Hybrid Biopolymer Nanocomposite Materials for Ecological and Biomedical Applications

This article developed and studied new hybrid biopolymer nanocomposites based on polylactide and humic substances. It has been established those humic substances, which were obtained from brown coals by four different extraction methods, are characterized by nanodispersion in the range of 52 - 380 nm. It was found that the presence of these functional groups determines the ability of humic substances to act as a hybrid modifier of polylactide: conformational changes in its secondary structure and dipole-dipole interaction in the form of a hydrogen bond. Due to the increase in the degree of crystallization and the emergence of intermolecular and ester bonds in the formation of a more rigid network structure in the polylactide-humic substances system, there is an increase in mechanical properties of hybrid biopolymer nanocomposite materials. Also, based the obtained hybrid biopolymer nanocomposite materials based on polylactide and nano disperse humic substances can be used to produce membrane-covering materials for wounds, implants, medical devices and products for dermatological treatment.