Molecular Interactions behind the Synergistic Effect in Mixed Mono layers of 1-Octadecanol and Ethylene Glycol Monooctadecyl Ether
Diana NH Tran, Emma L Prime, Michael Plazzer, Andy HM Leung, George Yiapanis, Andrew J Christofferson, Irene Yarovsky, Greg G Qiao, David H Solomon
JOURNAL OF PHYSICAL CHEMISTRY B | AMER CHEMICAL SOC | Published : 2013
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..View full abstract
Awarded by Australian Research Council
The financial support of The Cooperative Research Centre for Polymers (CRC-P) and the Australian Research Council Discovery grant DP110101604 is gratefully acknowledged. High performance computing resources granted through the merit allocation scheme by the National Computational Infrastructure (NCI) facility, Victorian Partnership for Advanced Computing (VPAC), IVEC and the Victorian Life Sciences Computational Infrastructure (VLSCI) provided by the Australian Government are also gratefully acknowledged.