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Hamada T, Zhao Y, Yoshimura K, Radulescu A, Ohwada K, Maekawa Y. Hydrophobic Effect on Alkaline Stability of Graft Chains in Ammonium‐type Anion Exchange Membranes Prepared by Radiation‐Induced Graft Polymerization. ChemistrySelect 2021. [DOI: 10.1002/slct.202102045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Takashi Hamada
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute Quantum Beam Science Research Directorate National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki Takasaki Gunma 370-1292 Japan
- Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kagamiyama Higashi Hiroshima 739-8527 Japan
| | - Yue Zhao
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute Quantum Beam Science Research Directorate National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki Takasaki Gunma 370-1292 Japan
| | - Kimio Yoshimura
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute Quantum Beam Science Research Directorate National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki Takasaki Gunma 370-1292 Japan
| | - Aurel Radulescu
- Forschungszentrum Jülich GmbH Lichtenbergstraße 1 D-85747 Garching Germany
| | - Kenji Ohwada
- Synchrotron Radiation Research Center Quantum Beam Science Research Directorate National Institutes for Quantum and Radiological Science and Technology (QST) 1-1-1 Kouto Sayo Hyogo 679-5148 Japan
| | - Yasunari Maekawa
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute Quantum Beam Science Research Directorate National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki Takasaki Gunma 370-1292 Japan
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Coating of Polyetheretherketone Films with Silver Nanoparticles by a Simple Chemical Reduction Method and Their Antibacterial Activity. COATINGS 2019. [DOI: 10.3390/coatings9020091] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The coating of polymeric substrate polyetheretherketone (PEEK) with silver nanoparticles (AgNPs) was carried out by a wet chemical route at room temperature. The coating process was developed from the Tollens reagent and D-glucose as reducing agent. The resulting composite exhibited antimicrobial activity. The PEEK films were coated with a single layer and two layers of silver nanoparticles in various concentrations. The crystallographic properties of the polymer and the silver nanoparticles were analyzed by X-ray diffraction (XRD). Fourier transform infrared spectra (FTIR) show the interaction between the silver nanoparticles with the polymeric substrate. Transmission electron microscope (TEM) images confirmed the obtaining of metallic nanoparticles with average sizes of 25 nm. It was possible to estimate the amount of silver deposited on PEEK with the help of thermogravimetric analysis. The morphology and shape of the AgNPs uniformly deposited on the PEEK films was ascertained by the techniques of scanning electron microscopy (SEM) and atomic force microscopy (AFM), evidencing the increase in the amount of silver by increasing the concentration of the metal precursor. Finally, the antibacterial activity of the films coated with Ag in Escherichia coli, Serratia marcescens and Bacillus licheniformis was evaluated, evidencing that the concentration of silver is crucial in the cellular replication of the bacteria.
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Hamada T, Yoshimura K, Hiroki A, Maekawa Y. Synthesis and characterization of aniline‐containing anion‐conducting polymer electrolyte membranes by radiation‐induced graft polymerization. J Appl Polym Sci 2018. [DOI: 10.1002/app.46886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Takashi Hamada
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki, Takasaki Gunma 370‐1292 Japan
| | - Kimio Yoshimura
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki, Takasaki Gunma 370‐1292 Japan
| | - Akihiro Hiroki
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki, Takasaki Gunma 370‐1292 Japan
| | - Yasunari Maekawa
- Department of Advanced Functional Materials Research Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology (QST) 1233 Watanuki, Takasaki Gunma 370‐1292 Japan
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Hamada T, Hasegawa S, Maekawa Y. Control of Radiation/Living Graft Polymerization in the Solid State. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700346] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takashi Hamada
- Department of Advanced Functional Materials Research; Takasaki Advanced Radiation Research Institute; Quantum Beam Science Research Directorate; National Institutes for Quantum and Radiological Science and Technology (QST); 1233 Watanuki Takasaki Gunma 370-1292 Japan
| | - Shin Hasegawa
- Department of Advanced Functional Materials Research; Takasaki Advanced Radiation Research Institute; Quantum Beam Science Research Directorate; National Institutes for Quantum and Radiological Science and Technology (QST); 1233 Watanuki Takasaki Gunma 370-1292 Japan
| | - Yasunari Maekawa
- Department of Advanced Functional Materials Research; Takasaki Advanced Radiation Research Institute; Quantum Beam Science Research Directorate; National Institutes for Quantum and Radiological Science and Technology (QST); 1233 Watanuki Takasaki Gunma 370-1292 Japan
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Nasef MM. Radiation-Grafted Membranes for Polymer Electrolyte Fuel Cells: Current Trends and Future Directions. Chem Rev 2014; 114:12278-329. [DOI: 10.1021/cr4005499] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mohamed Mahmoud Nasef
- Advanced Materials
Research Group, Institute of Hydrogen Economy, and ‡Environmental
and Green Technology Department, Malaysia-Japan International Institute
of Technology (MJIIT), Universiti Teknologi Malaysia (UTM), International
Campus, Jalan Semarak, 54100 Kuala Lumpur, Malaysia
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Gautam D, Ikram S, Gupta B. Structural characterization of alpha methyl styrene-butyl acrylate-grafted polyetheretherketone films. J Appl Polym Sci 2013. [DOI: 10.1002/app.38507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhang H, Shen PK. Advances in the high performance polymer electrolyte membranes for fuel cells. Chem Soc Rev 2012; 41:2382-94. [DOI: 10.1039/c2cs15269j] [Citation(s) in RCA: 281] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Chen J, Li D, Koshikawa H, Asano M, Maekawa Y. Crosslinking and grafting of polyetheretherketone film by radiation techniques for application in fuel cells. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.07.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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