Effect of anionic surfactants on crystal growth of calcium hydrogen phosphate dihydrate

M. Bujan*, M. Sikirić, N. Filipović-Vinceković, N. Vdović, N. Garti, H. Füredi-Milhofer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

The effect of anionic surfactants (single-chained sodium n-dodecyl sulfate (SDS), asymmetric double-chained sodium bis(2-ethylhexyl) sulfosuccinate (AOT), and two-headed disodium oleoamido PEG-2 sulfosuccinate) on the crystallization process of calcium hydrogen phosphate dihydrate (DCPD) was investigated. All surfactants, depending on the type and actual concentration, showed inhibitory effects on the overall crystallization process. Below the critical micelle concentration (cmc), electrostatic adsorption of surfactant anions on lateral crystal faces inhibited crystal growth and changed crystal morphology. Above the cmc, SDS and AOT caused phase changes; that is, a mixture of DCPD and octacalcium phosphate was formed.

Original languageEnglish
Pages (from-to)6461-6470
Number of pages10
JournalLangmuir
Volume17
Issue number21
DOIs
StatePublished - 16 Oct 2001

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