Synthesis of Molecularly Imprinted Polymers for the Extraction of p-Hydroxybenzoic Acid
p-Hydroxybenzoic acid (p-HBA) is widely found in the environment due of its exceptional properties and has been used in the synthesis of variety of products such as preservatives, dyes, bactericides, etc. This causes a huge disposal of p-HBA in the environment which is considered to be harmful to b...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Asian Journal of Chemistry
2025
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/48654/1/024-33574%2B%281736-1742%29%2B2025.pdf http://ir.unimas.my/id/eprint/48654/ https://asianpubs.org/index.php/ajchem/article/view/37_7_24 https://doi.org/10.14233/ajchem.2025.33574 |
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| Summary: | p-Hydroxybenzoic acid (p-HBA) is widely found in the environment due of its exceptional properties and has been used in the synthesis of variety of products such as preservatives, dyes, bactericides, etc. This causes a huge disposal of p-HBA in the environment which is
considered to be harmful to both aquatic and terrestrial life. The molecular imprinting technique was employed to fabricate a molecularly imprinted polymer (MIP) that possesses selective binding sites for the p-HBA. In this study, p-HBA was used as the template molecule for
the MIP synthesis, which was carried out using the precipitation polymerization method with a non-covalent approach. Acrylic acid was employed as the functional monomer, while ethylene glycol dimethylacrylate (EGDMA) was utilized as the cross-linker. The characterization
of the MIP of p-HBA was conducted with scanning electron microscopy (SEM) and Fourier transform infrared (FTIR). The SEM results showed that both MIP and the non-imprinted polymer (NIP) of p-HBA were spherical in shape. The MIP attained its highest efficiency at optimum conditions of 1 ppm initial concentration, 0.4 g of polymer dosage and 210 min contact time. Moreover, the competitive binding
assay indicated that the MIP displayed a greater affinity towards p-HBA than benzoic acid. The synthesized MIP was successfully used for the extraction p-HBA from blood serum and the extraction efficiency was about 80.56%. |
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