ИСТИНА

This work proposes an original method for obtaining these filled microplastic particles. Crazing was used to introduce additives, which could potentially be pollutants, into the polymer. This process involves the uniaxial stretching of the original polymer film in a liquid medium that contains the required additive dissolved in it. During stretching, zones of plastic deformation with a nanoscale fibrillar porous structure, known as crazes, form in the polymer and become filled with the surrounding solution. As the tensile strain increases, the proportion of the polymer material that transforms into crazes and volumetric porosity increase. The non volatile additive remains in a highly disper sed form in the polymer volume after the liquid medium has been removed. Then the resulting films with filler can be crushed using mechanical processing, and thereby obtain model microplastic particles based on the desired polymer and containing the required additives, including water soluble ones. The report shows the morphological characteristics of polylactide microplastic particles, as well as the kinetics of the release of additives, including copper nitrate, brilliant green dye, and surfactant sodium dodecylbenzene sulfonate, into the aquatic environment.