Abstract
A sample containing 20 wt % of the nonionic surfactant tetraethylene glycol dodecyl ether (C{sub 12}E{sub 4}), specifically deuterated in the {alpha}-position, was investigated with {sup 2}H NMR relaxation in H{sub 2}O. From the frequency dependence of the longitudinal relaxation rate in the Larmor frequency range 2-55 MHz, it was concluded that the solution contains rodlike micelles. A slow motion in the microsecond time scale, as determined from the transverse relaxation rate, was interpreted taking the flexibility of the rodlike micelles explicitly into account.
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