Rheology of Semi-dilute Solutions of Calf-thymus DNA

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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 $τ_{\circ}$ and $τ_{1}$. The ratio $\frac{τ_{\circ}}{τ_{1}} \sim$ 5 is seen to be fairly constant on changing the temperature from 20$^{\circ}$C to 30$^{\circ}$C. The shear rate dependence of viscosity can be fitted to the Carreau model.
6 pages inclusive of 7 eps figures

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Soft Condensed Matter, Quantitative Biology

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http://salesiana.dossiersoluciones.com/handle/123456789/17192

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0012461
 http://arxiv.org/abs/cond-mat/0012461

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arXiv