Light scattering study of sodium 2 ,6-di-n-alkylnaphthalene-1-sulfonates

Heilweil, Israel J.

doi:10.1016/0095-8522(64)90022-4

Cited by 23 publications

(3 citation statements)

References 18 publications

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“…There are a variety of methods used for investigating the nature of reversed micelles, e.g., NMR (3)-(5), vapor pressure osmometry (6), static and dynamic light scattering ( 7), (8), fluorescence depolarization ( 9 ) , etc. Infrared spectroscopy is a sensitive method for the detection of the interactions between surfactants or between surfactants and solvents.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Concentration, Solvent, and Temperature on Aggregation of a Commercial Calcium Sulfonate Additive as Studied by FTIR and Light Scattering Techniques

Sun

Hsu

1997

Tribology Transactions

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The aggregation of a calcium sulfonate in organic solvents was studied by the Fourier Transfom Znfrared (FTIR) spectroscopy and dynamic light scattering techniques. The symmetric stretching band of the S= 0 bond was found to be sensitive to the concentration of the additive and to the polarity of the solvent. A critical micelle concentration (CMC) may exist in the concentration range of 0.04-0.11 millimole/liter. As the solvent polarity increased, the width in half height of the symmetric stretching band of S= 0 increased, and the interaction between the solvent and the polar head of calcium s u b nate increased accordingly. This interaction weakened the interaction between the polar heads themselves, and thereby the size of the micelle decreased as found by dynamic light scattering. When the polarity of a solvent is strong enough, e.g., in heptanoic acid or water, the micelles f m d may revert back to nonnal micelles. The FTIR spectra and aggregation size of calcium sulfonate in hexadecane showed that higher temperatures decreased the width in half height of the asymmetric stretching bands and concurrently decreased the size of the aggregation.

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Section: Introductionmentioning

confidence: 99%

The Effect of Concentration, Solvent, and Temperature on Aggregation of a Commercial Calcium Sulfonate Additive as Studied by FTIR and Light Scattering Techniques

Sun

Hsu

1997

Tribology Transactions

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“…The microstructure of the core has already been studied by électron diffraction and more accurately by Extended X-ray Absorption Fine Structure (EXAFS) at the calcium K-edge [1]. The morphology of such systems can be determined by light scattering [2], small angle X-ray scattering [3] and neutron scattering experiments [4].…”

Section: Etc)mentioning

confidence: 99%

High resolution electron spectroscopic imaging (ESI) of reverse micelles

Martin

Mansot

Hallouis

et al. 1990

Microsc. Microanal. Microstruct.

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“…Obtenu 0,84 g de produit Vc de F. 138-139' (substance B ) .RMN. (CDCI,): 6 1,42, 3 pr., d , JHC(2),H3C(9) 6,O H,C(9); 8 1,2, 15 pr.,S, C,,H,,O1, (416,37) Calc. C 51,92 H 5,81% …”

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Recherches dans la série des cyclitols XLV. Action des diazoalcanes sur la pentahydroxy‐2,4,6/3,5‐cyclohexanone et sur son dérivé penta‐O‐acétylé. I. Etude des spiro‐époxydes

