Effect of alcohols on micelle formation in aqueous solutions of ethoxylated nonyl-phenols

Bedö, Zs.; Berecz, E.; Lakatos, István; Lakatos-Szabó, J.

doi:10.1007/bfb0118262

Cited by 15 publications

(2 citation statements)

References 14 publications

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“…6. These new experimental findings again confirm the earlier statements, according to which, in an aqueous solution of different ethoxylated nonyl-phenols to be applied in EOR or surface technology, the higher the temperature and the lower the number of ethoxy groups on the hydrophobic nucleus, the more stable the structure of micelles in temperature range of 293−323 K. 49,50 . Investigating the micelle formation of ethoxylated nonyl-phenols in mixed solvents containing different short chain alcohols as a function of temperature (293−333 K) our earlier results can be summarized as follows: 1.…”

Section: Application Of Nonionic Surfactants In Oilfield Chemistrysupporting

confidence: 87%

Application of Nonionic Tenside Homologues in IOR/EOR and Oilfield Chemistry: Fundamental and Engineering Aspects

Lakatos

Lakatos-Szabó

Bedö

2003

International Symposium on Oilfield Chemistry

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThe paper gives an overview on the application of Nonionic surfactants in hydrocarbon industry, particularly oil production. Advantages and disadvantages are critically analyzed in field of recovery and well treatment methods, drilling and well completion, surface technology and pipe line transportation. On the basis of the literature survey it is concluded that the practice oriented R&Ds performed during the past half century were not sufficiently supported by fundamental physico chemical and colloid chemical research. In the second part of the paper the authors give a concise summary of their studies aimed at forming a theoretical basis of wide range applications of ethoxylated nonyl-phenols in oilfield chemistry. The research program comprised the thermodynamic characterization of micellization, determination of micelle and solution structure, effect of different additives, interfacial properties in gas−water and oil−water systems and the effect of tensides on interfacial rheological properties. The microscopic approach and molecular interpretation of the observed phenomena allowed the authors to recommend more precisely where, when and which of the tensides have the highest potential in different oilfield applications.

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Section: Application Of Nonionic Surfactants In Oilfield Chemistrysupporting

confidence: 87%

Application of Nonionic Tenside Homologues in IOR/EOR and Oilfield Chemistry: Fundamental and Engineering Aspects

Lakatos

Lakatos-Szabó

Bedö

2003

International Symposium on Oilfield Chemistry

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“…The critical micelle concentration first decreases due to the alcohol addition (at the alcohol concentration lower than 10%), then increases in the alcohol concentration range from 10-30%. Bedo et al [9] suggested that the increasing effect of alcohols on the CMC of surfactants with their increasing concentration in the bulk phase can be related to the enhanced solvent power of the alcohol-water mixtures. A less polar medium causes more difficulties for micellization.…”

Section: Introductionmentioning

confidence: 98%