Bi-Layer Formation of Imidazole- Modified Ethyl(HydroxyEthyl)Cellulose at a Hydrophobic Surface as monitored by QCM-D
Artikel i vetenskaplig tidskrift, 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.

EHEC

Imidazole

Bi-layer

Cellulose derivative

QCM-D

Författare

Jesper Hedin

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Dan Isaksson

Chalmers University of Technology

Markus Andersson Trojer

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Magnus Nydén

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

SuMo Biomaterials

Journal of Colloid and Interface Science

0021-9797 (ISSN)

Vol. 336 388-392

Ämneskategorier

Kemiteknik

DOI

10.1016/j.jcis.2009.04.033