Giddey

Cocu

Pochelon

et al. 1974

Helvetica Chimica Acta

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One of us (H.F.E.) acknowledges with gratitude an equipment grant from the Schweizerischer Nationalfonds zur Forderung der wissenschaftlichen Forschung under project number 2.826.73 and the other (J.C.W.S) wishes to express his appreciation of the encouragement given and experimental facilities provided by Prof. G. Schwarz in the Department of Biophysical Chemistry of the Biocentre. We also wish to thank Mr. A . Lustig for making the centrifuge measurements and Mr. H . Hammerich for his technical assistance. 213.Recherches dans la sCrie des cyclitols XLV. Action des diazoalcanes sur la pentahydroxy-2,4,6/3,5-cyclohexanone et sur son d6rivC penta-0 -ac6tyl& I. Etude des spiro-6poxydesI)z)Summary. On treatment with diazomethane, 2,4,6/3,5-penta-acetoxy-cycIohexanone (penta-0-acetyl-myo-inosose-2 or -scyllo-inosose) gave only a spiroepoxide. I n contrast, replacement of diazomethane by higher diazoalkanes furnished a mixture of alkylspiroepoxides and of ring expansion products (cycloheptanone derivatives). The configuration and the reactions of the spiro-epoxides have been studied. l) 2, Toutes les substances chirales sont sous formc rackmique; on a supprime dans le tcxtc Ics ddsignations (&) ou DL. Une grande partie de ce travail avait 6tB exdcutie par A . Giddey cn 1953-1955. Cette substance avait 6tB dBsignCe autrcfois coniinc oxyde rle iiicthvlL;ne-pentahydrox~cyclohcxane [l]. CPG. = chromatographie en phasc gazeuse. Les substances IX donnent la rCaction des Cpoxydes indiqiiie par Wuchana./? & Schwurz [4;. HELVETICA CHIMICA ACTA ~ Vol. 57, F a x . 7 (1974) -Nr. 213 196.5Sous l'action de HBr en solution dans l'acide adtique, il se produit une ouverture du cycle Cpoxydique avec formation de penta-0-adtyl-bromo-7-alkyl-C-inositols VIII. Les mCthyl-C et Cthyl-C-;piro-Cpoxydes X c et X d ont fourni ainsi des penta-0-adtyl-bromoCthy1-C-et bromopropyl-C-inositols VIII c et VIIId. Ces deux dCriv6s bromCs contiennent un OH tertiaire en C(2), d'oh leur rCsistance k l'oxydation chromique, et portent l'haloghe en C(7).Ceci se traduit dans le s p x t r e RMN. dc 1 7 1 1 1 c par un quadruplct i d 4,22 ppm. pour HC(7)Br, rCsultant du couplagc avec les 3 H du groupe mkthylc cn C(8). Ces trois H donnent lien, par suite dc leur couplage avcc HC(7) k un doublet ( J v i c 7,0 Hz). Le groupe hydroxyle tertiaire se manifeste dans DMSO-d,') par un singulet k d 3,35 ppm. qui est dCplacC k 8.85 ppm. en pr6sence de TFA-d,s), L'absence dc couplage vicinal JHCOH confirme la nature tertiaire de cet hydroxylc. Dans lc spectrc RMN. de la substance homologue VIIId, lc proton cn C(7) fournit un double doublet i d 4,35 ppm., ce qui montre la non-Cquivalcncc dcs deux protons mCthyl6niques voisins en C(8); les couplages Jvic 10,O e t 3,0 Hz indiquent dcs orientations resp. syn ct anti de ces deux protons par rapport B HC(7). Parmi les rotamkres possibles, 1 e t 2 (formules de projection selon Newurnan dans lesquelles la liaison C(7)-C(8) est perpendiculaire au plan du papier) remplissent ces conditions. AcODans 1, la comprcssion stcirique entre CH...

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Light scattering study of sodium 2 ,6-di-n-alkylnaphthalene-1-sulfonates

Cited by 23 publications

References 18 publications

The Effect of Concentration, Solvent, and Temperature on Aggregation of a Commercial Calcium Sulfonate Additive as Studied by FTIR and Light Scattering Techniques

The Effect of Concentration, Solvent, and Temperature on Aggregation of a Commercial Calcium Sulfonate Additive as Studied by FTIR and Light Scattering Techniques

High resolution electron spectroscopic imaging (ESI) of reverse micelles

Recherches dans la série des cyclitols XLV. Action des diazoalcanes sur la pentahydroxy‐2,4,6/3,5‐cyclohexanone et sur son dérivé penta‐O‐acétylé. I. Etude des spiro‐époxydes

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