SURFACE ROUGHNESS AND FLUID BRIDGE FORMATION OF ULTRATHIN LIQUID FILMS OF PERFLUOROPOLYETHERS ON SOLID SURFACES - EFFECT OF POLAR INTERACTION

摘要

A reptation algorithm applied to a simplified bead-spring off-lallice polymer model an NVT Monte Carlo simulation for perfluoropolyether (PFPE) Z and Zdol (qualitative) has been performed, A bead-bead Lennard-Jones (LJ) potential is used in the bulk, and a substrate-bead LJ potential is added in the ultrathin film condition. In addition, a dipole-dipole polar interaction potential is adopted at the two chain ends of Zdol, Simulation is performed with similar molecular weights of PFPE Z and Zdol.