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Aqueous foams stabilized by n-dodecyl-β-d-maltoside, hexaethyleneglycol monododecyl ether, and their 1: 1 mixture

Soft Matter, ISSN: 1744-683X, Vol: 5, Issue: 16, Page: 3070-3080
2009
  • 58
    Citations
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  • 45
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    58
    • Citation Indexes
      58
  • Captures
    45

Article Description

Aqueous foams stabilized by the non-ionic surfactants n-dodecyl-β-d- maltoside (β-CG) and hexaethyleneglycol monododecyl ether (CE) as well as by their 1: 1 mixture were studied as a function of the total surfactant concentration from 0.1 to 10 cmc. Foamability and foam stability were measured with home-built winding equipment, the commercially available FoamScan, and a home-built foam conductivity apparatus (FCA), respectively. It was found that the foamability increases with increasing surfactant concentration for both the single and the mixed surfactant systems. On the other hand, at a fixed relative surfactant concentration (c/cmc) the foamability of β-CG solutions was found to be much higher than that of CE solutions, while the 1: 1 mixture behaves like the pure CE . Measurements at different gas (N) flow rates have shown that the foamability decreases non-linearly with decreasing N flow rate, which shows that foam generation and foam breakdown occur simultaneously. Regarding foam stability it was found that it also increases with increasing surfactant concentration. As was the case for the foamability, the stability of foams stabilized by β-CG was much higher than that of foams stabilized by CE, while the foam stability of the 1: 1 mixture was comparable to that of the pure C E. The foam results are discussed in the light of static surface tensions, dynamic surface tensions, and surface elasticities, which were measured for the single and the mixed surfactant systems. © 2009 The Royal Society of Chemistry.

Bibliographic Details

Cosima Stubenrauch; Dharmesh Varade; Lok Kumar Shrestha; Kenji Aramaki; Ingegard Johansson; Geoffrey Olanya; Per Claesson

Royal Society of Chemistry (RSC)

Chemistry; Physics and Astronomy

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