Behavior of NAFION Perfluorosulfonate Ionomer Membranes in Presence of Tritiated Water

Matei, Lidia; Postolache, C.; Cristescu, I.; Brad, Sebastian

doi:10.13182/fst08-a1857

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…This means that only half of the sulfur atoms in water solutions were sulfate and the other half of sulfur were present in other forms such as sulfur-containing organic fragments. Quantum chemical simulation of the Nafion structure revealed weak carbon-carbon bonds in the pedant chain bearing the sulfonic group (9). Formation of sulfur-containing organic fragments from Nafion membrane is possible under radiation.…”

Section: Resultsmentioning

confidence: 98%

Radiation Effects on the Performance of Proton Exchange Membranes in Electrochemical Cells

Krishnaswamy

Suppiah

et al. 2013

ECS Trans.

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Proton exchange membranes (PEMs) are being studied for tritium separation applications involving electrochemical processes. The effects of γ- and β-radiation on Nafion 112 membrane are discussed in this paper. The fluoride and sulfate release from Nafion 112 membrane increases with increase in γ-dose. Oxygen promotes the total organic carbon (TOC) release while hydrogen suppresses sulfur release. A β-radiation dose of 200 kGy from tritium causes minor damage to the membrane, comparable to the effect of γ-radiation at similar dose. The FTIR spectrum of tritium-exposed membranes is similar to that of the reference samples except for a weak peak of C=O stretch observed at 1740 cm-1. The conductivity and electrochemical performance of the tritium-exposed and reference membrane samples are not significantly different during the fuel cell and water electrolysis tests. It is believed that β-radiation is likely to attack the carbon chain in Nafion 112 membrane.

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Section: Resultsmentioning

confidence: 98%

Radiation Effects on the Performance of Proton Exchange Membranes in Electrochemical Cells

Krishnaswamy

Suppiah

et al. 2013

ECS Trans.

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“…The radio-induced uoride release was studied by determination of pH and F − ions concentration using a WTW INOLAB MULTI 720 pH-meter with F − selective electrode [5]. The radiochemical yields were estimated by correlation between the obtained results, sample masses and absorbed doses.…”

Section: Evaluation Of Radiolytic Processes By Ir Spectrometry and Uomentioning

confidence: 99%

Behavior of Fluoropolymers in Presence of Tritiated Water

et al. 2015

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The behaviour of Polytetrauoroethylene (PTFE), NAFION ionomer membranes and VITON uoroelastomer in presence of high activity tritiated water (HTO) was analysed. Radiolytic stability of the uoropolymersHTO system was analysed by: (a) Simulation of radiolytic processes by quantum mechanical methods, (b) Simulation of radiolytic eects by exposure of uoropolymers immersed in H2O to 60 Co gamma radiation eld, (c) Immersing of uoropolymers samples in HTO with high activity, for dierent time periods. In both cases the samples were characterized by FT IR ATR, and study of emission of uoride ions from polymer matrix.

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Decontamination of Proton Exchange Membranes After Tritium Exposure

Muirhead

Pilatzke

et al. 2017

Fusion Science and Technology

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Behavior of NAFION Perfluorosulfonate Ionomer Membranes in Presence of Tritiated Water

Cited by 5 publications

References 5 publications

Radiation Effects on the Performance of Proton Exchange Membranes in Electrochemical Cells

Radiation Effects on the Performance of Proton Exchange Membranes in Electrochemical Cells

Behavior of Fluoropolymers in Presence of Tritiated Water

Decontamination of Proton Exchange Membranes After Tritium Exposure

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