Viscoelasticity of Concentrated Isotropie Solutions of Semifiexible Polymers. 3. Nonlinear Rheology

David C. Morse

doi:10.1021/ma970475j

Viscoelasticity of Concentrated Isotropie Solutions of Semifiexible Polymers. 3. Nonlinear Rheology

David C. Morse

Chemical Engineering and Materials Science

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Abstract

Nonlinear Theological properties of a tightly-entangled solution of persistent macromolecules are calculated within the context of a tube model. It is shown that the curvature stress in highly deformed solutions of such chains is dominated by the contributions of deformation-induced "hairpins", i.e., rare but very tightly curved segments of the deformed chain conformations. The model is found to exhibit strain softening in shear deformations.

Original language	English (US)
Pages (from-to)	5934-5943
Number of pages	10
Journal	Macromolecules
Volume	32
Issue number	18
DOIs	https://doi.org/10.1021/ma970475j
State	Published - Sep 7 1999

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Viscoelasticity of Concentrated Isotropie Solutions of Semifiexible Polymers. 3. Nonlinear Rheology

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