Abstract
We investigate a wetting reversal transition in thin films of two-phase mixtures of poly(ethylene-propylene) (PEP) and its deuterated analog (dPEP) on substrates covered by self-assembled monolayers (SAM) whose surface energy, , is tuned by varying the SAM composition. As increases from 21 to , a transition from a dPEP/PEP/dPEP/SAM to a dPEP/PEP/SAM structure occurs at increasing , where and are the critical and transition temperatures, respectively. The dependence of on is predicted by a simple model from surface and interfacial energies of PEP/dPEP.
- Received 10 March 1997
DOI:https://doi.org/10.1103/PhysRevLett.78.4946
©1997 American Physical Society