Nanoporosity of Polymer Membrane Materials and Sorbents According to Positron Annihilation and Low-Temperature Gas Sorption Data
- Autores: Shantarovich V.P.1, Bekeshev V.G.1, Kevdina I.B.1, Yampolskii Y.P.2, Bermeshev M.V.2, Belov N.A.2
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Afiliações:
- Semenov Institute of Chemical Physics
- Topchiev Institute of Petrochemical Synthesis
- Edição: Volume 52, Nº 4 (2018)
- Páginas: 275-282
- Seção: General Aspects of High Energy Chemistry
- URL: https://bakhtiniada.ru/0018-1439/article/view/157420
- DOI: https://doi.org/10.1134/S0018143918040148
- ID: 157420
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Resumo
Based on the experimental data obtained by the authors in a number of previous studies, the limits of applicability of positron annihilation lifetime spectroscopy (PALS) and low-temperature gas sorption (LTGS) to determination of nanoporosity (size distribution of nanopores in the range from a few fractions of a nanometer to 50 nm) in polymeric membrane materials and sorbents are discussed. It turns out that none of these methods is universal. The possibility of using each of them is determined by different factors, with the cases considered being finely divided polymer materials and the membranes per se cast from powders. It has been shown that the particle size factor is important for the applicability of LTGS. The possibility of using PALS depends on the concentration of nanopores of a given size.
Sobre autores
V. Shantarovich
Semenov Institute of Chemical Physics
Autor responsável pela correspondência
Email: shant@center.chph.ras.ru
Rússia, Moscow, 119991
V. Bekeshev
Semenov Institute of Chemical Physics
Email: shant@center.chph.ras.ru
Rússia, Moscow, 119991
I. Kevdina
Semenov Institute of Chemical Physics
Email: shant@center.chph.ras.ru
Rússia, Moscow, 119991
Yu. Yampolskii
Topchiev Institute of Petrochemical Synthesis
Email: shant@center.chph.ras.ru
Rússia, Moscow, 119991
M. Bermeshev
Topchiev Institute of Petrochemical Synthesis
Email: shant@center.chph.ras.ru
Rússia, Moscow, 119991
N. Belov
Topchiev Institute of Petrochemical Synthesis
Email: shant@center.chph.ras.ru
Rússia, Moscow, 119991
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