NMR Methods to Study Effects of Additives on Phase Separation of Thermoresponsive Polymer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10286302" target="_blank" >RIV/00216208:11320/14:10286302 - 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>

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 (sodiumn-dodecyl sulfate, SDS) and three inorganicsalts (NaCl, Na2SO4, Na3PO4) on the phase transition of poly(Nisopropylacrylamide) (PNIPAM) in aqueous solution. The molecular interactions between SDS and PNIPAM during the coil-to-globule transition of PNIPAM have been accurately observed through 2D NOESY 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 aqueous solution 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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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GA13-23392S" target="_blank" >GA13-23392S: Designing and characterization of novel thermosensitive polymer hydrogels</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Macromolecular Symposia

ISSN

1022-1360

e-ISSN

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Volume of the periodical

339

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

24-32

UT code for WoS article

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EID of the result in the Scopus database

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