Salt effects on monolayers and their contribution to surface viscosity

A. K. Chattopadhyay, L. Ghaïcha, S. G. Oh, D. O. Shah

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The surface viscosities of monomolecular films of three homologous series of surfactants, viz. the diethanolamine derivatives of n-alkylsuccinic anhydride (alkyl = dodecyl, tetradecyl, and octadecyl), were measured by deep channel surface viscometry. The studies were carried out with concentrated salt solutions of NaCl and NH4NO3 (0-30 wt%) in the aqueous subphase. The viscosities of the surfactant monolayers increased as the NaCl concentration increased in the aqueous subphase, whereas a reverse trend was observed with NH4NO3 solutions. Such differences in viscosity behavior were mainly due to the changes in the environment of the polar group regions imposed by the nature of the salts.

Original languageEnglish
Pages (from-to)6509-6513
Number of pages5
JournalJournal of Physical Chemistry
Volume96
Issue number15
DOIs
StatePublished - 1992 Jan 1

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Monolayers
diethanolamine
Salts
Viscosity
viscosity
salts
Surface-Active Agents
Surface active agents
surfactants
viscometry
monomolecular films
Anhydrides
Viscosity measurement
anhydrides
Derivatives
trends

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Chattopadhyay, A. K. ; Ghaïcha, L. ; Oh, S. G. ; Shah, D. O. / Salt effects on monolayers and their contribution to surface viscosity. In: Journal of Physical Chemistry. 1992 ; Vol. 96, No. 15. pp. 6509-6513.
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Salt effects on monolayers and their contribution to surface viscosity. / Chattopadhyay, A. K.; Ghaïcha, L.; Oh, S. G.; Shah, D. O.

In: Journal of Physical Chemistry, Vol. 96, No. 15, 01.01.1992, p. 6509-6513.

Research output: Contribution to journalArticle

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