Dynamical structure factor of a solution of charged rod-like polymers in the isotropic phase

Tadakazu Maeda; Masao Doi

doi:10.1117/12.57315

1 May 1991 Dynamical structure factor of a solution of charged rod-like polymers in the isotropic phase

Tadakazu Maeda, Masao Doi

Proceedings Volume 1403, Laser Applications in Life Sciences; (1991) https://doi.org/10.1117/12.57315
Event: Laser Applications in Life Sciences, 1990, Moscow, Russian Federation

Abstract

A theory of the static and dynamical structure factors of a charged rod suspension was developed. The theory treats the isotropic and depolarized scattering in a unified way and reduces to our previous theory for uncharged rods in the limit of zero polymer charge or zero Debye length. The evaluation of the structure factors and their initial decay rates is quite easy and straightforward. The following are the major conclusions. (i) It is well to approximate a charged rod with an uncharged one having an effective diameter beff the value of which is smaller for the depolarized scattering than for the polarized one. (ii) For strongly charged rods our theory is valid when the solvent ionic strength is higher than 1 mM. (iii) The theory does not give the correlation function a slow tail which has been observed experimentally. 1.

Citation Download Citation

Tadakazu Maeda and Masao Doi "Dynamical structure factor of a solution of charged rod-like polymers in the isotropic phase", Proc. SPIE 1403, Laser Applications in Life Sciences, (1 May 1991); https://doi.org/10.1117/12.57315

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