Physical Chemistry Chemical Physics

Characterising the phase behaviour of stearic acid and its triethanolamine soap and acid–soap by infrared spectroscopy

PDA Pudney, KJ Mutch, S Zhu

Index: Pudney, Paul D. A.; Mutch, Kevin J.; Zhu, Shiping Physical Chemistry Chemical Physics, 2009 , vol. 11, # 25 p. 5010 - 5018

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Citation Number: 10

Abstract

The behaviour of stearic acid neutralised by triethanolamine to form soap and its acid–soap has been examined by infrared spectroscopy. It was found that not only could the neutralisation behaviour be characterised, but the thermotropic behaviour could also be followed. The neutralisation confirmed the formation of a fixed stoichiometeric ratio, 2: 1, acid– soap. When following the thermotropic behaviour the break up of the acid–soap could be ...