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- Title
Synthesis of Particle Size Standards Based on Aqueous Suspensions of Polystyrene Latex Spheres.
- Authors
Averkin, D. V.
- Abstract
A comprehensive research has been carried out to develop a method for obtaining particle size standards based on aqueous suspensions of polystyrene latex spheres. For the synthesis of suspensions, a method of seeded emulsion polymerization of styrene under excess amount of dispersion medium is proposed. The equipment from the State Primary Standard of Units of Dispersed Parameters of Aerosols, Suspensions and Powder Materials (GET 163-2020) was used in the work. The particle size distribution of the suspension samples synthesized during the study was analyzed by the methods of dynamic light scattering and laser diffraction. The metrological characteristics of synthesized suspensions have been studied. It was established that depending on the methods of emulsion polymerization and micro-emulsification of styrene, monodisperse microspheres of polystyrene latex of various diameters can be obtained. The effect of the amount of introduced surfactant on the process of quasi-spontaneous micro-emulsification of the monomer during seeded polymerization was studied. Based on the study results, aqueous suspensions of monodisperse polystyrene latex spheres with a median particle diameter of 0.31 and 0.54 μm were proposed as particle size standards. The study results can be used to obtain monodisperse particles larger than 1 μm by seeded polymerization.
- Subjects
LATEX; EMULSION polymerization; POLYSTYRENE; PARTICLE size distribution; MONODISPERSE colloids; SPHERES; DIFFRACTIVE scattering
- Publication
Measurement Techniques, 2023, Vol 65, Issue 12, p936
- ISSN
0543-1972
- Publication type
Article
- DOI
10.1007/s11018-023-02173-1