A porous fabric-based molecularly imprinted polymer for specific recognition of tetracycline by radiation-induced RAFT-mediated graft copolymerization. (October 2022)

• Record Type: Journal Article
• Authors: Söylemez, Meshude Akbulut; Can, Hatice Kaplan; Bağda, Esra; Barsbay, Murat
• Is Part Of: Radiation physics and chemistry. Volume 199(2022)
• Publication Date: 2022-10
• Subjects: Molecularly imprinting polymer (MIP) -- RAFT-Mediated graft copolymerization -- Radiation-induced grafting -- Tetracycline removal; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2022.110314
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: Despite technical and methodological advances, the selective separation of antibiotics from aqueous media remains a challenge. In this work, a novel molecularly imprinting polymer (MIP) with specific recognition sites was constructed by radiation-induced RAFT-mediated graft copolymerization of methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) from PE/PP nonwoven fabric for tetracycline hydrochloride (TC) removal. Binding isotherm and kinetics were found to follow Freundlich and pseudo-second-order model, respectively. The as-synthesized molecularly-imprinted fabric exhibited excellent binding performance towards TC, with the maximum adsorption capacity and imprinting factor of 46.7 mg g −1 and 3.6, respectively. Moreover, it removed approximately 95% of TC from the aqueous media, also performed well in real environmental samples. For comparison purposes, MIPs obtained with conventional grafting performed significantly lower than those attained by RAFT-mediated grafting. After ten consecutive adsorption and desorption cycles, the fabric-based molecularly-imprinted material retained excellent stability and reusability with a performance loss of only 3.6%, which could facilitate its potential application on an industrial scale. Highlights: MIPs of tetracycline were prepared by radiation-induced RAFT polymerization. Conventional and RAFT-mediated methods were compared. A significantly better binding performance was achieved by RAFT method. An adsorption capacity of 46.7 mg g −1 was obtained. An imprinting factor of 4.32 was achieved.