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Journal Articles

Fluoropolymer-based nanostructured membranes created by swift-heavy-ion irradiation and their energy and environmental applications

Yamaki, Tetsuya*; Nuryanthi, N.*; Kitamura, Akane; Koshikawa, Hiroshi*; Sawada, Shinichi*; Voss, K.-O.*; Severin, D.*; Tautmann, C.*

Nuclear Instruments and Methods in Physics Research B, 435, p.162 - 168, 2018/11

 Times Cited Count:1 Percentile:72.34(Instruments & Instrumentation)

We used individual single-ion tracks in fluoropolymers with diameters of tens to hundreds of nanometers; chemical etching and ion-track grafting enabled us to develop ion-track and proton-conductive membranes, respectively. In the ion-track membranes of PVDF, strongly-LET-dependent etching was found, so the pore shape as well as the size was exclusively controlled by the track structures. We performed the ion-track grafting of styrene into ETFE to develop nanostructure-controlled proton exchange membranes (PEMs) for applications in PEM fuel cells. Our ion beam technology to develop fluoropolymer-based nanostructures has the potential to apply in the field of filtration processes and fuel cell devices. This would make it possible to provide new microfiltration technology for water treatment, sterilization, petroleum refining and dairy processing.

Journal Articles

Preparation of nano-structure controlled ion-exchange membranes by ion beams and their application to seawater concentration

Yamaki, Tetsuya*; Goto, Mitsuaki*; Sawada, Shinichi*; Koshikawa, Hiroshi*; Kitamura, Akane; Higa, Mitsuru*

QST-M-8; QST Takasaki Annual Report 2016, P. 35, 2018/03

We prepared ion exchange membranes by a heavy-ion-track grafting method, and then used them for seawater concentration process. Both the water uptake and resistance were lower for our ion-track grafted membranes than for the conventional $$gamma$$-ray-grafted membranes. The results would be because local and high-density energy deposition due to the ion beam enabled us to control the membrane structure in a nanometer scale. We demonstrate our membranes are suitable for this application.

Journal Articles

Electrodialysis of hydriodic acid in the presence of iodine

Onuki, Kaoru; Hwang, G.; Shimizu, Saburo

Journal of Membrane Science, 175(1), p.171 - 179, 2000/07

no abstracts in English

Journal Articles

High temperature electrodialysis of hydriodic acid containing iodine

Onuki, Kaoru; Hwang, G.; Shimizu, Saburo

Maku Shimpojium '99 Hobunshu, (11), p.37 - 40, 1999/00

no abstracts in English

JAEA Reports

None

PNC-TJ1150 96-005, 23 Pages, 1996/03

PNC-TJ1150-96-005.pdf:0.7MB

None

JAEA Reports

None

PNC-TJ1150 96-004, 128 Pages, 1996/03

PNC-TJ1150-96-004.pdf:7.12MB

None

Journal Articles

Application of ion-exchange membrane source to preparation of calibration source simulating filter paper for dust monitors

Oishi, Tetsuya; Yoshida, Makoto; Mizugaki, Toshio; Sugo, Takanobu

IRPA9: 1996 International Congress on Radiation Protection, Proceedings, 3, p.44 - 46, 1996/00

no abstracts in English

Journal Articles

Radiation-induced graft polymerization of vinyl benzyltrimethylammonium chloride onto polyethylene film

Y.C.Nho*; Sugo, Takanobu; *; Makuuchi, Keizo

Journal of Applied Polymer Science, 51(7), p.1269 - 1275, 1994/02

 Times Cited Count:17 Percentile:37.76(Polymer Science)

no abstracts in English

Journal Articles

Preparation of beta-ray calibration sources for estimating tissue doses from skin contamination

Yoshida, Makoto; Murakami, Hiroyuki;

Journal of Nuclear Science and Technology, 30(4), p.333 - 338, 1993/04

 Times Cited Count:1 Percentile:80.45(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Synthesis of membranes with radiotion-induced grafting and their application

Kobunshi No Bimu Kako, p.245 - 254, 1987/00

no abstracts in English

Journal Articles

Electrical and other properties of mutual radiation-induced methacrylic acid grafted polyethylene films

