Abstract: In this paper, the results of the DTA-TGA, SEM-EDS, and FTIR analysis of the corn silk are presented. The DTA-TGA analysis shows that the decomposition of corn silk has several stages which are manifested with corresponding peaks on obtained DTA-TGA curves. SEM-EDS analysis was performed before and after the adsorption of copper ions. It has shown that untreated corn silk has a non-uniform structure, consisting of channels and cavities of irregular orientation, which facilitates the penetration of the water phase into the adsorbent structure, and incorporation of copper ions in the internal active sites. After the adsorption of Cu2+ ions, the structure becomes more compact, and uniform, as a result of the incorporation of copper ions into the molecular structure of the corn silk. FTIR analysis shows that ion exchange is not the dominant mechanism of binding copper ions to the active sites in the molecular structure of the corn silk, but also chemisorption and physical adsorption is present. https://unilib.phaidrabg.rs/o:5964 cobiss:138191113 ISSN: 2535-003X Gorgievski, Milan Božić, Dragana Marković, Miljan Štrbac, Nada Grekulović, Vesna Božinović, Kristina Zdravković, Milica 2023 Key words: corn silk, characterization, DTA-TGA, SEM-EDS, FTIR, copper ions,. info:eu-repo/semantics/article eng International Scientific Congress Machines, Technologies, Materials volume: 1 number: 25 startpage: 36 endpage: 38 application/pdf 1197999 bytes All rights reserved Physico-chemical characterization of the corn silk by DTA-TGA, SEM-EDS and FTIR analysis