TEMPERATURE EFFECT ON THE ADSORPTION OF IONIC SURFACTANTS AT WATER/HEXANE INTERFACE FROM MICELLAR SOLUTIONS.

MICHIO YAMANAKA, MAKOTO ARATONO, HIDEMI IYOTA, KINSI MOTOMARA, RYOHEI MATUURA

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

THE ADSORPTION BEHAVIOR OF DODECYLAMMONIUM CHLORIDE (DAC) AND SODIUM DODECYL SULFATE (SDS) AT THEIR AQUEOUS MICELLAR SOLUTION/HEXANE INTERFACE HAS BEEN STUDIED BY MEASURING THE INTERFACIAL TENSION AS A FUNCTION OF TEMPERATURE AT CONCENTRATIONS AROUND THE CRITICAL MICELLE CONCENTRATION (CMC). THE DERIVATIVE OF THE INTERFACIAL TENSION WITH RESPECT TO TEMPERATURE HAS BEEN OBSERVED TO CHANGE ABRUPTLY AT THE CMC AND VERYLITTLE THEREAFTER WITH INCREASING CONCENTRATION IN A LIMITED RANGE ABOVE THE CMC. BY APPLYING THE THERMODYNAMIC TREATMENT OF ADSORPTION FROM MICELLAR SOLUTION DEVELOPED PREVIOUSLYTO EXPERIMENTAL RESULTS, THE ENTROPY CHANGES ASSOCIATED WITH THE ADSORPTION OF DAC AND SDS FROM MONOMERIC STATE AND FROM MICELLAR STATE AND THE CORRESPONDING ENERGY CHANGES ARE CALCULATED.

Original languageEnglish
Pages (from-to)2744-2748
Number of pages5
JournalBULL CHEM SOC JPN
VolumeV 55
Issue numberN 9
DOIs
Publication statusPublished - Jan 1 1982

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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