Impact of Crosslinking Agent on Sorption Properties of Molecularly Imprinted Polymers in Relation to Silver
Agibayeva L. Melnikov Y. Kubiyeva D. Kondaurov R.
August 2025Multidisciplinary Digital Publishing Institute (MDPI)
Polymers
2025#17Issue 15
Molecularly imprinted polymers (MIPs) for silver sorption were synthesized using diethylene glycol dimethacrylate (DEGDMA) and divinylbenzene (DVB) as crosslinking agents. Synthesis was carried out using a ratio template: monomer: monomer: cross-linker = 1:2:2:8. The yield of obtained imprinting structures was 63.2% and 67.8% for MIP(DEGDMA) and MIP(DVB), respectively. The MIPs were analyzed by FTIR analysis, which showed the presence of characteristic peaks indicating the presence of monomers and crosslinkers in the MIP structure. According to the results of SEM analysis, the average cavity size for MIP(DEGDMA) is 0.81 ± 0.20 μm and for MIP(DVB) is 0.68 ± 0.23 μm in diameter. MIP(DEGDMA)’s sorption degree is 66.08%, and its sorption capacity is 3.31 g/g; MIP(DVB)’s sorption degree is 78.35%, and its sorption capacity is 3.92 g/g. The desorption degree is 69.85% for MIP(DEGDMA) and 69.52% for MIP(DVB). For analysis of sorption kinetics, the Radushkevich and Elovich kinetic models were applied.
crosslinker , molecular imprinting , silver , sorption , sorption capacity , sorption degree
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Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty, 050040, Kazakhstan
Biochemical Engineering Department, International Engineering and Technological University, Al-Farabi Ave. 93a, Almaty, 050060, Kazakhstan
Faculty of Chemistry and Chemical Technology
Biochemical Engineering Department
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