Design, synthesis, and solution behaviour of small polyamines as switchable water additives

15 Feb 2012

Canadian scientists report using polyamine derivatives as switchable water additives to salt out water-miscible organic compounds.

Philip Jessop and colleagues from Queen’s University, Kingston, Ontario and Concordia University, Montréal, Quebec, have developed an efficient system for the removal of water-miscible organic compounds using a recyclable “switchable water” system. The system can be changed from low to high ionic strength by the simple introduction of CO2, and removal of CO2 afterwards restored the solvent system for reuse again.

The team found that alkylammonium bicarbonate salts derived from polyamines were particularly additives as they could provide solutions of greater ionic strength at lower loadings in water, and have developed a set of principles for the design of future switchable water additives.

This article is free to access until the 14th March 2012! Click on the link below to read more…

Design, synthesis, and solution behaviour of small polyamines as switchable water additives, Sean M. Mercer, Tobias Robert, Daniel V. Dixon, Chien-Shun Chen, Zahra Ghoshouni, Jitendra R. Harjani, Soran Jahangiri, Gilles H. Peslherbe and Philip G. Jessop, Green Chem., 2012, DOI: 10.1039/C2GC16240G

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