Dynamical signatures of the vulcanization transition

Abstract

Dynamical properties of vulcanized polymer networks are addressed via a Rouse-type model that incorporates the effect of permanent random crosslinks. The incoherent intermediate scattering function is computed in the sol and gel phases, and at the vulcanization transition between them. At any nonzero crosslink density within the sol phase Kohlrausch relaxation is found. The critical point is signalled by divergence of the longest time-scale, and at this point the scattering function decays algebraically, whereas within the gel phase it acquires a time-persistent part identified with the gel fraction.

4 pages

References in corpus (2)

• Randomly Crosslinked Macromolecular Systems: Vulcanisation Transition to and Properties of the Amorphous Solid State
• Statistical mechanics of macromolecular networks without replicas

Cited by in corpus (9)

• Colloidal Gels: Equilibrium and Non-Equilibrium Routes
• Stress Relaxation of Near-Critical Gels
• Critical Dynamics of Gelation
• Emergence of complex behavior in gelling systems starting from simple behavior of single clusters
• Critical behaviour of the Rouse model for gelling polymers
• Normal stresses at the gelation transition
• Onset of entanglement
• Dynamics of gelling liquids: a short survey
• Rheology of gelling polymers in the Zimm model