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

Jesper Hedin (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; Dan Isaksson ; Markus Andersson (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; Magnus Nydén (SuMo Biomaterials ; Institutionen för kemi- och bioteknik, Teknisk ytkemi)
Journal of Colloid and Interface Science (0021-9797). Vol. 336 (2009), 2, p. 388-392.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Bi-layer; Cellulose derivative; EHEC; Imidazole; QCM-D



Denna post skapades 2010-01-18. Senast ändrad 2016-07-18.
CPL Pubid: 108413

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)
SuMo Biomaterials

Ämnesområden

Kemiteknik

Chalmers infrastruktur

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