Velocity field in nondraining polymer chains
Tóm tắt
The molecular-weight dependence of the intrinsic viscosity and the diffusion coefficient of polymers in dilute solutions can be obtained by assuming the polymer chains to be rigid spheres of radius equal to their radius of gyration. This observation has been interpreted as implying that the solvent within a polymer coil is dragged along with the coil, and that the coil with the occluded solvent acts like a hydrodynamic entity. In order to question this very common interpretation, we calculate the velocity field in nondraining polymer chains. Our explicit results are at odds with the simple picture of nondraining polymer coils acting like rigid spheres.
Tài liệu tham khảo
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