Dynamics of Diblock Copolymers in Dilute Solutions
Abstract
We consider the dynamics of freely translating and rotating diblock (A-B), Gaussian copolymers, in dilute solutions. Using the multiple scattering technique, we have computed the diffusion and the friction coefficients DAB and ZetaAB, and the change EtaAB in the viscosity of the solution as functions of x = NA/N and t = lB/lA, where NA, N are the number of segments of the A block and of the whole copolymer, respectively, and lA, lB are the Kuhn lengths of the A and B blocks. Specific regimes that maximize the efficiency of separation of copolymers with distinct "t" values, have been identified.
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