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Surface forces between adsorbed polyelectrolytes in salt solution
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
1993 (English)In: Progress in Colloid and Polymer Science, ISSN 0340-255X, E-ISSN 1437-8027, Vol. 93, 206-208 p.Article in journal (Refereed)
Abstract [en]

Highly charged cationic polyelectrolyte was adsorbed onto mica from 10-4 M KBr and 10-4 M K2SO4 solutions. The results show that the structure of the adsorbed layer and the total amount adsorbed is dependent on the anion valency. Both the layer thickness and the adsorbed amount increase when the salt anion is of higher valency. Desorption over several days into 10-4 M K2SO4 solution was followed. This indicates the adsorbed layer initially overcompensates the mica lattice charge. After some time, the sign of the charge is re-reversed, due to desorption. Adhesion between the adsorbed layers increase during the desorption process. This adhesion is attributed to bridging of entropic origin.

Place, publisher, year, edition, pages
1993. Vol. 93, 206-208 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27415OAI: oai:DiVA.org:ri-27415DiVA: diva2:1054419
Note
A803Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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