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Slow dynamics and aging in colloidal gels studied by x-ray photon correlation spectroscopy

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Original languageEnglish
Article number010401
Pages (from-to)-
Number of pages4
JournalPhysical Review E - Statistical, Nonlinear and Soft Matter Physics
Volume76
Issue number1
DOIs
StatePublished - Jul 2007

Abstract

Slow, nonequilibrium dynamics during delayed sedimentation in a colloidal depletion gel was studied by x-ray photon correlation spectroscopy. The intermediate scattering functions change during the process from stretched to compressed exponential decays, indicating a jamming transition toward full aging. A complex aging behavior follows this process; it is proposed that large-scale network deformations trigger an unjamming, leading to the final collapse of the gel.

    Research areas

  • POLYMER MIXTURES, LIGHT-SCATTERING, TRANSIENT GELS, GELATION, SYSTEM

ID: 1413975