Investigation of the structure and morphology of modified materials based on polyvinyl chloride

Abstract

The use of polyvinyl chloride in practice is associated with many difficulties due to the hydrophobic nature of the polymer surface. This can lead to great adverse consequences when used in technological processes of the chemical industry and hydrometallurgy. Due to its high hydrophobicity and low surface free energy, PVC has a low degree of wettability with water, resulting in low ion sorption capacity, as well as undesirable protein absorption and bacterial adhesion. The aim of the work was to increase the hydrophilicity of the surface of industrially produced powdered PVC by modifying it with various organic amines and, as a result, hydrophilic ion-exchange materials of various structures and morphology will be obtained on its basis. The course of the reactions was studied by potentiometric titration, IR spectroscopy, and diffractionometry. The correlation between the morphology and chemical properties of the products obtained in the studied reactions and the formation of new covalent bonds in the structure of the polymer matrix was investigated using IR spectroscopy and diffractionometry. The influence of the nature of the modifying reagent, solvent and temperature on the modification process has been established.