SYNTHESIS OF POLY( MMA-EGDMA) ON PVDF MEMBRANE AS MEMBRANE MOLECULAR IMPRINTED POLYMER (MMIP) FOR NAPROXEN ADSORPTION

• Main Author: Nursafitri, Laura
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/86747
• Institution: Institut Teknologi Bandung

Naproxen (NPX) is a non-steroidal anti-inflammatory drug (NSAID) that can pollute the environment and cause health problems in high amounts. This study aims to adsorb NPX using poly(MMA-EGDMA) coated on PVDF membrane as molecularly imprinted polymer membrane (MMIP) and non-imprinted polymer membrane (MNIP) to adsorb NPX. MMIP and MNIP were characterized using FTIR, SEM, BET, and AFM. FTIR characterization showed that MNIP and MMIP were successfully prepared with a characteristic peak at 1716 cm-1 for the C=O bond of the formed polymer. The peaks of MMIP at 1635 cm-1, 1557 cm-1, and 1368 cm-1 are C=C, C=C aromatic, and -CH3 aromatic bond vibrations of NPX, respectively. SEM results showed that poly(MMA-EGDMA) successfully coated the surface and filled the pores of PVDF. AFM measurements showed that the surface roughness of PVDF was reduced after coating, which was inferred from the decrease in roughness value (Ra) from 14.49 nm for PVDF membrane to 1.464 nm and 1.067 nm for MMIP and MNIP. BET results proved that the PVDF surface area of 2122.875 m2/g was greater than MMIP and MNIP, which amounted to 631.447 m2/g and 581.550 m2/g, indicating the PVDF pores had been filled by poly(MMA EGDMA). Optimum adsorption of NPX was achieved at a contact time of 35 min, pH 2, and an adsorbent mass of 50 mg in 10 mL NPX. The adsorption process of NPX followed the pseudo-second-order adsorption kinetics model and the Sips adsorption isotherm model with a maximum adsorption capacity of 3.42 mg/g. Thermodynamic studies showed that the adsorption process of NPX using MMIP proceeded spontaneously, with exothermic reactions and an increase in the irregularity of the system. The resulting MMIP has good selectivity for NPX compared to ibuprofen and dichlorophenac. The repeatability test showed that MMIP could be reused in NPX adsorption.