Determining surfactant CMC in electrolyte solutions by ultrasound velocimetry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F10%3APU94241" target="_blank" >RIV/00216305:26310/10:PU94241 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Determining surfactant CMC in electrolyte solutions by ultrasound velocimetry
Original language description
High resolution ultrasound spectroscopy is a versatile tool in colloid chemistry that has started to be available also commercially several years ago. Among other, it can be used to determine the critical micellar concentration and compressibility of surfactant molecules or micelles which in turn can be used to elucidate their hydration, structure and intermolecular interactions. Concentration increment of ultrasound velocity, i.e. the change of ultrasound velocity in the solution relatively to the puresolvent per unit solute concentration, plays an important role in evaluation of ultrasonic data from such studies. We have found, however, that its use in surfactant solutions containing electrolytes can be problematic and can even lead to overlooking the point of micellization. This is due to much lower critical micellar concentration in the presence of electrolytes and, consequently, smaller changes in ultrasound velocity. Because the increment includes the reciprocal surfactant conce
Czech name
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Czech description
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Project
<a href="/en/project/OC08004" target="_blank" >OC08004: Self-assembling colloids hyaluronan-surfactant, hyaluronan-amino acid for nanomedical applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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