Aggregation of glass spheres (75±5 μm diameter) having different - medium and high - hydrophobicities was investigated at liquid air interfaces (water-air, aqueous surfactant solution air and aqueous glycerol solution air) from morphological and kinetic point of view. The physical parameters of aggregation were calculated by computerized image analysis. The cluster structures were characterized by the fractal dimension calculated from the scaling law between radius of gyration and surface coverage of aggregates (growth function). The primary growth in every investigated case was accompanied by restructuring which makes the clusters denser and more compact. The kinetic order of aggregation was analyzed in terms of determining the number of clusters as a function of aggregation time. In the early stage of the aggregation the kinetics was second order in every investigated case but beyond a given time (and cluster size) the kinetics changed in the most cases.
|Number of pages||9|
|Journal||Periodica Mathematica Hungarica|
|Publication status||Published - Dec 1 1998|
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