Use of a Dynamic Light Scattering Technique for SDS/Water/Pentanol Studies |
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| Authors: | Jolanta Cie?la Andrzej Bieganowski Jolanta Narkiewicz-Micha?ek Marta Szymula |
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| Institution: | 1. Institute of Agrophysics Polish Academy of Sciences , Lublin , Poland j.ciesla@ipan.lublin.pl;3. Institute of Agrophysics Polish Academy of Sciences , Lublin , Poland;4. Maria Curie-Sk?odowska University in Lublin, Faculty of Chemistry , Lublin , Poland |
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| Abstract: | The interpretation of micelle/aggregate size obtained by use of the DLS technique for SDS/water/pentanol systems was discussed by comparison of the results of measurement with theoretical data. For most of the studied systems, the apparent radii (R h,app ) did not satisfactorily characterize the size of the aggregates (R h,app < 1 nm). The use of a correction factor (f = 0.26) confirmed that the discrepancies were associated with the electrostatic intermicellar interactions. However, the fuzzy optical interface between dispersed and dispersing phases can also be the reason of such results. An increase of pentanol content caused a decrease of the droplet radius in w/o systems but in o/w systems the changes were negligible. |
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| Keywords: | Dynamic light scattering micelles microemulsions SDS/water/pentanol |
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