Molecular interactions behind the synergistic effect in mixed monolayers of 1-octadecanol and ethylene glycol monooctadecyl ether.

Diana N H Tran, Emma L Prime, Michael Plazzer, Andy H M Leung, George Yiapanis, Andrew J Christofferson, Irene Yarovsky, Greg G Qiao, David H Solomon

Department of Chemical and Biomolecular Engineering, University of Melbourne, Parkville, VIC, 3010, Australia.

The journal of physical chemistry. B 2013 Apr 4

filter terms:

Mixed monolayers of 1-octadecanol (C18OH) and ethylene glycol monooctadecyl ether (C18E1) were studied to assess their evaporation suppressing performance. An unexpected increase in performance and stability was found around the 0.5:0.5 bicomponent mixture and has been ascribed to a synergistic effect of the monolayers. Molecular dynamics simulations have attributed this to an additional hydrogen bonding interaction between the monolayer and water, due to the exposed ether oxygen of C18E1 in the mixed system compared to the same ether oxygen in the pure C18E1 system. This interaction is maximized around the 0.5:0.5 ratio due to the particular interfacial geometry associated with this mixture.

Citation

Diana N H Tran, Emma L Prime, Michael Plazzer, Andy H M Leung, George Yiapanis, Andrew J Christofferson, Irene Yarovsky, Greg G Qiao, David H Solomon. Molecular interactions behind the synergistic effect in mixed monolayers of 1-octadecanol and ethylene glycol monooctadecyl ether. The journal of physical chemistry. B. 2013 Apr 4;117(13):3603-12