Determination of the shape and dimensions of the polymer molecules in solutions using diffusional NMR relaxation

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Аннотация

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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Авторлар туралы

V. Ivanova

Moscow Institute of Physics and Technology

Email: valeriya.ivanova@phystech.edu
Ресей, Dolgoprudny, Moscow Region, 141701 Russia

A. Maksimychev

Moscow Institute of Physics and Technologya

Email: maksimychev.av@mipt.ru
Ресей, Dolgoprudny, Moscow Region, 141701 Russi

P. Men’shikov

Moscow Institute of Physics and Technology; National Research Center "Kurchatov Institute"

Email: menshikov2005@mail.ru
Ресей, Dolgoprudny, Moscow Region, 141701 Russia; Moscow, 123182 Russia

A. Pashutin

Moscow Institute of Physics and Technology

Email: nituhsap@mail.ru
Ресей, 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
Ресей, Dolgoprudny, Moscow Region, 141701; Moscow

A. Rozhkov

Ishlinsky Institute for Problems in Mechanics, of the Russian Academy of Sciences

Email: rozhkov@ipmnet.ru
Ресей, Moscow, 119526 Russia

M. Tsar’kov

Moscow Institute of Physics and Technology

Хат алмасуға жауапты Автор.
Email: m.carkov@phystech.edu
Ресей, Dolgoprudny, Moscow Region, 141701 Russia

Әдебиет тізімі

  1. Гросберг А.Ю., Хохлов А.Р. Статистическая физика макромолекул. М.: Наука, 1989. 343 с.
  2. Лэмб Г. Гидродинамика. М.-Л.: Гостехиздат, 1947. 928 с.
  3. 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.
  4. Сликтер Ч. Основы магнитного резонанса. М.: Мир, 1981. 448 с.
  5. Чижик В.И. Ядерная магнитная релаксация. СПб.: Изд-во Санкт-Петербург. ун-та, 2000. 385 с.
  6. 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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