A Graphical Method for Predicting Surfactant and Protein Adsorption Properties

Erwin A. Vogler, David A. Martin, David B. Montgomery, Jane Graper, Harry W. Sugg

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Theory and practice of a new method of correlating surface energetics (wettability) with surfactant and protein adsorption properties from aqueous solution are introduced. The method quantified adsorption through an index comprised of solid-liquid interfacial tensions measured by contact-angle goniometry. This adsorption index was shown to have nomographic utility when plotted against surface wettability. The resulting graphical construction, termed an adsorption map, had physical boundaries that restricted index data to regions defining interfacial excess (adsorption) or depletion, allowing straightforward prediction of the surface wettability required to enhance or defeat adsorption. Adsorption mapping was shown to be applicable to both single- and multiple-component solutions of known or unknown chemical composition. Theoretical predictions were tested against results obtained with nonionic, anionic, and cationic surfactants of known chemical composition that exhibited different mechanisms of adsorption. Glass coverslips with or without a hydrophobic silane coating and oxidized polystyrene plaques served as test substrata. Adsorption mapping results were corroborated by the surface thermodynamic method of measuring adsorption by concentration-dependent contact angles. The surface spectroscopies ESCA and SSIMS were applied to obtain direct chemical evidence of strongly-adsorbed cationic surfactant to oxidized surfaces to provide additional confirmation of adsorption mapping results. A simple mathematical model of adsorption was presented that allowed interpretation of linear-like trends observed in the mapping of surfactants, purified proteins (human serum albumin and bovine γ-globulin), and heterogenous mixtures of blood proteins (fetal bovine serum and porcine plasma).

Original languageEnglish (US)
Pages (from-to)497-507
Number of pages11
JournalLangmuir
Volume9
Issue number2
DOIs
StatePublished - Jan 1 1993

Fingerprint

Surface-Active Agents
Surface active agents
surfactants
proteins
Proteins
Adsorption
adsorption
wettability
Wetting
Cationic surfactants
serums
Contact angle
chemical composition
globulins
Silanes
Anionic surfactants
Polystyrenes
Nonionic surfactants
Globulins
Bovine Serum Albumin

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Vogler, E. A., Martin, D. A., Montgomery, D. B., Graper, J., & Sugg, H. W. (1993). A Graphical Method for Predicting Surfactant and Protein Adsorption Properties. Langmuir, 9(2), 497-507. https://doi.org/10.1021/la00026a023
Vogler, Erwin A. ; Martin, David A. ; Montgomery, David B. ; Graper, Jane ; Sugg, Harry W. / A Graphical Method for Predicting Surfactant and Protein Adsorption Properties. In: Langmuir. 1993 ; Vol. 9, No. 2. pp. 497-507.
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Vogler, EA, Martin, DA, Montgomery, DB, Graper, J & Sugg, HW 1993, 'A Graphical Method for Predicting Surfactant and Protein Adsorption Properties', Langmuir, vol. 9, no. 2, pp. 497-507. https://doi.org/10.1021/la00026a023

A Graphical Method for Predicting Surfactant and Protein Adsorption Properties. / Vogler, Erwin A.; Martin, David A.; Montgomery, David B.; Graper, Jane; Sugg, Harry W.

In: Langmuir, Vol. 9, No. 2, 01.01.1993, p. 497-507.

Research output: Contribution to journalArticle

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Vogler EA, Martin DA, Montgomery DB, Graper J, Sugg HW. A Graphical Method for Predicting Surfactant and Protein Adsorption Properties. Langmuir. 1993 Jan 1;9(2):497-507. https://doi.org/10.1021/la00026a023