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Mesoscopic structure formation in colloidal aggregation and gelation

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Original languageEnglish
Pages (from-to)71-126
Number of pages56
JournalAdvances in Colloid and Interface Science
Volume73
Publication statusPublished - 1 Oct 1997

Abstract

Recent small-angle light scattering experiments have revealed that diffusively aggregating spherical particles develop structure on a mesoscopic length scale (similar to tens of particles). The mesoscopic structural length scale persists even when the aggregation proceeds to the formation of a space-spanning network (a gel). We review the technique of small-angle light scattering, survey the experimental evidence for mesoscopic structure formation, discuss attempts at understanding these experimental observations by computer simulation of irreversible and reversible diffusion-limited cluster aggregation (DLCA), and propose a coherent picture for the understanding of non-equilibrium aggregation in the context of phase transitions.

    Research areas

  • CLUSTER-CLUSTER AGGREGATION, DIFFUSION-LIMITED AGGREGATION, CRYSTAL PHASE-TRANSITIONS, LONG-RANGE CORRELATIONS, SPINODAL DECOMPOSITION, FRACTAL AGGREGATION, 2 DIMENSIONS, POLYSTYRENE LATEX, POLYMER MIXTURES, ADHESIVE SPHERES

ID: 1492349