Effect of urea, guanidinium chloride, and dioxane on the c.m.c. of branched-chain nonionic detergents

Schick, M. J.; Gilbert, Alyssa

doi:10.1016/0095-8522(65)90026-7

Cited by 79 publications

(18 citation statements)

References 19 publications

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“…Generally, an increase in the number of hydrophilic units in the block copolymers leads to an increase in the CMC [141,142]. An increase in the hydrophilicity improves the aqueous solubility of polymer and hence lowers the tendency for the polymeric surfactants to form micelles and thereby increases the CMC [143].…”

Section: Properties and Characterization Of Micellesmentioning

confidence: 99%

Polymeric micelles: authoritative aspects for drug delivery

Kulthe

Choudhari

Inamdar

et al. 2012

Designed Monomers and Polymers

193

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Section: Properties and Characterization Of Micellesmentioning

confidence: 99%

Polymeric micelles: authoritative aspects for drug delivery

Kulthe

Choudhari

Inamdar

et al. 2012

Designed Monomers and Polymers

193

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“…Materials such as xylose and fructose decrease the CMC of the surfactant (Schwuger, 1971). On the other hand dioxane, ethylene glycol, water-soluble esters, and short-chain alcohols at high bulk phase concentrations may increase the CMC (Schick and Gilbert, 1965). 4.…”

Section: Microemulsion Preparationmentioning

confidence: 98%

“…The second class is materials that alter the CMC by modifying solvent-micelle or solventsurfactant interaction like urea, form-amide, and guanidinium salts. It is believed that these second class materials increase the CMC of surfactants in aqueous solution (Schick and Gilbert, 1965). Materials such as xylose and fructose decrease the CMC of the surfactant (Schwuger, 1971).…”

Section: Microemulsion Preparationmentioning

confidence: 99%

Pre-prepared Microemulsion Flooding in Enhanced Oil Recovery: A Review

Jeirani

Jan

Ali

et al. 2013

Petroleum Science and Technology

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It is evident that one of the important applications of microemulsions is in enhanced oil recovery (EOR) process due to its unique properties such as ultra-low interfacial tension. The injection of microemulsion slug reduces the interfacial tension between the crude oil and reservoir brine, which leads to mobilization of substantial fraction of residual oil. In general microemulsion flooding is classified into two distinct categories, pre-prepared and in situ prepared, depending on its preparation method. The authors present a detailed discussion of microemulsion preparation and summarizes major articles on pre-prepared microemulsion flooding in EOR processes. Their review opens new horizons for the future researches on pre-prepared microemulsion flooding in EOR processes by organizing the literature data and comparing them.

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“…The influence on micellization caused by additives in the water has been investigated to a lesser extent (7,21,22,23), and the mechanism of the influence, even for small nonelectrolyte molecules (23), has not yet been described unambiguously. Micellization and solubilization in solvents other than water have been investigated (8,24,25,26,27,28 These studies throw light on the initial aggregation phenomena, which results in micelles and may also (17) constitute the necessary basis for understanding the subsequent agglomeration to liquid crystals.…”

Section: Micellization and Solubilizationmentioning

confidence: 99%

Micellar and Lyotropic Liquid Crystalline Phases Containing Nonionic Active Substances

Friberg

Rydhag

Doi

1976

Advances in Chemistry

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Phase diagrams of water, hydrocarbon, and nonionic surfactants (polyoxyethylene alkyl ethers) are presented, and their general features are related to the PIT value or HLB temperature. The pronounced solubilization changes in the isotropic liquid phases which have been observed in the HLB temperature range were limited to the association of the surfactant into micelles. The solubility of water in a liquid surfactant and the regions of liquid crystals obtained from water-surfactant interaction varied only slightly in the HLB temperature range. ^-phe phase equilibria of ionic surfactants combined with water and an A amphiphilic substance such as a long chain alcohol, carboxylic acid, or ester have been investigated in detail for a long time {1,2). The nonionic surfactants have not attracted as much interest despite the fact that they are suitable models for illustrating the association conditions which are responsible for the structure and function of biomembranes; they also present interesting problems in their temperature dependent interaction with water and hydrocarbons. This article discusses some micellar and liquid crystalline phases with nonionic substances, water, and hydrocarbons; and some factors are delineated for their association phenomena. Lipid phase behavior has an extremely important direct influence on certain biological phenomena ( Chapter 10 ) and is treated in Chapter 4. The treatment here is limited 28 Downloaded by STANFORD UNIV GREEN LIBR on September 24, 2012 |

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Effect of urea, guanidinium chloride, and dioxane on the c.m.c. of branched-chain nonionic detergents

Cited by 79 publications

References 19 publications

Polymeric micelles: authoritative aspects for drug delivery

Polymeric micelles: authoritative aspects for drug delivery

Pre-prepared Microemulsion Flooding in Enhanced Oil Recovery: A Review

Micellar and Lyotropic Liquid Crystalline Phases Containing Nonionic Active Substances

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