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Interfacial viscoelastic properties of adsorbed surfactant and polymeric films at fluid interfaces
Author(s) -
Mohan V.,
Malviya B. K.,
Wasan D. T.
Publication year - 1976
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450540527
Subject(s) - viscoelasticity , pulmonary surfactant , rheology , materials science , adsorption , polymer , viscometer , aqueous solution , viscosity , viscous liquid , chemical engineering , composite material , chemistry , thermodynamics , organic chemistry , physics , engineering
The viscous and elastic properties of fluid interfaces play an important role in the stability of foams and emulsions as well as in the selection of surfactants for tertiary oil recovery. These properties were determined for aqueous solutions of surfactant, polymer, and polymer plus surfactant systems using a deep channel surface viscometer. The surface rheology of the adsorbed film was represented in terms of the two‐parameter Maxwell model. Depending on the system investigated, the films were found to be either viscoelastic, purely viscous, neither viscous nor elastic, or rigid.