Naslov
SLS Study of Interactions between Poly(Styrenesulphonate) with Monovalent and Divalent Cations

Autori
Požar, Josip ; Roberts, Dorota ; Curtis, Robin ; Kovačević, Davor

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
23rd Conference of the European Colloid and Interface Society : Book of Abstracts / - , 2009

Skup
23rd Conference of the European Colloid and Interface Society

Mjesto i datum
Antalya, Turska, 06.09.2009. - 11.09.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
SLS ; Poly(Styrenesulphonate) ; Cations

Sažetak
Despite numerous theoretical studies on the influence of ionic conditions (ionic strength, type of electrolyte used) on polyelectrolyte charge, shape and counterion–polyelectrolyte interactions, there is still a significant lack of experimental results on the subject [1]. In order to clarify the influence of added salt on polyelectrolyte chains, static light scattering (SLS) experiments on aqueous sodium poly(styrenesulphonate) solutions containing different supporting electrolytes (LiCl, NaCl, CsNO3, Et4NCl, MgCl2, SrCl2) were performed. The results of measurements strongly suggest the existence of specific ionic effects. A pronounced dependence of second virial coefficient (A2) on size and charge density of the supporting salt cation following the lyotropic series was noticed. Significant difference in A2 coefficients for polyelectrolyte solutions containing monovalent cations with respect to polyelectrolyte solutions containing divalent cations at the same ionic strength was observed. A pronounced reduction in second virial coefficients of polymer solution upon increase of ionic strength was noticed.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA