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Adsorption of polyelectrolyte-nanoparticle systems on silica: Influence of ionic strength
YKI – Ytkemiska institutet.
2002 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 254, p. 222-226Article in journal (Refereed)
Abstract [en]

In this work the effect of ionic strength on the adsorption behavior of cationic polyelectrolyte (acrylamide-acrylamidopropyltrimethylammonium chloride) and negatively charged silica particles has been studied by means of ellipsometry. The adsorption of the polyelectrolyte was observed to increase with increasing salt concentration, a behavior typical for polyelectrolytes with a screening-reduced solvency and a nonelectrostatic affinity for the surface. A similar dependence on the ionic strength was observed when studying the electrolyte effect on the nanoparticle adsorption to the preadsorbed polyelectrolyte film, suggesting that the polyelectrolyte surface conformations largely govern the binding capacity of the particles to the surface

Place, publisher, year, edition, pages
2002. Vol. 254, p. 222-226
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26693OAI: oai:DiVA.org:ri-26693DiVA, id: diva2:1053696
Note
A1597Available from: 2016-12-08 Created: 2016-12-08 Last updated: 2017-11-29Bibliographically approved

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