Inter-particle forces arising from adsorbed bolaform surfactants in colloidal suspensions

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Abstract

The effects of adsorbed bolaform surfactants, [HOOC(CH2)nCOOH], on the yield stress-pH behaviour of concentrated aqueous ZrO2 suspensions are reported. Both the bolaform concentration and its chain length, n, increase the yield stress. A ten-fold increase in the maximum yield stress, τymax, is recorded for n ≥ 10. The results are explained in terms of a particle bridging model. The increase in τymax reaches a limit at the critical dimer concentration.

Original languageEnglish
Pages (from-to)105-109
Number of pages5
JournalJournal of the Chemical Society - Faraday Transactions
Volume93
Issue number1
DOIs
Publication statusPublished - 7 Jan 1997
Externally publishedYes

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