Abstract
ZETTLEMOYER et al.1 have recently reported considerable differences in the rates of adsorption of some isomeric surfactants, for example, sodium octyl α-sulphopelargonate (I), a wetting agent, and sodium methyl α-sulphopalmitate (II), a detergent, to ‘Graphon’. Both 1 and II have the formula RCH(SO3−Na+)COOR′, but differ in the lengths of the chains R and R′. Type I compounds seem to adsorb three–six times faster than type II compounds. The explanations cited are a higher diffusion coefficient (D) or a faster sticking to the ‘Graphon’ surface for I (ref. 1).
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MUKERJEE, P. Rates of Adsorption of Wetting Agents and Detergents. Nature 217, 1046 (1968). https://doi.org/10.1038/2171046a0
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DOI: https://doi.org/10.1038/2171046a0
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