Citation: Iram Bibi, Mohammad Siddiq. GRAFTING OF POLY(SODIUM STYRENESULFONATE) ONTO GOLD SURFACE FROM NaNO3 SOLUTION[J]. Chinese Journal of Polymer Science, ;2011, 29(5): 575-579. doi: 10.1007/s10118-011-1065-3 shu

GRAFTING OF POLY(SODIUM STYRENESULFONATE) ONTO GOLD SURFACE FROM NaNO3 SOLUTION

Received Date: 8 September 2010
Revised Date: 8 October 2010

Fund Project: This work was financially supported by the Higher Education Commission (HEC) of Pakistan under the indigenous PhD scholarship program.

The chemical grafting of thiol terminated poly(sodium styrenesulfonate) (HS-PSSS) chains from sodium nitrate (NaNO3) salt solution to a gold surface was investigated with a quartz crystal microbalance with dissipation monitoring (QCM-D) in different salt concentrations. It was found that at low salt concentration grafting density of HS-PSSS was low and the grafted chains adopted a mushroom conformation. With the increase of salt concentration polyelectrolyte chains underwent a transition toward coiled state due to reduction of electrostatic repulsion and as a result more chains were grafted on the surface. When the grafting density reached a certain limit after which further grafting caused repulsion between already grafted HS-PSSS chains and as a result grafted chains adopted a brush conformation.
- Poly(sodium styrenesulfonate)
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