Collective polyelectrolyte diffusion as a function of counterion size and dielectric constant

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F13%3A00394493" target="_blank" >RIV/61389013:_____/13:00394493 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/pi.4410" target="_blank" >http://dx.doi.org/10.1002/pi.4410</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pi.4410" target="_blank" >10.1002/pi.4410</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Collective polyelectrolyte diffusion as a function of counterion size and dielectric constant

Popis výsledku v původním jazyce

We report studies of the effect of counterions on the properties of solutions of a strong polyelectrolyte for a wide range of solvent dielectric constant. For this purpose we investigated the dynamic properties of polystyrene sulfonate in N-methylformamide whose dielectric constant changes significantly with temperature. By means of dynamic light scattering and NMR spectroscopy, polymers of different molecular weights and various counterions were investigated, including large phosphazene counterions P1,P2 and P4 measured for the first time. It was found that the order of counterion binding of ionomers in the solvent changed with an increase of dielectric constant. The order for low dielectric constant (high temperature) was Na < Rb < Cs < P1 < P2 < P4, whereas for a solvent with high dielectric constant no influence of counterion nature was observed. The solvation?desolvation effect together with electrostatic interactions are responsible for the observed phenomenon.

Název v anglickém jazyce

Collective polyelectrolyte diffusion as a function of counterion size and dielectric constant

Popis výsledku anglicky

We report studies of the effect of counterions on the properties of solutions of a strong polyelectrolyte for a wide range of solvent dielectric constant. For this purpose we investigated the dynamic properties of polystyrene sulfonate in N-methylformamide whose dielectric constant changes significantly with temperature. By means of dynamic light scattering and NMR spectroscopy, polymers of different molecular weights and various counterions were investigated, including large phosphazene counterions P1,P2 and P4 measured for the first time. It was found that the order of counterion binding of ionomers in the solvent changed with an increase of dielectric constant. The order for low dielectric constant (high temperature) was Na < Rb < Cs < P1 < P2 < P4, whereas for a solvent with high dielectric constant no influence of counterion nature was observed. The solvation?desolvation effect together with electrostatic interactions are responsible for the observed phenomenon.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/ME09059" target="_blank" >ME09059: Vlastnosti polyelektrolytů v roztocích s široce proměnnou dielektrickou konstantou</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Polymer International

ISSN

0959-8103

e-ISSN

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Svazek periodika

62

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

1271-1276

Kód UT WoS článku

000322580300002

EID výsledku v databázi Scopus

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