<p>High energy radiation-induced copolymer adsorbent was synthesized by irradiating a mixture of GMA (glycidyl methacrylate), TMPTMA (trimethylolpropane trimethacrylate), and DMF (dimethylformamide). The copolymer was chemically modified to convert the epoxy groups of GMA into amine groups, which are essential for metal ion chelation from aqueous solutions. The impact of experimental parameters, like irradiation dose and solvent composition, on copolymer formation was examined. The amine-modified copolymer was extensively characterized using FTIR, Raman spectroscopy, BET surface area analysis, TGA and solid-state NMR analysis. Its effectiveness as an adsorbent for the removal of heavy metal ions, particularly Pb²⁺, was evaluated. The copolymer demonstrated exceptional adsorption capacity and strong selectivity for Pb²⁺ ions, whereas minimum selectivity was observed for Co²⁺, Cd²⁺, and Cr³⁺ ions from aqueous solutions. The adsorption mechanism and the interactions between Pb²⁺ ions and the copolymer different adsorption model were evaluated. The adsorption data best fit the Langmuir model, suggesting that Pb²⁺ ion adsorption occurs on a surface with a finite number of identical sites, forming a monolayer. The adsorption kinetics of Pb²⁺ ions were found to follow a pseudo-second-order model, indicating that the adsorption rate is proportional to the square of the number of available sites. The high porosity and the presence of accessible functional/chelation groups in the poly (GMA-co-TMPTMA) copolymer were identified as key factors contributing to its remarkable maximum adsorption capacity of 316.45&#xa0;mg/g. The study concludes that radiation-synthesized, amine-modified poly (GMA-co-TMPTMA) copolymers offer a promising and efficient alternative for treating metal ion-contaminated effluents in much sustainable manners.</p>