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

Filippov, Sergey K.; Seery, T. A. P.; Kříž, Jaroslav; Hrubý, Martin; Černoch, Peter; Sedláček, Ondřej; Kadlec, Petr; Pánek, Jiří; Štěpánek, Petr

doi:https://dx.doi.org/10.1002/pi.4410

Number of the records: 1

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

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SYSNO ASEP	0394493
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Collective polyelectrolyte diffusion as a function of counterion size and dielectric constant
Author(s)	Filippov, Sergey K. (UMCH-V)_{RID, ORCID, SAI} Seery, T. A. P. (US) Kříž, Jaroslav (UMCH-V)_RID Hrubý, Martin (UMCH-V)_{RID, ORCID} Černoch, Peter (UMCH-V)_{RID, ORCID} Sedláček, Ondřej (UMCH-V)_{RID, ORCID} Kadlec, Petr (UMCH-V)_{RID, ORCID} Pánek, Jiří (UMCH-V)_{RID, ORCID} Štěpánek, Petr (UMCH-V)_{RID, ORCID}
Source Title	Polymer International. - : Wiley - ISSN 0959-8103 Roč. 62, č. 9 (2013), s. 1271-1276
Number of pages	6 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	polyelectrolyte ; counterion binding ; sodium polystyrene sulfonate
Subject RIV	CF - Physical ; Theoretical Chemistry
R&D Projects	ME09059 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z40500505 - UMCH-V (2005-2011)
UT WOS	000322580300002
DOI	10.1002/pi.4410
Annotation	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.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2014

Number of the records: 1