Time-domain NMR in polyolefin research

V Litvinov, Y Men - Polymer, 2022 - Elsevier
Polyethylene's and polypropylenes are most studied polymers by different solid-state NMR
methods. Among various NMR methodologies used, time-domain proton NMR (TD-NMR) …

[图书][B] Encyclopedia of polymer science and technology, 15 volume set

HF Mark - 2014 - oviss.co.jp
Written and peer reviewed by experts from around the globe, Encyclopedia of Polymer
Science and Technology provides up-to-date coverage of traditional topics of continuing …

[图书][B] Polymer morphology: principles, characterization, and processing

Q Guo - 2016 - books.google.com
With a focus on structure-property relationships, this book describes how polymer
morphology affects properties and how scientists can modify them. The book covers …

Heterogeneity in the distribution of entanglement density during polymerization in disentangled ultrahigh molecular weight polyethylene

A Pandey, Y Champouret, S Rastogi - Macromolecules, 2011 - ACS Publications
Ultrahigh molecular weight polyethylene is an engineering polymer that is widely used in
demanding applications because of its unparallel properties such as high abrasion …

Size-selective diffusion in nanoporous but flexible membranes for glucose sensors

H Uehara, M Kakiage, M Sekiya, D Sakuma… - Acs Nano, 2009 - ACS Publications
A series of nanoporous membranes prepared from polyethylene-block-polystyrene were
applied for size-selective diffusion of glucose and albumin molecules. Millimeter-sized test …

Crystallinity of polyolefins with large side groups by low-field 1H NMR T2 relaxometry: Isotactic Polybutene-1 with form II and I crystals

Y Qin, Y Qiao, W Chassé, V Litvinov, Y Men - Solid State Nuclear Magnetic …, 2020 - Elsevier
Phase composition and molecular mobility were studied using 1 H NMR T 2 relaxometry in
isotactic polybutene-1 (iPB-1) with two polymorphs-form I and II crystals. Several types of …

Use of Time-Domain NMR for 1H T1 Relaxation Measurement and Fitting Analysis in Homogeneity Evaluation of Amorphous Solid Dispersion

K Okada, T Ono, Y Hayashi, S Kumada… - Journal of Pharmaceutical …, 2024 - Elsevier
This study examined the usefulness of 1 HT 1 relaxation measurements for evaluating the
homogeneity of amorphous solid dispersion (ASD). Indomethacin and polyvinylpyrrolidone …

Crystallinity determination

J Runt, M Kanchanasopa - Encyclopedia of polymer science …, 2002 - Wiley Online Library
This article presents an overview of the most important experimental methods used to obtain
degrees of crystallinity of semicrystalline polymers. Determination of relative and absolute …

Effects of thermo‐oxidative aging on chain mobility, phase composition, and mechanical behavior of high‐density polyethylene

X Shi, J Wang, S Stapf, C Mattea, W Li… - … Engineering & Science, 2011 - Wiley Online Library
The thermo‐oxidative degradation behavior of high‐density polyethylene (HDPE) was
investigated during oven aging at 100° C. 1H low‐field solid‐state nuclear magnetic …

Novel in situ NMR measurement system for evaluating molecular mobility during drawing from highly entangled polyethylene melts

M Kakiage, H Uehara… - Macromolecular rapid …, 2008 - Wiley Online Library
A novel in situ measurement system for evaluating molecular mobility during uniaxial
drawing of polymeric materials was established by introducing drawing and stress‐detecting …