2000/12/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the rheology of semi-dilute solutions of the sodium salt of calf-thymus DNA in the linear and nonlinear regimes. The frequency response data can be fitted very well to the hybrid model with two dominant relaxation times τ_∘ and τ₁. The ratio \fracτ_∘τ₁ ∼ 5 is seen to be fairly constant on changing the temperature from 20^∘C to 30^∘C. The shear rate dependence of viscosity can be fitted to the Carreau model.

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