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Structure and rheology of polymers with arbitrary flexibility: A numerical approach

✍ Scribed by Wilfried Carl

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 190 KB
Volume: 36
Category: Article
ISSN: 0887-6266
DOI: 10.1002/(sici)1099-0488(199808)36:11<1995::aid-polb21>3.0.co;2-1

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✦ Synopsis

A numerical approach, based on the configurational distribution function of a polymer chain in flow, has been used to calculate the zero-shear rheological properties. Starting from a bead-spring representation of the chain, the stiffness is introduced by repulsive springs between next-nearest neighbors. The connection to models based on the bending equation and their limitation is discussed. To obtain a correct model of a semiflexible chain, an inhomogeneous spring constant has to be used. Calculations have been carried out for the free draining case, and a simple relation between the intrinsic viscosity, the translational diffusion coefficient and the persistence length for arbitrary solvent conditions is proposed.

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