Adsorption of nonionic and anionic polymers on gamma-alumina and Na-montmorillonite and their mixtures

Authors
Bassmann, F Sequaris, JM Narres, HD Schwuger, MJ
Citation
F. Bassmann et al., Adsorption of nonionic and anionic polymers on gamma-alumina and Na-montmorillonite and their mixtures, J DISP SCI, 20(1-2), 1999, pp. 607-620
Citations number
18
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
ISSN journal
01932691 → ACNP
Volume
20
Issue
1-2
Year of publication
1999
Pages
607 - 620
Database
ISI
SICI code
0193-2691(1999)20:1-2<607:AONAAP>2.0.ZU;2-Y
Abstract
Adsorption isotherms of nonionic polyvinylpyrrolidone (PVP) and anionic ion ized polyacrylic acid (PAA) polymers on single Na-montmorillonite clay and gamma-alumina adsorbents in 0.01M NaCl and pH 5.6 are reported and compared to results obtained with aqueous adsorbent mixtures. Microelectrophoretic behaviours of adsorbents are also observed. It can be shown that antagonistic effects due to interactions between oppos itely charged adsorbent surfaces largely limit the nonionic PVP adsorption.