Physical science of materials

Resistance to free-radical attacks of the of the nanocomposite ion-exchange polymer Nafion-few-layer graphene

A. G. Kastsova, A. A. Nechitailov, N. V. Glebova, A. O. Pelageikina, A. O. Krasnova

Ioffe Institute, St. Petersburg

Abstract: The proton-exchange polymer Nafion has practical applications in various fields of science and technology, such as electrochemical systems, ion-exchange water purification systems, production of ultrapure materials, and more. The durability and stability of this polymer are important for expanding its application range. Nafion/few-layer graphene composites demonstrated enhanced thermal stability of the proton-exchange polymer Nafion compared to the pure material. The gravimetric method was used to study the free-radical attack of -OH radicals formed in the Fenton reaction on substrates made of different materials (silicone, polyethylene, glass, silicon) and composite films of Nafion/few-layer graphene on them. Based on experiments and statistical analysis of the experimental data array, the conditions (substrate material, error margin, sensitivity) for the applicability of the stability measurement method for the composite via mass loss were determined. The data of the study of the stability of Nafion/few-layer graphene composites of different component compositions are presented.

Keywords: sulfopolymer, gravimetry, fenton reaction, stableness.

Received: 03.03.2025
Revised: 03.05.2025
Accepted: 20.06.2025

DOI: 10.61011/JTF.2025.11.61601.28-25

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