MOLECULAR RECOGNITION OF DIBUTYL PHTHALATE IMPRINTED POLYMER USING METHACRYLIC ACID (MAA) AS FUNCTIONAL MONOMER via PRECIPITATION POLYMERIZATION; [Pengecaman Molekul Polimer Tercetak Dibutil Ftalat Menggunakan Asid Metakrilik (MAA) Sebagai Monomer Berfungsi Melalui Pempolimeran Pemendakan]

• 发表在: Malaysian Journal of Analytical Sciences
• 主要作者: 2-s2.0-85216227171
• 格式: 文件
• 语言: English
• 出版: Malaysian Society of Analytical Sciences 2024
• 在线阅读: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85216227171&partnerID=40&md5=c45d580f0de219f3620fac505c5111e6

The extensive utilization of phthalates raises concerns regarding their impact on human and animal well-being. Therefore, this study aimed to explore the potential formation of a molecularly imprinted polymer by examining its physical characteristics and adsorption capabilities through a binding analysis. This study synthesized the dibutyl phthalate-imprinted polymer (DBP-IP) by precipitation polymerization using dibutyl phthalate (DBP), methacrylic acid, and divinylbenzene-80 as the template, functional monomer and crosslinker, respectively. The polymers were characterized using Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy, and surface area and porosity analysis. The performance of the synthesized polymer was evaluated through a batch rebinding experiment. Therefore, the kinetic spectrophotometric method was used to describe the determination of the DBP molecule based on its adsorption effect onto the polymer. The effects of pH, concentration, and time taken were investigated to reveal the possible mechanism through the adsorption isotherm and kinetic study. The findings demonstrated that the DBP-IP has a good adsorption efficiency in acidic solutions with lower concentrations. The maximum percentage removal for DBP-IP and NIP reached 90% and 53%, respectively. Studies on adsorption showed that the DBP-IP followed the Langmuir isotherm model, whereas the NIP fit the Freundlich model. The kinetic study revealed that pseudo-second-order was the appropriate kinetic model for both DBP-IP and NIP. The imprinting factor of DBP-IP was determined by a selectivity study and showed a higher value of kd, which proved that DBP-IP was more selective toward DBP compared to NIP. © 2024, Malaysian Society of Analytical Sciences. All rights reserved.