The results of a study of the chemical composition and wettability of the surface of 3D scaffolds based on polylactide and polycaprolactone modified by flows of low-temperature nitrogen plasma glow discharge are presented. The elemental composition and chemical state of the surface were studied by X-ray photoelectron spectroscopy. The formation of nitrogen-containing bonds on the surfaces of 3D polymer scaffolds has been established. It is shown that a change in the chemical composition of the surface after plasma modification affects a decrease in the values of the wetting edge angles with a simultaneous increase in the free surface energy of polymer materials; therefore, the materials acquire a hydrophilic character. Thus, the 3D scaffolds obtained from polylactide and polycaprolactone, with a surface modified by nitrogen plasma, have potential for use in regenerative medicine due to their improved hydrophilicity and the presence of reactive nitrogen-containing functional groups on the surface.
Khomutova et al. (Mon,) studied this question.