Synthesis and characterization of novel hydrogels based on synthetic rubber: investigation of swelling behavior and heavy metal adsorption capacity
Makaleler > Tam Makale · 2026
Yazarlar: Berna Körpinar, Amine Tirek, Hakan AKAT
Separation Science and Technology, Uluslararası, Wos, 2026, cilt 61, ss 1812-1824
DOI: 10.1080/01496395.2026.2632745
Özet
In this study, styrene-butadiene rubber (SBR) and nitrile rubber (NBR) based hydrogels were synthesized by radical polymerization using ethylene glycol dimethacrylate (EGDMA) and 2,3-dimercaptopropanol crosslinkers. The hydrogel structure was değiştirfunctionalized by adding methacrylic acid (MA) and 2-hydroxyethyl methacrylate (HEMA) monomers in fixed ratios. The effects of crosslinker type and ratio on the swelling behavior, heavy metal adsorption capacity, and thermal properties of the hydrogels were systematically investigated.FTIR, XRD, SEM, and TGA analyses showed that the hydrogels were successfully synthesized and structurally stable. Swelling tests revealed that while the control hydrogels exhibited low swelling capacity (27.32% and 23.95%), Experiment 6 and Experiment 4 demonstrated superior performance with equilibrium swelling capacities of 98.22% and 93.17%, respectively. Heavy metal adsorption studies revealed that the hydrogels exhibited high selectivity, particularly toward As3+ ions; Experiments 6 and 4 achieved arsenic adsorption capacities of 9.91 mg/g and 9.97 mg/g, respectively. Thermogravimetric analyses showed that increasing the amount of crosslinking agents improved the thermal stability of the hydrogels.These results demonstrate that the developed hydrogels are strong candidates for environmental heavy metal removal applications.