Omichi, Hideki; D.Chundury*; V.T.Stannett*

Journal of Applied Polymer Science, 32(5), p.4827 - 4836, 1986/00

 Times Cited Count:22 Percentile:24.81(Polymer Science)

no abstracts in English

Journal Articles

The method for making plane source using ion-exchange membrane

; ; ; ;

Radioisotopes, 34(9), p.497 - 500, 1985/00

no abstracts in English

Journal Articles

Effect of mixed monomers on the synthesis of ion-exchange membranes by radiation-induced grafting

;

J.Appl.Polym.Sci., 30, p.1277 - 1284, 1984/00

 Times Cited Count:18 Percentile:28.6(Polymer Science)

no abstracts in English

Journal Articles

Solvent effects on the synthesis of ion-exchange membranes by radiation-induced graft polymerization of methyl $$alpha$$,$$beta$$,$$beta$$-trifluoroacrylate

;

Journal of Polymer Science; Polymer Chemistry Edition, 20, p.1559 - 1568, 1982/00

no abstracts in English

Journal Articles

Synthesis of an ion exchange membrane by radiation-induced grafting of acrylic acid onto poly(tetrafluoroethylene )

; *; ; Machi, Sueo

Polym.J., 10(5), p.513 - 519, 1978/05

 Times Cited Count:48

no abstracts in English

Journal Articles

The treatment of radioactive wastes with ion exchange membrane electrodialyzer

; ; *

Nippon Genshiryoku Gakkai-Shi, 2(8), P. 460, 1960/00

no abstracts in English

Journal Articles

Study on the continuous deionization by an ion exchange membrane(built-in ion exchange resin) in dilute radioactive solutions

;

Dai-2-Kai Genshiryoku Shimpojiumu Hobunshu, P. 63, 1958/00

no abstracts in English

Oral presentation

Development of cation exchange membrane for hydrogen production

Kodaira, Takahide*; Ikeda, Ayumi*; Matsuyama, Emi*; Kono, Nobuho*; Oura, Kotone*; Sawada, Shinichi; Yamaki, Tetsuya; Nomura, Mikihiro*

no journal, , 

In the thermochemical water splitting IS process, the Bunsen reaction (SO$$_{2}$$ + I$$_{2}$$ + 2H$$_{2}$$O = H$$_{2}$$SO$$_{4}$$ + 2HI) needs to be achieved in an electrochemical cell with an ion exchange membrane. As part of an ongoing JST-ALCA project, therefore, we developed ion exchange membranes for this reaction by radiation-induced graft polymerization, investigating their water permeation properties by the pervaporation method. Our membrane preparation involves the $$gamma$$-ray-induced grafting of styrene and divinylbenzene into poly(ethylene-${it co}$-tetrafluoroethylene) films and the subsequent sulfonation. Water permeate flux values at 25$$^{circ}$$C were 7.4 and 19 kg/m$$^{2}$$h through the grafted membrane and Nafion 212 at the same water uptake (37%), respectively.

Oral presentation

Development of polymeric ion exchange membranes by radiation-induced graft polymerization for application in electrodialysis

Chen, J.; Asano, Masaharu; Maekawa, Yasunari

no journal, , 

Electrodialysis is an electrochemical process mainly used for the isolation and concentration of ionic species from aqueous solution. In this study, we develop radiation grafting polymeric ion exchange membranes for application in electrodialysis to remove metal ions in water. Two monomers of styrene derivatives, ethyl styrenesulfonate (ETSS) and chloromethyl styrene (CMS), were grafted onto poly(ethylene-co-tetrafluoroethylene) (ETFE) films by the radiation induced graft polymerization. The ETSS- and CMS-grafted films were easily converted into cation and anion exchange membranes, respectively. The resultant membranes showed similar range of ion exchange capacity (IEC), but the conductivity of the cation exchange membranes was higher than that of the anion exchange membranes with the same IEC level. Furthermore, the membranes with high IEC got the high electrodialysis speed, while those with low IEC had the high removal percent.

19 (Records 1-19 displayed on this page)
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