Forces between Mica Surfaces in CaC12 Solutions Introduction The

Langmuir 1992,8,740-743

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Forces between Mica Surfaces in CaC12 Solutions Dave E. Dunstant

Department of Chemical and Nuclear Engineering, University of California, Santa Barbara, Santa Barbara, California 93101 Received April 9,1991. In Final Form: November 4,1991

Introduction The surface forces apparatus, SFA, has been widely used to measure forces between mica surfaces in various electrolyte solutions.lr2 Repulsive forces, above and beyond those predicted by DLVO theory, have been measured at short range (