Thermoreversible Gelation in Solutions of Associating Polymers. 2. Linear Dynamics

1998/01/27 by Michael Rubinstein, Alexander N. Semenov, A. N. Semenov · 476 citations
Chemistry · Materials Science · Physics and Astronomy · #Activation energy #Chemical physics #Chemistry #Dissociation (chemistry) #Force Microscopy Techniques and Applications #Material Dynamics and Properties #Moduli #Organic chemistry #Physical chemistry #Physics #Polymer #Quantum mechanics #Statistical physics #Surfactants and Colloidal Systems #Thermodynamics #Viscoelasticity #Viscosity

paper · doi:10.1021/ma970617+

published in Macromolecules 31(4), 1386-1397 (American Chemical Society)

openalex publication_date 1998/01/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/25

Abstract

Viscoelastic properties of reversible networks formed in solutions of associating polymers are considered theoretically in the Rouse−Zimm (unentangled) regime. It is shown that the dynamics is governed primarily by the network strand size and by the effective lifetime of reversible junctions. Both frequency and concentration dependencies of viscosity and dynamical moduli are considered. A novel model taking into account the possibility of multiple dissociation and recombination of the same pair of stickers is developed. It is shown that this effect gives rise to an increase of the apparent activation energy which is predicted to be substantially larger than the priming activation energy for dissociation of two stickers.

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