title: Study of colloidal particle Brownian aggregation by low-coherence fiber optic dynamic light scattering.
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.
authors.affiliation: School of Physics and Electronics, Central South University, Changsha 410083, China. xhui73@csu.edu.cn
authors.forename: Hui
authors.initials: H
authors.lastname: Xia
authors.forename: Ru Yi
authors.initials: RY
authors.lastname: Pang
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.forename: Cai Xia
authors.initials: CX
authors.lastname: Miao
authors.forename: Xiao Yun
authors.initials: XY
authors.lastname: Wu
authors.forename: Xue Shun
authors.initials: XS
authors.lastname: Hou
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhong
mesh_terms: D003102:Colloids / Q000737:chemistry*; D007700:Kinetics; D008027:Light; D010316:Particle Size; D011137:Polystyrenes / Q000737:chemistry*; D012542:Scattering, Radiation; D013535:Suspensions
chemical_list: D003102:Colloids; D011137:Polystyrenes; D013535:Suspensions; C024075:styrofoam