SYNTHESIS AND CHARACTERIZATION OF MOLECULAR IMPRINTED POLYMERS FOR BISPHENOL-A

• Main Author: Hans Charisma, Nicolas
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/75868
• Institution: Institut Teknologi Bandung

The use of plastic packaging as food and beverage packaging has been widely used by the community. The main constituent in several types of plastic is polycarbonate. One of the materials for making polycarbonate is bisphenol-A (BPA). BPA can enter the human body because it can migrate into packaged food/drinks. BPA is harmful to the body because its ability to interact with estrogen hormone receptors due to its similar chemical structure. BPA can cause various health hazards such as endocrine disorders, infertility, early puberty, and breast cancer. One method that can be used to test BPA levels in packaging is UV-Vis spectrophotometry. This method has a drawback when the level of BPA in water is quite low, so that the UV-Vis spectrum becomes less accurate. This research was conducted to optimize the reading of BPA levels on a UV-Vis spectrophotometer using molecularly imprinted polymer (MIP). MIP will separate BPA from other components, resulting in a more optimal reading of the BPA absorbance spectrum. The research produced molecularly non-imprinted polymer (NIP) and MIP products based on methacrylic acid and 4-vinylpyridine as monomers, ethylene glycol dimethacrylate as crosslinkers, acetonitrile as solvent, benzoyl peroxide as initiator and molds in the form of BPA. The composition of BPA and monomer used was 1,4 mmol, crosslinkers were 5,6 mmol and 11,2 mmol, solvent was 40 mL, and BPO was 40 mg. Based on the results of the study, the ratio of monomer composition to crosslinking did not affect the characterization of the resulting NIP and MIP, but did affect the amount of yield produced in one synthesis. Then for the influence of variations in the type of monomer causes differences in FTIR characterization and affects the size of the particles formed. The adsorption capacity obtained at a BPA concentration of 10 ppm and a contact time of 120 minutes for NIP methacrylic acid (MAA) (1:4), NIP 4-vinylpyridine (4-Vp) (1:4), MIP MAA, MIP 4-Vp, and NIP 4-Vp (1:8) respectively of 12.97 mg, 12,57 mg, 17,05 mg, 1,93 mg, 15,7 mg. The best adsorption capacity is MIP using MAA monomer. This is supported based on SEM imagery, the particles are small and uniform so they can adsorb BPA well.