Oxidation surfactant

In the presence of polyethylene oxide MW 300,000 at a concentration of 0.025 g liter , variations in pH and ionic strength have no effect on elution volumes and a single calibration curve is obtained as shown in Figure 4 and Table II. This behavior presumably also results from modification of the glass surface by the polyethylene oxide surfactant, but in this case charge effects appear to be completely suppressed and the effective pore diameter and volume reduced. Such an interpretation is also in accord with the fact that the elution voliomes are lower with polyethylene oxide than with Tergitol, since Tergitol is a much smaller molecule than the polyethylene oxide. 

D. K. Olsen. Use of amine oxide surfactants for chemical flooding EOR topical report. US DOE Fossil Energy Rep NIPER-417, November 1989. 

From the ESI-FIA-MS(+) spectrum in Fig. 2.5.10(b), the amphoteric amine oxide surfactants ([M]+ ions at m/z 230, 258 and 286) and their dimeric ions ([2M - H]+ at m/z 459 and 487 (230 combined with 258)) could be recognised. The identity of the amine oxides was confirmed by recording product ions of the [M]+ ion at m/z 230 before the parent ion scan of fragment m/z 58 and vice versa was recorded for confirmation. This spectrum contained the A m/z 28 equally spaced characteristic amine oxide homologue ions at m/z 230, 258 and 286. 

This ESI(+) TIC, however, is dominated by strong and broad signals that eluted between 17 and 31 min, neither observable under APCI(+/—) nor ESI(-) conditions. Even under gradient RP-C18 conditions a strong tailing effect was observed while isocratic RP-C18 failed. The information obtained by ESI—LC—MS(+) was that the compounds could be ionised in the form of [M]+ ions at m/z 230, 258 and 286. ESI-LC-MS-MS(+) resulted in product ion spectra which, by means of a MS-MS library, were found to be characteristic for the amphoteric amine oxide surfactants. These compounds not yet observed in household formulations will be presented later on with the RIC of LC separation (cf. Fig. 2.5.11(d)). After identification as amine oxides, the separation and detection of this compound mixture now could be achieved by an isocratic elution using a PLRP-column and methane sulfonic acid and ESI(+) ionisation with the result of sharp signals (RT = 4-6 min) as presented in Fig. 2.5.11(d). 

J.J. Rang, C.A. Miller, H.H. Hoffmann, and C. Thunig Behavior of Hydrocar-bon/Alcohol Drops Injected into Dilute Solutions of an Amine Oxide Surfactant. Ind. Eng. Chem. Res. 35, 3233 (1996). 

Tomah Alkali Surfactant Amphoteric (35% Active) Tomah AO-14-2 Ether amine oxide surfactant... 

We could show that the modification of transition metal alkoxides is a versatile tool to adjust the reactivity of precursors for the needs in lyotropic crystalline templating processes. In case of high surfactant concentrations where the liquid crystalline template is formed prior to the addition of the precursor the use of a modifier may become unnecessary. The synthesis of nanostructured rhenium dioxide and the utilization of MTO as precursor for this purpose clearly shows that in some cases the use of unusual specialized compounds is imperative. First promising results in the synthesis of nanostructured chromium oxide surfactant composites have been displayed although hydrolysis of the precursor seems to be still uncompleted within the nanostructure. The possibility of tailoring the d-values in a desired way besides the synthesis of certain particle morphologies encourages for further work in the future. 

Aromox DMHTD -amine oxide surfactant [SURFACTANTS] (Vol 23)... 

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