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  • Title: Study of colloidal particle Brownian aggregation by low-coherence fiber optic dynamic light scattering.
    Author: Xia H, Pang RY, Zhang R, Miao CX, Wu XY, Hou XS, Zhong C.
    Journal: J Colloid Interface Sci; 2012 Jun 15; 376(1):322-6. PubMed ID: 22446146.
    Abstract:
    The aggregation kinetics of particles in dense polystyrene latex suspensions is studied by low-coherence fiber optic dynamic light scattering. Low-coherence fiber optic dynamic light scattering is used to measure the hydrodynamic radius of the aggregates. The aggregation kinetics data obtained can be fitted into a single exponential function, which is the characteristic of slow aggregation. It is found that the aggregation rate of particles increased with higher electrolyte levels and with larger particle concentrations. The experimental results can be explained by use of the Derjaruin-Landau-Verwey-Overbeer (DLVO) theory.
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