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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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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%. |
format | Online Article Text |
id | pubmed-5459021 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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