Abstract
An exact expression for the autocorrelation function of the intensity of light scattered from a solution of large, flexible polymers is obtained using a simple “mean-force” model. A Q 2 dependence of the reciprocal relaxation time is found for both small values of QR G and also very large values of QR G. At small QR G the relaxation time is proportional to the translational diffusion coefficient D of the entire polymer, while at large QR G the relaxation time is proportional to the sum of D and an effective segment diffusion coefficient kt/ f.
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