NMR methods to study effects of additives on phase separation of thermoresponsive polymer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F14%3A00428180" target="_blank" >RIV/61389013:_____/14:00428180 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/masy.201300130" target="_blank" >http://dx.doi.org/10.1002/masy.201300130</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/masy.201300130" target="_blank" >10.1002/masy.201300130</a>
Alternative languages
Result language
angličtina
Original language name
NMR methods to study effects of additives on phase separation of thermoresponsive polymer
Original language description
NMR methods including 1H NMR spectroscopy, 2D NOESY spectroscopy, pulsed-field gradient (PFG) NMR as well as spin-spin relaxation times T2 measurement were employed to study the effects of one surfactant (sodium n-dodecyl sulfate, SDS) and three inorganic salts (NaCl, Na2SO4, Na3PO4) on the phase transition of poly(N-isopropylacrylamide) (PNIPAM) in aqueous solution. The molecular interactions between SDS and PNIPAM during the coil-to-globule transition of PNIPAM have been accurately observed through 2DNOESY spectra and PFG NMR. Through the combination of 1H NMR spectra and T2 measurements, the salts effects have been found not only shift the phase transition of PNIPAM but also lead to difference in the final conformational state of PNIPAM in aqueoussolution after phase transition. Diffusion coefficients of Na+ cations support the idea that the major effect of salts on phase transition of PNIPAM in aqueous solution is produced by anions.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-23392S" target="_blank" >GA13-23392S: Designing and characterization of novel thermosensitive polymer hydrogels</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Macromolecular Symposia
ISBN
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ISSN
1022-1360
e-ISSN
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Number of pages
9
Pages from-to
"Roč. 339"
Publisher name
Wiley
Place of publication
Weinheim
Event location
Prague
Event date
Jul 7, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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