Malaysian Journal of Analytical Sciences Vol 25 No 6 (2021): 1007 - 1019

 

 

 

 

OPTIMIZATION OF DIFFERENT PARAMETERS IN THE SYNTHESIS OF BISPHENOL A IMPRINTED POLYMER VIA PRECIPITATION POLYMERIZATION FOR BISPHENOL A ADSORPTION

 

(Pengoptimuman Parameter yang Berbeza dalam Sintesis Polimer Tercetak Bisfenol A Melalui Pempolimeran Pemendakan bagi Penjerapan Bisfenol A)

 

Tan Nee Nee, Noorhidayah Ishak*, Azalina Mohamed Nasir, Nur Zatul ‘Iffah Zakaria, Nor Munirah Rohaizad

 

Faculty of Chemical Engineering Technology,

Universiti Malaysia Perlis, Sungai Chuchuh, 02100 Padang Besar, Perlis, Malaysia

 

*Corresponding author:  noorhidayah@unimap.edu.my

 

 

Received: 27 September 2021; Accepted: 12 November 2021; Published:  27 December 2021

 

 

Abstract

Molecularly imprinted polymer (MIP) is used to synthesize receptors and is highly recognized against target molecules. The purpose of the study is to prepare bisphenol A (BPA) imprinted polymer that can be used to adsorb BPA molecules. The MIP was prepared by precipitation polymerization using BPA as a template, methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinker, acetonitrile as a solvent, and 1,1'-azobis(cyclohexanecarbonitrile) (AIBN) as an initiator by heating in an oil bath at 60 °C for 20 hours. The influence of several parameters (i.e., the ratio of monomer-template, the amount of crosslinker, and the amount of solvent) on the recognition capability of BPA MIP was investigated using response surface methodology (RSM). The optimal conditions of BPA synthesis are 3 mmol of monomer, 30 mmol of crosslinker, and 35 mL of solvent, which achieved an adsorption capacity of 78.111 mg/g. The MIP and non-imprinted polymer (NIP) were characterized using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The MIP shows higher selectivity towards BPA compared to other analogs. In conclusion, the particles of imprinted polymer have a great potential in the adsorption of BPA.

 

Keywords:  bisphenol imprinted polymer, response surface methodology, imprinted polymer characterization

 

Abstrak

Polimer molekul tercetak (MIP) digunakan untuk mensintesis reseptor dan mempunyai pengecaman yang sangat tinggi terhadap molekul sasaran. Tujuan kajian ini adalah untuk menyediakan polimer yang dicetak bisfenol A (BPA) yang boleh digunakan untuk menentukan keupayaan penjerapan terhadap molekul BPA. MIP disediakan dengan pempolimeran pemendakan menggunakan BPA sebagai templat, asid metakrilik (MAA) sebagai monomer berfungsi, etilena glikol dimetakrilat (EGDMA) sebagai agen penyilangan, asetonitril sebagai pelarut, dan 1,1 azobis (sikloheksanakarbonitril) (AIBN) sebagai pemula. Pempolimeran pemendakan dilakukan dengan pemanasan dalam rendaman minyak pada 60 °C selama 20 jam. Pengaruh parameter berikut telah disiasat (nisbah monomer-templat, jumlah agen penyilangan, dan jumlah pelarut yang digunakan). Kaedah matematik iaitu kaedah tindak balas permukaan (RSM) mengoptimumkan parameter ini untuk meningkatkan keupayaan pengesanan BPA MIP. Hasil yang diperoleh daripada RSM menunjukkan keadaan optimum 3 mmol jumlah monomer, 30 mmol jumlah agen penyilangan, dan 35 mL jumlah pelarut yang digunakan dengan kapasiti penjerapan sebanyak 78.111 mg/g. MIP juga mempunyai pemilihan yang lebih tinggi terhadap BPA berbanding dengan analog lain. Kesimpulannya, zarah polimer tercetak menunjukkan potensi yang baik terhadap penjerapan cecair BPA.

 

Kata kunci:  polimer bisfenol tercetak, kaedah tindak balas permukaan, pencirian polimer tercetak

 

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