ADSORPTION OF RHODAMINE-60 ONTO POLYSTYRENE LATEX-PARTICLES WITH SULFATE GROUPS AT THE SURFACE

Authors
CHARREYRE MT ZHANG P WINNIK MA PICHOT C GRAILLAT C
Citation
Mt. Charreyre et al., ADSORPTION OF RHODAMINE-60 ONTO POLYSTYRENE LATEX-PARTICLES WITH SULFATE GROUPS AT THE SURFACE, Journal of colloid and interface science, 170(2), 1995, pp. 374-382
Citations number
26
Categorie Soggetti
Chemistry Physical
Journal title
Journal of colloid and interface science → ACNP
ISSN journal
00219797
Volume
170
Issue
2
Year of publication
1995
Pages
374 - 382
Database
ISI
SICI code
0021-9797(1995)170:2<374:AOROPL>2.0.ZU;2-5
Abstract
The adsorption behavior of a fluorescent dye, rhodamine 6G (R6G), onto three anionic polystyrene latex samples of different charge densities has been investigated as a function of the pH and the ionic strength of the aqueous medium, The data fit well to a simple Langmuir binding isotherm, but not to a cooperative binding model. The results show tha t at low dye concentration adsorption depends mostly on electrostatic interactions, whereas at high concentration hydrophobic interactions p revail. (C) 1995 Academic Press, Inc.