“Elasticity Index” for the Connecting Groups of Double-Chain Amphiphiles Bearing Two Hydrophilic Groups

Abstract

Abstract The surface pressure-area (π-A) isotherms for a series of double-chain diols derived from diepoxides were measured. A new parameter, “Elasticity Index”, is proposed to explain the effect of the connecting group between the two lipophilic chains of double-chain amphiphiles on the behavior of their monolayer films at the air-water interface.