908 * For correspondence. Oxidation Communications 44, No 4, 908–921 (2021) Ecologically friendly oxidation processes ECOLOGICALLY FRIENDLY POLYMER COMPOSITES ON THE BASE OF LEAFS O. MUKBANIANI a,b *, J. ANELI b , L. LONDARIDZE a , E. MARKARASHVILI a,b , T. TATRISHVILI a,b a Department of Macromolecular Chemistry, Ivane Javakhishvili’ Tbilisi State University, 1 “I. Chavchavadze” Blvd., 0179 Tbilisi, Georgia b Institute of Macromolecular Chemistry and Polymeric Materials, Ivane Javakhishvili Tbilisi State University, 13 “I. Chavchavadze” Blvd., 0179 Tbilisi, Georgia E-mail: omar.mukbaniani@tsu.ge ABSTRACT The work deals with the obtaining and research of new composite materials based on renewable plant raw materials-leafs (Platanus orientalis) and binders-styrene and triethoxy(vinylphenethyl)silane. These composite materials are characterised by better physical-mechanical properties and water absorption, than wood particle boards made on the basis of phenol-formaldehyde resins. The ecologically friendly new composite materials have been obtained under constant pressure and at different temperatures, the optimal conditions for making composite materials have been established. For the samples water absorption, bending strength, impact viscosity, thermogravimetric analysis, thermal stability (Vicat method), spectral (FTIR), optical microscopic and scanning electron microscopy and TGA investigations were examined. Keyword: leafs, binders, thermal properties, scanning electron microscopy, water absorption. AIMS AND BACKGROUND At the recent times, demand for light weight and high strength materials fabricated from natural fbres has increased tremendously. The use of natural fbres has rapidly increased due to their high availability, low density, and renewable capability over synthetic fbre. Natural leaf fbres in the plant offers high stiffness, less energy con- sumption, less health risk, environment friendly, and better insulation property than the synthetic fbre-based composite. Natural leaf fbre composites have low machining