Proton multiple-quantum NMR for the study of chain dynamics and structural constraints in polymeric soft materials

K Saalwächter - Progress in Nuclear Magnetic Resonance …, 2007 - Elsevier
This article reviews the principles and applications of one of the currently most powerful
NMR approaches for the characterization of chain motion in elastomers, entangled 0079 …

multiple-quantum nuclear magnetic resonance investigations of molecular order distributions in poly(dimethylsiloxane) networks: Evidence for a linear mixing law in …

K Saalwächter, P Ziegler, O Spyckerelle… - The Journal of …, 2003 - pubs.aip.org
We present proton–proton multiple-quantum investigations on a series of monomodal and
strongly bimodal end-linked poly (dimethylsiloxane) model networks. A robust pulse …

Stress-Induced Crystallization and Reinforcement in Filled Natural Rubbers:  2H NMR Study

J Rault, J Marchal, P Judeinstein, PA Albouy - Macromolecules, 2006 - ACS Publications
Stress-induced crystallization (SIC) and stress-induced melting (SIM) in pure and filled
(carbon black, CB) natural rubbers are studied by mechanical analysis, X-ray scattering, and …

Microscopic observation of the anisotropy of the Johari–Goldstein-β process in cross-linked polybutadiene on stretching by time-domain interferometry

R Mashita, M Saito, Y Yoda, N Nagasawa… - ACS Macro …, 2024 - ACS Publications
The strain dependence of the Johari–Goldstein (JG)-β relaxation time, as well as the
directional dependence, was systematically investigated for stretched cross-linked …

Chain entanglements in polyethylene melts. Why is it studied again?

VM Litvinov, ME Ries, TW Baughman, A Henke… - …, 2013 - ACS Publications
The aim of this study is to revisit the characterization of entanglement density in polyethylene
melts by studying a series of well-defined, high molecular weight polyethylene materials via …

Strain-Induced Molecular Orientation and Crystallization in Natural and Synthetic Rubbers under Uniaxial Deformation by In-situ Synchrotron X-ray Study

S Toki, I Sics, S Ran, L Liu, BS Hsiao… - Rubber chemistry …, 2004 - meridian.allenpress.com
In-situ synchrotron wide-angle X-ray diffraction (WAXD) studies and simultaneous
measurements of stress and strain during uniaxial stretching of various vulcanized rubbers …

NMR lineshapes and lineshape fitting procedures

J Higinbotham, I Marshall - 2001 - Elsevier
Publisher Summary This chapter discusses the nuclear magnetic resonance (NMR)
lineshapes and the lineshape fitting procedures. Of the various common NMR lineshapes …

Local chain deformation and overstrain in reinforced elastomers: An NMR study

R Pérez-Aparicio, M Schiewek, JL Valentín… - …, 2013 - ACS Publications
A molecular-level understanding of the strain response of elastomers is a key to connect
microscopic dynamics to macroscopic properties. In this study we investigate the local strain …

Chain order in filled SBR elastomers: a proton multiple-quantum NMR study

K Saalwächter, M Klüppel, H Luo… - Applied Magnetic …, 2004 - Springer
A series of cross-linked styrene-butadiene rubbers (SBR) filled with different amounts of
carbon black and silica are investigated by proton multiple-quantum nuclear magnetic …

NMR Reveals Non‐Distributed and Uniform Character of Network Chain Dynamics

K Saalwächter, JU Sommer - Macromolecular rapid …, 2007 - Wiley Online Library
Results of different NMR investigations of elastomers are reviewed with respect to their
significance for statistical models of rubber elasticity. In contrast to earlier work based on …