Bi-Layer Formation of Imidazole- Modified Ethyl(HydroxyEthyl)Cellulose at a Hydrophobic Surface as monitored by QCM-D
Journal article, 2009

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.

QCM-D

Imidazole

EHEC

Bi-layer

Cellulose derivative

Author

Jesper Hedin

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Dan Isaksson

Chalmers

Markus Andersson

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Magnus Nydén

SuMo Biomaterials

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Journal of Colloid and Interface Science

0021-9797 (ISSN) 1095-7103 (eISSN)

Vol. 336 2 388-392

Subject Categories

Chemical Engineering

DOI

10.1016/j.jcis.2009.04.033

More information

Latest update

8/18/2020