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Qassim MI, Khalill MM, Hamed AA, Gizawy MA, Atta E, El-Hag Ali A. Synthesis and evaluation of a novel polycarbonate grafted poly (glycidyl methacrylate) resin for sorption of 131I. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Water-Soluble Starch-Based Copolymers Synthesized by Electron Beam Irradiation: Physicochemical and Functional Characterization. MATERIALS 2022; 15:ma15031061. [PMID: 35161009 PMCID: PMC8839537 DOI: 10.3390/ma15031061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 02/05/2023]
Abstract
Modification of natural polymers for applications in the treatment of waste and surface waters is a continuous concern of researchers and technologists in close relation to the advantages they provide as related to classical polymeric flocculants. In this work, copolymers of starch-graft-polyacrylamide (St-g-PAM) were synthesized by electron beam irradiation used as the free radical initiator by applying different irradiation doses and dose rates. St-g-PAM loaded with ex situ prepared silver nanoparticles was also synthesized by using an accelerated electron beam. The graft copolymers were characterized by chemical analysis, rheology, and differential scanning calorimetry (DSC). The results showed that the level of grafting (monomer conversion coefficient and residual monomer concentration), intrinsic viscosity and thermal behavior (thermodynamic parameters) were influenced by the irradiation dose, dose rate and presence of silver nanoparticles. The flocculation performances of the synthesized copolymers were also tested on water from the meat industry in experiments at the laboratory level. In the coagulation–flocculation process, the copolymer aqueous solutions showed good efficiency to improve different water quality indicators.
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Abd-Elmabood HM, Raafat AI, Soliman ESA, Ali AEH. Performance evaluation of microbial fuel cell using a radiation synthesized low density polyethylene-grafted-poly (glycidyl methacrylate-co-vinyl acetate) as a proton exchange membrane. ENVIRONMENTAL TECHNOLOGY 2022; 43:311-326. [PMID: 32571180 DOI: 10.1080/09593330.2020.1786168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
ABSTRACTThe present work focuses on the synthesis of a proton exchange membrane to be assembled in a microbial fuel cell (MFC) for simultaneous bioelectricity production and domestic wastewater treatment. The indigenous membrane was prepared by ionizing irradiation-induced graft copolymerization of glycidyl methacrylate (GMA) and vinyl acetate (VAc) onto low-density polyethylene and subsequently, the prepared grafted sheets were sulfonated via epoxy ring-opening of PGMA moieties. Parameters affecting the grafting degree were investigated and the prepared membranes were characterized by investigating their structural, thermal, mechanical, and electrical properties. Some physicochemical characteristics including ion exchange capacity, sulfonation density, and proton conductivity were also evaluated. The data confirmed the success of the preparation protocol to obtain a suitable membrane for the proposed application. Moreover, the performance of the assembled MFC was thoroughly investigated through the evaluation of its electrochemical behaviour including cyclic voltammetry, electrochemical impedance spectroscopy, columbic efficiency, and wastewater treatment capability. The sulfonated LDPE-g-P(GMA-co-VAc) membrane of 80% grafting degree shows substantial removal of chemical oxygen demand up to about 90% with columbic efficiency of 10.1%, columbic recovery of 8.7%, rate of energy harvest of 2.1 C/h and power density of 2.72 W m-2. However, the use of 10 mM of KMnO4 as electron acceptor drastically increase the harvested power density to reach 356.4 W m-2.
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Affiliation(s)
- Hanan M Abd-Elmabood
- Polymer Chemistry Dept. National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
| | - Amany I Raafat
- Polymer Chemistry Dept. National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
| | | | - Amr El-Hag Ali
- Polymer Chemistry Dept. National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
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Wang H, Wen Y, Peng H, Zheng C, Li Y, Wang S, Sun S, Xie X, Zhou X. Grafting Polytetrafluoroethylene Micropowder via in Situ Electron Beam Irradiation-Induced Polymerization. Polymers (Basel) 2018; 10:polym10050503. [PMID: 30966537 PMCID: PMC6415420 DOI: 10.3390/polym10050503] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 04/28/2018] [Accepted: 05/04/2018] [Indexed: 11/24/2022] Open
Abstract
Decreasing the surface energy of polyacrylate-based materials is important especially in embossed holography, but current solutions typically involve high-cost synthesis or encounter compatibility problems. Herein, we utilize the grafting of polytetrafluoroethylene (PTFE) micropowder with poly (methyl methacrylate) (PMMA). The grafting reaction is implemented via in situ electron beam irradiation-induced polymerization in the presence of fluorinated surfactants, generating PMMA grafted PTFE micropowder (PMMA–g–PTFE). The optimal degree of grafting (DG) is 17.8%. With the incorporation of PMMA–g–PTFE, the interfacial interaction between polyacrylate and PTFE is greatly improved, giving rise to uniform polyacrylate/PMMA–g–PTFE composites with a low surface energy. For instance, the loading content of PMMA–g–PTFE in polyacrylate is up to 16 wt %, leading to an increase of more than 20 degrees in the water contact angle compared to the pristine sample. This research paves a way to generate new polyacrylate-based films for embossed holography.
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Affiliation(s)
- Hui Wang
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Yingfeng Wen
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Haiyan Peng
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Chengfu Zheng
- National Anti-counterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Yuesheng Li
- School of Nuclear and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China.
| | - Sheng Wang
- School of Nuclear and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China.
| | - Shaofa Sun
- School of Nuclear and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China.
| | - Xiaolin Xie
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
- National Anti-counterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Xingping Zhou
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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Comparative study on gamma irradiation and cold plasma pretreatment for a cellulosic substrate modification with phenolic compounds. Radiat Phys Chem Oxf Engl 1993 2017. [DOI: 10.1016/j.radphyschem.2016.07.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Bazante-Yamaguishi R, Moura E, Manzoli JE, Geraldo AB. Radiation-grafted, chemically modified membranes part I – Synthesis of a selective aluminum material. Radiat Phys Chem Oxf Engl 1993 2014. [DOI: 10.1016/j.radphyschem.2013.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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