By Karlheinz Hill, Wolfgang von Rybinski, Gerhard Stoll

Alkyl polyglycosides are a brand new iteration of multi-application, ecologically secure nonionic surfactants that shape a certainly reusable source. Written via pioneers within the box, this name info the technological, ecological, physicochemical and function elements of alkyl polyglycosides, and discusses the present patent state of affairs of those new commercially attainable fabrics.

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Additional info for Alkyl Polyglycosides: Technology, Properties, and Applications

Example text

This is a clear difference by comparison with the similarly nonionic fatty alcohol ethoxylates. Since electrolyte solutions are used instead of pure water in many applications, results on the influence of an electrolyte on the interfacial activity of alkyl polyglycosides are also available for a technical C,, APG. Even with extremely large additions of NaCl of more than 20% to the aqueous phase, the plateau value of the interfacial tension against decane remains substantially constant. These results also confirm earlier investigationsconducted by Shinoda et al.

In the extract, alkyl polyglycosides are determined by HPLC or GC methods identical or comparable with those already described. Figure 14 shows the HPLC chromatogram of an alkyl polyglycoside analysis from sewage. Alkyl polyglycoside determination was performed with the aid of a gradient HPLC system using an electrochemical detector to achieve sufficient specificity and sensitivity. Only the peaks of the monoglycosides are clearly Response [ m y Column: Lichrosorb RP-8 Eluent: Acetonitrile/water gradient I Flow: 1 ml/min Detector: Dionex PED Figure 14.

Analytical characterization of main and trace components in alkyl polyglycosides The most important analytical techniques routinely used for the characterization of main and trace components in commercial alkyl polyglycosides are high performance liquid chromatography (HPLC) and gas chromatography (GC). 1 Alkyl polyglycoside determination by GC The GC technique which has proven to be particularly suitable for the analysis of alkyl mono- and oligoglycosides is high temperature gas chromatography (HTGC).

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