| 1. |
- Claesson, Per M., et al.
(author)
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Interfacial properties of bottle-brush polyelectrolytes
- 2007
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In: PROCEEDINGS OF BALTIC POLYMER SYMPOSIUM 2007. - Vilnius : VILNIUS UNIV.. - 9789955331506 ; , s. 77-81
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Conference paper (peer-reviewed)abstract
- 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.
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| 2. |
- Dedinaite, Andra, et al.
(author)
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Solution properties of bottle-brush polyelectrolytes
- 2007
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In: PROCEEDINGS OF BALTIC POLYMER SYMPOSIUM 2007. - 9789955331506 ; , s. 112-116
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Conference paper (peer-reviewed)abstract
- Aqueous solution properties of bottle brush polyelectrolytes, where side-chains are attached to a polymer backbone, have been studied. The side chains consist of 45 units long poly(ethylene oxide) groups and the backbone is of the methacrylate type. Small-angle X-ray scattering (SAXS) was used to elucidate the solution conformation of this class of polymer and how it is affected by the side chain density and charge density. The effect of temperature on the solution conformation, and in particular the side chain extension, has also been quantified. At higher concentrations the interactions between the polymer chains in solution affects the scattering, and it is shown that this interaction is well described by a model originally developed for wormlike micelles.
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