ИСТИНА

Graphite oxide (GO) is a layered material obtained by the oxidation of graphite in an acidic environment. There are two main ways to obtain graphite oxide - Hammers and Brodie’smethods. The materials obtained by these methods (HGO and BGO)differ indegree of oxidation, the composition of the oxygen-containing groups as well as ability to swell in polar liquids -HGO swells more easily compared to BGO. The membranes are based on GO are capable of retaining gases and sorbing, separating, and purifying many polar solvents. In the systems “BGO – polar liquid” for acetonitrile, DMFA, and alcohols the reversible phase transformations were observed with the release of part of the sorbed liquid and decrease of the inter-plane distance. The aim of the present work was to establish the dependence of the phase transformations on the oxidation level of the material.