The frequency nature of the end effects in polymer dynamics and its NMR manifestations

1.NF Fatkullin, T Körber, EA Rössler, Polymer 142, 310-315, 2018. 2. IK Ostrovskaya, NF Fatkullin, Polymer Science, Series A 62 (2), 132-139, 2020. 3. IK Ostrovskaya, NF Fatkullin, T Körber, EA Rössler, A Lozovoi, C Mattea, S. Stapf, J. Chem. Phys. 152 (18), 184904, 2020 4. K.

Long-time behavior of the deuteron NMR Free Induction Decay of reptating polymer chains

The classical tube-reptation (TR) model is based on the assumption that in entangled polymer melts diffusion takes place inside the effective tubes having a conformation of ideal chains and being stable on the time scale of the terminal relaxation time . This assumption leads for high molecular mass

Intermolecular contribution to proton spin relaxation in polymer melts: new perspectives for experimental study of polymer melt dynamics Artur Lozovoi , Carlos Mattea, Ernst Rössler, SiegfriedStapf, Nail Fatkullin. (Из-за проблем с получением визы доклад сделан А. Лозовым )

Recent progress in application of proton NMR to study of dynamics of highly molecular mass polymer melts is closely connected with reconsideration of the role of the intermolecular magnetic dipole-dipole interactions in proton spin relaxation. As it appears, the intermolecular contribution is not

Comparative study of proton and deuteron relaxation in polymer melts: what can we learn from it about polymer dynamics

Polymer Dynamics Studied by Field-Cycling NMR Relaxometry Authors: Marius Hofmann, Benjamin Kresse ,Alexei Privalov , Franz Fujara , Nail Fatkullin , Ernst Roessler

We apply Field-Cycling (FC) 1H NMR relaxometry to study translational as well as reorientational segmental dynamics in linear polymer melts. Assuming frequency-temperature superposition the fluctuation spectrum of the dipole-dipole interaction J(ω) is probed over ten decades in frequency, cover

ЯМР протонов в полимерных расплавах

Дан обзор новых результатов полученных в спиновой кинетике протонов полимерных расплавов.

Recent advances in the study of high molecular mass polymer melts diffusion by proton NMR

In high molecular mass polymer melts due to the linear structure of macromolecules and their mutual uncrossability a region of anomalous diffusion cover a very broad space/time interval. It extends up to the terminal relaxation time of a macromolecule , where is the segmental relaxation time and

Fatkullin N.F. NMR PROTON SPIN RELAXATION AND DYNAMICS OF POLYMER 10-15 ? 11-00, Monday, November 13

Proton spin-lattice and spin-spin relaxation are governed by magnetic dipole-dipole interactions between protons from the same and the different macromolecules. The spin-lattice relaxation rate in case when the Redfield limit is satisfied, ( is the resonance frequency, is the spin-lattic

NMR STUDY OF TRANSVERSE RELAXATION IN POLYMER MELTS A. Lozovoi, S.Stapf, N.Fatkullin, C.Matter

The proton spin relaxation kinetics and hence the proton spin dynamics in polymer melts is mainly determined by magnetic dipole-dipole interactions. Previously in proton NMR in polymer melts it was always supposed that the dominant contribution to the dipole-dipole correlation function is an interm

Simple derivation of Bloch Equation.

An elementary derivation of Bloch equations is presented.

Proton spin dynamics in polymer melts: new perspectives for experimental investigations of polymer melts

Proton spin kinetics in polymer melts: new perspectives for experimental investigations of polymer dynamics. N. Fatkullin, S.Stapf, E. Rossler (N.Fatkullin - speaker)

Computer simulation of the influence of collective effects on polymer melts dynamics in confinemet. Timur Shakirov, Fatkullin Nail, Stapf Siegfrid, Khalatur Pavel, Rainer Kimmich

Segmantal reorentations and diffusion in polymer melts revealed by FC NMR. M. Hofmann, HermannAxel, Abou Elfald Azza, Kruk Danuta, Wohlfaht Matthias, Kresse Benjamin, Bauer Irene, Privalov Alexei, Fatkullin Nail, Fuyara Franz, Rossler Ernst