Mechanism leading to super-detergent power for nonionic surfactants

Chiu, Y.C.; Chen, L.J.; Pien, W.I.

doi:10.1016/0166-6622(88)80079-9

Cited by 16 publications

(15 citation statements)

References 22 publications

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“…The adsorption capacity of the samples for the four Trix(T ) Å (5.879 1 10 03 )T 0 1.6583. [1] tons, in general, follows the trend QC ú QB ú QA ú kaolin ú dolomite (Table 2), except for TX-114, for which QA This means that an increase in adsorption temperature favors and kaolin positions are inverted, and for TX-305, for which contacts between polyoxyethylenic chains over water-polythe values of the last three samples are very close. Usually oxyethylenic chain interactions.…”

Section: Resultsmentioning

confidence: 84%

Adsorption of Polyoxyethylenic Surfactants on Quartz, Kaolin, and Dolomite: A Correlation between Surfactant Structure and Solid Surface Nature

Nevskaia

Guerrero-Ruı́z

López-González

1996

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 84%

Adsorption of Polyoxyethylenic Surfactants on Quartz, Kaolin, and Dolomite: A Correlation between Surfactant Structure and Solid Surface Nature

Nevskaia

Guerrero-Ruı́z

López-González

1996

Journal of Colloid and Interface Science

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“…In direct measurements involving cleaning processes, Chiu et al (15), varied the ethoxy chain length for C 12 E y surfactants from y ϭ 4 to y ϭ 8. They found that as y decreased, solubilization rates of nonpolar hydrocarbons increased.…”

Section: Effect Of Surfactant Molecular Structure On Cleaningmentioning

confidence: 99%

Removal of Organic Films From Rotating Disks Using Aqueous Solutions of Nonionic Surfactants: Effect of Surfactant Molecular Structure

Kabin

Tolstedt

Sáez

et al. 1998

Journal of Colloid and Interface Science

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“…From nonideal solution theory, the activity coefficients at the interface can be approximated by the relationship: [4] [ 5] where β σ is the molecular interaction parameter for mixed monolayer formation. Equations 2 to 5 give relationships valid for nonionic amphiphilic substances: [6] and [7] from which the relative effectiveness of adsorption at the interface and the molecular interaction parameter β σ can be determined.…”

Section: Resultsmentioning

confidence: 99%

Surface activity of mixtures of oxyethylated methyl dodecanoate and sodium dodecylbenzenesulfonate

Makowska

Hreczuch

Zimoch

et al. 2001

J Surfact & Detergents

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Surface and interfacial tension and detergency of mixtures containing oxyethylated methyl dodecanoate and sodium dodecylbenzenesulfonate were determined. Synergism in the surface tension reduction was not observed. The competition for adsorption at the air/water interface between oxyethylated methyl dodecanoate and sodium dodecylbenzenesulfonate depended on the considered surface tension, the weight ratio of surfactants in the aqueous phase, and the hydrophile-lipophile balance of the nonionic surfactant. Generally, coverage of the interface with oxyethylated methyl dodecanoate increased when surface tension decreased. Nonionics were the dominant species at the interface in the important region of surface activity, i.e., for surface tensions below 40 mN m −1 . The mole fraction of the hydrophobic nonionic at the interface was higher than the contribution of hydrophilic oxyethylates. An increase of the surfactant ratio in the bulk phase affects the interfacial ratio of surfactants in the same way. The lowest interfacial tension (1.5 mN m −1 ) at the hexadecane/water interface was observed for oxyethylated methyl dodecanoate having an average degree of oxyethylation equal to 8 and 10. Nearly 5 min was needed to achieve equilibrium value. Mixtures with sodium dodecylbenzenesulfonate decreased the interfacial tension somewhat less efficiently but the equilibrium was rapidly established. The standard washing powders containing oxyethylated methyl dodecanoates exhibited washing ability similar to that obtained for the powder with traditional alcohol oxyethylate.

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Mechanism leading to super-detergent power for nonionic surfactants

Cited by 16 publications

References 22 publications

Adsorption of Polyoxyethylenic Surfactants on Quartz, Kaolin, and Dolomite: A Correlation between Surfactant Structure and Solid Surface Nature

Adsorption of Polyoxyethylenic Surfactants on Quartz, Kaolin, and Dolomite: A Correlation between Surfactant Structure and Solid Surface Nature

Removal of Organic Films From Rotating Disks Using Aqueous Solutions of Nonionic Surfactants: Effect of Surfactant Molecular Structure

Surface activity of mixtures of oxyethylated methyl dodecanoate and sodium dodecylbenzenesulfonate

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