Work

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

Year: 2024

Type: article

Abstract: 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.

Source: Fluid Dynamics

DOI: 10.31857/s1024708424020127

Authors: V. A. Ivanova, A. V. Maksimychev, P. L. Men’shikov, A. R. Pashutin, A. M. Perepukhov, A. N. Rozhkov, M. V. Tsar’kov

Institutions: Moscow Institute of Physics and Technology, Kurchatov Institute, Russian Academy of Sciences, N.D. Zelinsky Institute of Organic Chemistry, Institute for Problems in Mechanics

Language: English

Topic: NMR spectroscopy and applications

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W4403565464

FWCI:

Cites: 2

Cited by:

Related to: 10