for Wood et al., and B = -0.847 nm 2 for Studt. A negative B value is expected due to the attractive nature of the interactions. The values obtained to fit the experimental data are similar in magnitude to those obtained previously for C 10 E 4 polyethylene glycol surfactants at the air-water interface. The accurate determination of lateral interactions for the OFMs studied here will be the focus of future MD simulations. This will likely require the use of a smaller hydrocarbon solvent to accelerate convergence and modification of the colvar to accelerate the exploration of the different degrees of freedom, such as the tailgroup positions with respect to the headroups.