Features of synthesis of polyacrylate nanospheres "core-shell" in the presence of polymer surfactant Pluronic P123
Abstract
Emulsion polymerization in the presence of the polymer surfactant Pluronic P123 as an emulsifier synthesized polyacrylate nanospheres "core-shell" in the form of an aqueous dispersion. The polymer of the core is polybutylmethacrylate or polybutylacrylate, the polymer of the shell is a mesh poly-N,N-dimethylaminoethylmethacrylate. The nanoscale, spherical shape, and structure of polymer particles are confirmed by dynamic light scattering and transmission electron microscopy.
Core-shell polyacrylate nanospheres are aggregatively stable due to the non-electrostatic structural and mechanical factor provided by the nonionic polymer surfactant Pluronic P123 adsorbed on the particle surface. A small value of the electrokinetic potential of the particles is caused by the polarity of the core monomer.
The monodisperse state of the "core-shell" particles in the synthesized dispersions, proved by dynamic light scattering, suggests that the polymerization process occurs in Pluronic P123 micelles. The established adsorption capacity of the shell monomer N,N-dimethylaminoethylmethacrylate, in the absence of its micelle-forming ability, confirms the formation of core-shell particles during polymerization.
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