Water Saturated with Pressurized CO₂ as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles.

ABSTRACT: Methods for creating various 3D morphologies of composites based on chitosan and copper nanoparticles stabilized by it in carbonic acid solutions formed under high pressure of saturating CO₂ were developed. This work includes a comprehensive analysis of the regularities of copper nanoparticles stabilization and reduction with chitosan, studied by IR and UV-vis spectroscopies, XPS, TEM and rheology. Chitosan can partially reduce Cu²⁺ ions in aqueous solutions to small-sized, spherical copper nanoparticles with a low degree of polydispersity; the process is accompanied by the formation of an elastic polymer hydrogel. The resulting composites demonstrate antimicrobial activity against both fungi and bacteria. Exposing the hydrogels to the mixture of He or H₂ g

SUBMITTER: Stamer KS 

PROVIDER: S-EPMC9658215 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature