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A constitutive equation for a viscoelastic interface
Author(s) -
Gardner J. W.,
Addison J. V.,
Schechter R. S.
Publication year - 1978
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690240303
Subject(s) - viscoelasticity , rheology , constitutive equation , surface tension , rheometer , materials science , interface (matter) , surface (topology) , composite material , mechanics , thermodynamics , gibbs isotherm , physics , geometry , mathematics , finite element method
A constitutive equation has been developed to relate surface stresses to the deformational history of an interface. This equation is designed to provide a unified description of complex interfacial rheological phenomena. New and as yet unreported behavior such as surface normal stresses and viscoelastic contributions to the dynamic surface tension are predicted. A monolayer of poly(vinyl alcohol) adsorbed at an air/water interface has been studied using a deep channel surface rheometer and the observed viscoelastic behavior shown to be fitted by the model.