Abstract
The adsorption behaviour of ethyl(hydroxyethyl)cellulose chemically modified with imidazole (Im-EHEC) at hydrophobic surfaces has been studied with QCM-D. The very slow adsorption isotherm was due to a continuous polymer film reconfiguration and exchange of different sized polymers. The thickness of the film was about 30 nm. The polymers adsorbed Cu2+ ions into the film from a CuCl2 solution and a bi-layer was formed when Im-EHEC was added a second time. The second polymer film was only 7 nm thick but highly viscoelastic. After rinsing with water the metal ions was flushed away and the second Im-EHEC layer was released. The imidazole modification of EHEC enables interaction with transition metal ions and opens up for new applications for cellulose based materials.
Original language | English |
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Pages (from-to) | 388-392 |
Number of pages | 5 |
Journal | Journal of Colloid and Interface Science |
Volume | 336 |
Issue number | 2 |
DOIs | |
Publication status | Published - 15 Aug 2009 |
Externally published | Yes |
Keywords
- EHEC
- Imidazole
- QCM-D
- Bi-layer
- Cellulose derivative