The colloid-chemical properties of water-soluble and poorly soluble poly(ethylene oxide) and poly(propylene oxide) block copolymers (pluronics), as well as the rheological properties of interfacial adsorption layers (IALs) formed by them and the polymer generated during polymerization initiation on the particle surface, were studied. The temperature, surfactant concentration, and polymer effects on the effective elastic modulus, determined during the lateral deformation of IALs, were evaluated. The strongest interfacial layers are formed by the poorly water-soluble pluronic, which contains a hydrophilic polyoxyethylene block surrounded by two hydrophobic polyoxypropylene blocks. The high strength of the interfacial adsorption layer on the particle surface affords polymer suspensions with high (up to 33

The colloidal-chemical properties of oxyethylated polypropylene glycols (pluronics), soluble and slightly soluble in water and containing a hydrophobic polypropylene glycol block with the same length but with different degrees of oxyethylation, were analyzed. It was determined that both pluronics are characterized by high surfactant properties, making it possible to use them as surfactants in heterophase polymerization processes. The observed differences in the kinetic specific features of the polymerization of styrene and methyl methacrylate (average particle diameter and polymerization rate, the character of the monomer conversion—time curves) allowed us to infer that the formation of the polymer-monomer particles occurs by different mechanisms. The obtained results showed that these surfactants are promising for the synthesis of polymer suspensions with a narrow particle size distribution and an average diameter in the range from 0.09 to 1.7 µm.

This article presents the results of investigations on heterophase polymerization of vinyl monomers in the presence of organosilicon compounds of different structures. On the basis of the detailed study of the kinetic and topochemical regularities of the heterophase polymerization of vinyl monomers, the conditions for the synthesis of polymer suspensions with a narrow particle-size distribution using a one-step method have been determined.

The paper shows the similarity of kinetic regularities of vinyl monomers polymerization in the presence of Laprol 6003, regardless of the degree of solubility of the monomers in water. It is assumed that this feature of polymerization is due to the same mechanism of formation of polymer-monomer particles (PMP) – from monomer microdroplets. The interfacial adsorption layer of PMPs, the main site of polymerization, is formed from a surfactant adsorbed from the bulk of the monomer phase and a polymer formed in the adsorption layer upon initiation of polymerization. The formation of complex structures in the interfacial adsorption layer of particles, the incompatibility of the surfactant and the resulting polymer, and high viscosity cause the formation of a strong interfacial layer that ensures the stability of polymer suspensions from the early stages of polymerization.

The colloidal chemical properties of triple block copolymers of polypropylene oxide and polyethylene oxide (pluronics of various structures) were studied in comparison. All of them are shown to be surfactants but differ in interfacial tension, surface activity, surface area occupied in the adsorption layer, and adsorption layer thickness. The kinetic regularities of polymerization of styrene and methyl methacrylate were studied. The particle diameters and their size distribution were determined. Distinctions in the kinetic regularities of polymerization are shown: the shape of the conversion—time curves (for the duration of the initial and stationary stages of polymerization) and the dependences of the diameter on the surfactant concentration and monomer to water volume ratio. In the presence of the water-insoluble pluronics, the mechanism of formation of polymer—monomer particles and interfacial layer on the surface differs from that when using water-soluble surfactants, which makes it possible to distinguish these processes into an independent type of heterophase polymerization.

This paper presents data on styrene polymerization in emulsions stabilized by biodegradable poorly water-soluble polyester polyol of 2,2-bis(methylol)propionic acid (polyester Boltorn H40). The effect of synthesis conditions on the kinetic laws of polymerization is studied. The results are analyzed in comparison with those previously obtained under similar conditions but in the presence of water-soluble surfactants.

The paper considered getting fast drying bitumen emulsion and study its main operating parameters of the film drying rate and durability of the emulsion. The optimum ratio of the components of the emulsion "binder" - "solvent" - "water".

The current paper describes optimization of the formulations of asphalt concrete roadway protective impregnation compositions based on BND 60/90 bitumen modified with petroleum resin. Physicochemical, technological and operating parameters of the prepared samples of the compositions are investigated.