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Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption

Poly(acrylamide co-acrylic acid) hydrogels were prepared by free-radical copolymerization of acrylamide and acrylic acid in aqueous solutions using electron beam irradiation in the dose range of 2.5 kGy to 6 kGy in atmospheric conditions and at room temperature. The influence of the absorbed dose, t...

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Autores principales: Manaila, Elena, Craciun, Gabriela, Ighigeanu, Daniel, Cimpeanu, Catalina, Barna, Catalina, Fugaru, Viorel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459021/
https://www.ncbi.nlm.nih.gov/pubmed/28772904
http://dx.doi.org/10.3390/ma10050540
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author Manaila, Elena
Craciun, Gabriela
Ighigeanu, Daniel
Cimpeanu, Catalina
Barna, Catalina
Fugaru, Viorel
author_facet Manaila, Elena
Craciun, Gabriela
Ighigeanu, Daniel
Cimpeanu, Catalina
Barna, Catalina
Fugaru, Viorel
author_sort Manaila, Elena
collection PubMed
description Poly(acrylamide co-acrylic acid) hydrogels were prepared by free-radical copolymerization of acrylamide and acrylic acid in aqueous solutions using electron beam irradiation in the dose range of 2.5 kGy to 6 kGy in atmospheric conditions and at room temperature. The influence of the absorbed dose, the amount of cross-linker (trimethylolpropane trimethacrylate) and initiator (potassium persulfate) on the swelling properties and the diffusion coefficient and network parameters of hydrogels were investigated. The structure and morphology of hydrogels were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The use of the obtained hydrogels by the removal of Cu(2+) and Cr(6+) from aqueous solutions was investigated at room temperature. During the adsorption of metal ions on hydrogels, the residual metal ion concentration in the solution was measured by an atomic absorption spectrophotometer (AAS). It has been established that the use of a relatively small amount of trimethylolpropane trimethacrylate for hydrogel preparation has led to the increasing of swelling up to 8500%.
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spelling pubmed-54590212017-07-28 Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption Manaila, Elena Craciun, Gabriela Ighigeanu, Daniel Cimpeanu, Catalina Barna, Catalina Fugaru, Viorel Materials (Basel) Article Poly(acrylamide co-acrylic acid) hydrogels were prepared by free-radical copolymerization of acrylamide and acrylic acid in aqueous solutions using electron beam irradiation in the dose range of 2.5 kGy to 6 kGy in atmospheric conditions and at room temperature. The influence of the absorbed dose, the amount of cross-linker (trimethylolpropane trimethacrylate) and initiator (potassium persulfate) on the swelling properties and the diffusion coefficient and network parameters of hydrogels were investigated. The structure and morphology of hydrogels were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The use of the obtained hydrogels by the removal of Cu(2+) and Cr(6+) from aqueous solutions was investigated at room temperature. During the adsorption of metal ions on hydrogels, the residual metal ion concentration in the solution was measured by an atomic absorption spectrophotometer (AAS). It has been established that the use of a relatively small amount of trimethylolpropane trimethacrylate for hydrogel preparation has led to the increasing of swelling up to 8500%. MDPI 2017-05-18 /pmc/articles/PMC5459021/ /pubmed/28772904 http://dx.doi.org/10.3390/ma10050540 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Manaila, Elena
Craciun, Gabriela
Ighigeanu, Daniel
Cimpeanu, Catalina
Barna, Catalina
Fugaru, Viorel
Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption
title Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption
title_full Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption
title_fullStr Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption
title_full_unstemmed Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption
title_short Hydrogels Synthesized by Electron Beam Irradiation for Heavy Metal Adsorption
title_sort hydrogels synthesized by electron beam irradiation for heavy metal adsorption
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459021/
https://www.ncbi.nlm.nih.gov/pubmed/28772904
http://dx.doi.org/10.3390/ma10050540
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