Bi-layer formation of imidazole-modified ethyl(hydroxyethyl)cellulose at a hydrophobic surface as monitored by QCM-D

Jesper Hedin; Dan Isaksson; Markus Andersson; Magnus Nydén

doi:10.1016/j.jcis.2009.04.033

Bi-layer formation of imidazole-modified ethyl(hydroxyethyl)cellulose at a hydrophobic surface as monitored by QCM-D

Jesper Hedin^*, Dan Isaksson, Markus Andersson, Magnus Nydén

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

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
Pages (from-to)	388-392
Number of pages	5
Journal	Journal of Colloid and Interface Science
Volume	336
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2009.04.033
Publication status	Published - 15 Aug 2009
Externally published	Yes

Keywords

EHEC
Imidazole
QCM-D
Bi-layer
Cellulose derivative

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10.1016/j.jcis.2009.04.033

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title = "Bi-layer formation of imidazole-modified ethyl(hydroxyethyl)cellulose at a hydrophobic surface as monitored by QCM-D",

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.",

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AU - Hedin, Jesper

AU - Isaksson, Dan

AU - Andersson, Markus

AU - Nydén, Magnus

PY - 2009/8/15

Y1 - 2009/8/15

N2 - 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.

AB - 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.

KW - EHEC

KW - Imidazole

KW - QCM-D

KW - Bi-layer

KW - Cellulose derivative

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Bi-layer formation of imidazole-modified ethyl(hydroxyethyl)cellulose at a hydrophobic surface as monitored by QCM-D

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Keywords

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