Abstract
We investigate the effect of system properties and adsorption sequence on competitive adsorption of poly(methyl methacrylate) (PMMA) and polystyrene (PS) on narrowly polydispersed cobalt (Co) nanoparticles (D ∼ 27 nm). The adsorbed layer composition is studied using thermo-gravimetric analysis (TGA). We find that adsorbed layers of PS are completely displaced by PMMA when the solvent is a common good solvent. An adsorbed layer of only PMMA is also obtained through competitive adsorption from a common good solvent. However, in a selective solvent that is poor for PS, sequential adsorption leads to the formation of mixed layers.
| Original language | English |
|---|---|
| Pages (from-to) | 1781-1788 |
| Number of pages | 8 |
| Journal | Surface Science |
| Volume | 601 |
| Issue number | 8 |
| DOIs | |
| State | Published - Apr 15 2007 |
Keywords
- Competitive adsorption
- Diblock co-polymers
- Metal nanoparticles
- Polymer adsorption
- Thermal properties
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