Behavior of Water during Temperature-Induced Phase Separation in Poly(vinyl methyl ether) Aqueous Solutions. NMR and Optical Microscopy Study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10105160" target="_blank" >RIV/00216208:11320/11:10105160 - isvavai.cz</a>
Alternative codes found
RIV/61389013:_____/11:00358849
Result on the web
<a href="http://dx.doi.org/10.1021/ma200010h" target="_blank" >http://dx.doi.org/10.1021/ma200010h</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/ma200010h" target="_blank" >10.1021/ma200010h</a>
Alternative languages
Result language
angličtina
Original language name
Behavior of Water during Temperature-Induced Phase Separation in Poly(vinyl methyl ether) Aqueous Solutions. NMR and Optical Microscopy Study
Original language description
The behaviour of water during the temperature-induced phase separation in PVME/D2O solutions was investigated by 1H NMR methods and optical microscopy. A fast exchange between water (HDO) bound in mesoglobules and free water was found from 1H NMR spin-spin relaxation measurements at temperature above the LCST transition for semidilute PVME/D2O solutions where the exchange time is 1.2 ms for c = 6 wt%. In contrast, there is a slow exchange between bound and free water in highly concentrated PVME solutions and the residence time of the bound water 2 s was found for concentrations c = 20-50 wt% using one-dimensional NOE 1H NMR experiment. A three orders of magnitude slower exchange in highly concentrated PVME/D2O solutions is in accord with our optical microscopy findings that globular-like structures are here approx. 20 times larger than in PVME solution with c = 6 wt%.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/GA202%2F09%2F1281" target="_blank" >GA202/09/1281: Stimuli-responsive multicomponent polymer systems in aqueous solutions and gels investigated by NMR and other methods</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Macromolecules
ISSN
0024-9297
e-ISSN
—
Volume of the periodical
44
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
2149-2153
UT code for WoS article
000289028500055
EID of the result in the Scopus database
—