Radiation-induced graft polymerization and sulfonation of glycidyl methacrylate on to porous hollow-fiber membranes with different pore sizes |
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| Affiliation: | 1. Department of Safety Engineering, Dong-Guk University, Kyung-Ju, South Korea;2. Department of Materials Technology, Chiba University, Inage, Chiba, 263-8522, Japan;1. Çanakkale Onsekiz Mart University, Faculty of Sciences and Arts, Department of Chemistry, Polymer Synthesis and Analysis Laboratory, 17020 Çanakkale, Turkey;2. Kaleseramik AR-GE Research, Kaleseramik R&D Center, Kaleseramik Çanakkale Kalebodur Ceramic Industries Inc., Çan, Çanakkale, Turkey;1. Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown, 2193, South Africa;2. Refractories, Ceramics and Building materials Department, National Research Centre, 33El Bohouth St. (former El-Tahrir St.), Dokki, P.O.12622, Giza, Egypt;1. Laboratory on Quantum Theory in Linkoping, ISIR, P.O. Box 8017, S-580, Linkoping, Sweden;2. National University for Food Technologies, Volodymyrska str. 68, Kyiv, 01601, Ukraine;1. Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China;2. Department of Pharmacology, Gannan Medical College, Jiangxi Province, PR China;1. School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China;2. College of Chemistry & Molecule Sciences, Wuhan University, Wuhan 430072, China;3. CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Pólo Universitário da Ajuda, 1300-477 Lisboa, Portugal,;4. the Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal, |
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| Abstract: | An epoxy group containing monomer, glycidyl methacrylate, was grafted on to a porous hollow-fiber membrane, made of polyethylene, whose different pore sizes ranged from 0.2 to 0.5 μm. The resulting epoxy group was converted into a sulfonic acid group as a cation-exchange group to capture metal ions. The porous network was retained after grafting and subsequent sulfonation because the poly-GMA chains invaded the polymer matrix. An increase in the SO3H group density of the graft chain decreased the permeability of pure water because the graft chains expanded toward the pore interior due to their mutual electrostatic repulsion. The ion-exchange adsorption of Pb ions during the permeation of a Pb(NO3)2 solution through the pores edged by the cation-exchange graft chains was observed with a negligible diffusional mass-transfer resistance. |
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