Interfacial properties of bottle-brush polyelectrolytes

QC 20100525
This article is focused on interfacial properties of bottle brush polyelectrolytes, where side-chains are attached along a polymer backbone. This class of polymer has been much less studied than block copolymers, which is particularly true for bottle brush polyelectrolytes with a high graft density. We have explored how the graft density and charge density of such polymers affect surface properties, as well as some bulk properties. The adsorption of this class of polymer onto negatively charged silica and mica surfaces has been determined. On mica adsorption is driven by electrostatic forces whereas on silica both electrostatic forces and interactions between silica and ethylene oxide chains drive the adsorption. On silica the adsorbed amount is very sensitive to solution ionic strength and pH. We also report on surface interactions and frictional forces obtained between surfaces coated with bottle brush polyelectrolytes.

Ingår i:PROCEEDINGS OF BALTIC POLYMER SYMPOSIUM 2007Vilnius : VILNIUS UNIV., s. 77-819789955331506

Av författaren/redakt...: Claesson, Per M.; Naderi, A.; Iruthayaraj, J.; Pettersson, Torb ...; Vareikis, A.; Makuska, R.

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