Enviar artigo por via de e-mail Determination of the shape and dimensions of the polymer molecules in solutions using diffusional NMR relaxation
- Autores: Ivanova V.A.1, Maksimychev A.V.2, Men’shikov P.L.1,3, Pashutin A.R.1, Perepukhov A.M.1,4, Rozhkov A.N.5, Tsar’kov M.V.1
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Afiliações:
- Moscow Institute of Physics and Technology
- Moscow Institute of Physics and Technologya
- National Research Center "Kurchatov Institute"
- Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences
- Ishlinsky Institute for Problems in Mechanics, of the Russian Academy of Sciences
- Edição: Nº 2 (2024)
- Páginas: 135-138
- Seção: Articles
- URL: https://vietnamjournal.ru/1024-7084/article/view/672107
- DOI: https://doi.org/10.31857/S1024708424020127
- EDN: https://elibrary.ru/risuuk
- ID: 672107
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Resumo
A new method of determining the dimensions and shapes of polymer molecules in solutions is proposed and verified in experiments. The method is based on the measurements of the relaxation of the transverse magnetization intensity of nuclei. It is established that the decaying signal of the spin echo from elongated molecules contains two terms exponentially decaying with time, which correspond to two diffusion coefficients differing by a factor of about two. The signal from molecules with a near-spherical shape contain only one exponent.
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Sobre autores
V. Ivanova
Moscow Institute of Physics and Technology
Email: valeriya.ivanova@phystech.edu
Rússia, Dolgoprudny, Moscow Region, 141701 Russia
A. Maksimychev
Moscow Institute of Physics and Technologya
Email: maksimychev.av@mipt.ru
Rússia, Dolgoprudny, Moscow Region, 141701 Russi
P. Men’shikov
Moscow Institute of Physics and Technology; National Research Center "Kurchatov Institute"
Email: menshikov2005@mail.ru
Rússia, Dolgoprudny, Moscow Region, 141701 Russia; Moscow, 123182 Russia
A. Pashutin
Moscow Institute of Physics and Technology
Email: nituhsap@mail.ru
Rússia, Dolgoprudny, Moscow Region, 141701 Russia
A. Perepukhov
Moscow Institute of Physics and Technology; Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences
Email: aleksandr-iv@mail.ru
Rússia, Dolgoprudny, Moscow Region, 141701; Moscow
A. Rozhkov
Ishlinsky Institute for Problems in Mechanics, of the Russian Academy of Sciences
Email: rozhkov@ipmnet.ru
Rússia, Moscow, 119526 Russia
M. Tsar’kov
Moscow Institute of Physics and Technology
Autor responsável pela correspondência
Email: m.carkov@phystech.edu
Rússia, Dolgoprudny, Moscow Region, 141701 Russia
Bibliografia
- Гросберг А.Ю., Хохлов А.Р. Статистическая физика макромолекул. М.: Наука, 1989. 343 с.
- Лэмб Г. Гидродинамика. М.-Л.: Гостехиздат, 1947. 928 с.
- Palmin V., Mukhin A., Ivanova V., Perepukhov A., Nozik A. Automated component analysis in DOSY NMR using information criteria // J. Magn. Res. 2023. V. 355. Article 107541.
- Сликтер Ч. Основы магнитного резонанса. М.: Мир, 1981. 448 с.
- Чижик В.И. Ядерная магнитная релаксация. СПб.: Изд-во Санкт-Петербург. ун-та, 2000. 385 с.
- Carr H. Y., Purcell E. M. Effects of diffusion on free precession in nuclear magnetic resonance experiments // Phys. Rev. 1954. V. 94. P. 630–638.
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