X-ray diffraction and spectroscopic studies of oleic acid–sodium oleate

The effects of Ca(II) and Mg(II) ions on the flotation of spodumene using NaOL

“…The peaks at 1712.90, 1562.21, 1446.64 and 1424.56 cm À1 were attributed to the symmetric vibrations of ACOOA. The peaks at 722.05 and 698.75 cm À1 were determined to be the bending modes associated with oleate adsorbed on the inner surface of spodumene (Fukami et al, 1998;Tandon et al, 2001). The addition of Ca(II) and Mg(II) ions, yielded a new absorption peak at 1631.73 cm À1 in the spectra of spodumene.…”

Organogel formation via supramolecular assembly of oleic acid and sodium oleate

“…The mutual molecular assembly between oleic acid and sodium oleate was expected, since the presence of oleic acid can increase the solubility of sodium oleate in organic solvents, 25,35 the complex formation and the inter-connectivity is likely to be the key factor in the formation of the different structures and the differences in the aggregate size of the crystals. The mutual molecular assembly between oleic acid and sodium oleate was expected, since the presence of oleic acid can increase the solubility of sodium oleate in organic solvents, 25,35 the complex formation and the inter-connectivity is likely to be the key factor in the formation of the different structures and the differences in the aggregate size of the crystals.…”

“…18,19 Overall, there are a limited number of biocompatible components known to structure lipids through the assembly of molecules. [28][29][30][31][32][33][34] Additionally, when no solvent is present, depending on the ratio between the molecules, micelles or lamellar phases are formed. 26 The gelation was explained by the fact that sodium laurate forms bres in organic solvents (alcohols).…”

“…[20][21][22] For example, gel formation was obtained with sodium carboxylates in organic solvents and ionic liquids [23][24][25] and in different alcohols, such as ethanol and decanol, by sodium laurate. 35 However, little is known about the behaviour of these systems in hydrophobic environments. 27 The network formation of laurate salts was strongly inuenced by the type of metal ion that was present.…”

New microcavity substrates for enhancing Raman signals of microscopic samples

“…stretch in cis double bond ν (=C-H)). [16][17][18][19][20][21] The Raman peak positions and tentative vibrational mode assignments [16][17][18][19][20][21] for mustard oil are listed in Table 1. In another experiment, 1µl of 10 -5 molar rhodamine 6G (R6G) in water was placed on the micro-cavity substrate and dried at room temperature similar to drop coating deposition Raman (DCDR) method [22][23][24] in which a micro-volume of solution is deposited on a suitable substrate, followed by solvent evaporation and non-destructive Raman detection.…”