Experimental study of the process of inner treatment of porous polylactide in a pulsed DBD

Abstract

Plasma treatment of porous polymeric materials is a promising method for creating new materials that can be used for different tasks, including in medicine, for the development of new types of biocompatible and biodegradable polymeric materials. This paper is devoted to the study of plasma treatment of porous polylactide to clarify discharge conditions and improve the effectiveness of the treatment process. Experiments were conducted to determine conditions for the ignition of a discharge and its electrical parameters in samples of porous polylactide at different air pressures. An experimental study of the degree of processing (hydrophilization) of the cavities of polylactide samples was carried out depending on processing time, gas pressure, and the corresponding input energy of the discharge. An infrared spectroscopic study of the treated and untreated samples was conducted, and the impact of treatment on the functional groups on the polymer surface is shown. The effect of electret properties of polylactide on the discharge ignition in its cavities is demonstrated.