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Rotational diffusion coefficient of rod-like polymer with a slight flexibility in semidilute and concentrated solutions

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Summary

A confined stiff chain model is suggested for the prediction of the rotational diffusion coefficient of a rigid rodlike polymer with a slight flexibility above the region of dilute solution (c≫1/L3). It shows a fairly good agreement with the experimental data of various polymers. Among them, PBLG and PBT with more rigidity are more consistent with the model when the log-jamming effect is considered. The predicted rotational diffusivity shows approximately the inverse seventh-power of length, which is less than 9 of Doi-Edwards tube model, but larger than the experimental value 5.7 of M-virus, while it shows the inverse power of concentration is a little larger than the value 2 of tube model except for the rodlike virus M-13.

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Authors and Affiliations

  1. Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea

    Seong Eun Chung & In Jae Chung

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  1. Seong Eun Chung
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  2. In Jae Chung
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Chung, S.E., Chung, I.J. Rotational diffusion coefficient of rod-like polymer with a slight flexibility in semidilute and concentrated solutions. Polymer Bulletin 21, 105–112 (1989). https://doi.org/10.1007/BF00700276

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  • DOI: https://doi.org/10.1007/BF00700276

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