Search results for " cosmetic detergents"

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Green Synthesis, Molecular Characterization and Associative Behavior of Some Gemini Surfactants without a Spacer Group.

2013

A series of new gemini surfactants without a spacer group, disodium 2,3-dialkyl-1,2,3,4-butanetetracarboxylates, were synthesized in a green chemistry context minimizing the use of organic solvents and applying microwaves (MW) when activation energy was required. Once the desired architecture was confirmed by means of the nuclear magnetic resonance technique (1H-NMR, 1H-1H COSY) for all the studied surfactants, the critical micellization concentration was determined by conductance measurements. The diffusion coefficient of micelles formed by the four compounds was characterized using pulsed field gradient (PFG)-NMR. Diffusion coefficients were found to be dependent on the concentration and …

Green chemistrygemini surfactantsmicrowavecritical micelle concentrationDiffusionContext (language use)cosmetic detergentlcsh:TechnologyMicelleArticlegreen synthesigemini surfactants green synthesis microwave cosmetic detergents critical micelle concentration PFG-NMR diffusion coefficientOrganic chemistryMoleculeGeneral Materials Sciencediffusion coefficientlcsh:MicroscopyAlkyllcsh:QC120-168.85Settore CHIM/02 - Chimica Fisicachemistry.chemical_classificationgemini surfactantcosmetic detergentslcsh:QH201-278.5lcsh:TChemistrygreen synthesisChemical engineeringlcsh:TA1-2040Critical micelle concentrationPFG-NMRlcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringlcsh:Engineering (General). Civil engineering (General)Pulsed field gradientlcsh:TK1-9971gemini surfactants; green synthesis; microwave; cosmetic detergents; critical micelle concentration; PFG-NMR; diffusion coefficientMaterials (Basel, Switzerland)
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