Report

Adaptation of Bulk Constitutive Equations to Insoluble Monolayer Collapse at the Air-Water Interface

Science  12 Mar 1999:
Vol. 283, Issue 5408, pp. 1730-1733
DOI: 10.1126/science.283.5408.1730

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Abstract

A constitutive equation based on stress-strain models of bulk solids was adapted to relate the surface pressure, compression rate, and temperature of an insoluble monolayer of monodendrons during collapse at the air-water interface. A power law relation between compression rate and surface pressure and an Arrhenius temperature dependence of the steady-state creep rate were observed in data from compression rate and creep experiments in the collapse region. These relations were combined into a single constitutive equation to calculate the temperature dependence of the collapse pressure with a maximum error of 5 percent for temperatures ranging from 10° to 25°C.

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