Switchable viscosity triggered by CO2 using smart worm-like micelles

Xin Su; Michael F. Cunningham; Philip G. Jessop

doi:10.1039/C3CC37816K

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Chemical Communications

Issue 26, 2013

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Switchable viscosity triggered by CO₂ using smart worm-like micelles

Xin Su,^a Michael F. Cunningham*^a^b and Philip G. Jessop*^a

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Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Canada
E-mail: jessop@chem.queensu.ca ;
Fax: +1-613-533-6669 ;
Tel: +1-613-533-3212

Department of Chemical Engineering, Queen’s University, 19 Division Street, Kingston, Canada
E-mail: michael.cunningham@chee.queensu.ca ;
Fax: +1-613-533-6637 ;
Tel: +1-613-533-2782

Chem. Commun., 2013,49, 2655-2657

DOI: 10.1039/C3CC37816K
Received 28 Oct 2012, Accepted 12 Feb 2013
First published online 12 Feb 2013

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Abstract
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We report two CO₂-responsive aqueous solutions having switchable viscosity. The solution of sodium octadecyl sulfate and 2-(dimethylamino)ethanol forms viscoelastic worm-like micelles in the presence of CO₂ but not in its absence at 60 °C. Another solution of sodium stearate and sodium nitrate has high viscosity only if CO₂ is absent.

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