Evidence map›Paper›PMID 24563383›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Surface shear inviscidity of soluble surfactants.

Zachary A Zell, Arash Nowbahar, Vincent Mansard, L Gary Leal, Suraj S Deshmukh, Jodi M Mecca, Christopher J Tucker, Todd M Squires

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Article
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  9. Article
  10. The surface tension of surfactant-containing, finite volume droplets.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  11. Article
  12. Article
  13. Article
  14. Evolution and mechanics of mixed phospholipid fibrinogen monolayers.Journal of the Royal Society, Interface · 2018
    Article
  15. Article
  16. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Zachary A ZellDepartment of Chemical Engineering, University of California, Santa Barbara, CA 93106-5080.
Arash Nowbahar
Vincent Mansard
L Gary Leal
Suraj S Deshmukh
Jodi M Mecca
Christopher J Tucker
Todd M Squires

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Foam and emulsion stability has long been believed to correlate with the surface shear viscosity of the surfactant used to stabilize them. Many subtleties arise in interpreting surface shear viscosity measurements, however, and correlations do not necessarily indicate causation. Using a sensitive technique designed to excite purely surface shear deformations, we make the most sensitive and precise measurements to date of the surface shear viscosity of a variety of soluble surfactants, focusing on SDS in particular. Our measurements reveal the surface shear viscosity of SDS to be below the sensitivity limit of our technique, giving an upper bound of order 0.01 μN·s/m. This conflicts directly with almost all previous studies, which reported values up to 10(3)-10(4) times higher. Multiple control and complementary measurements confirm this result, including direct visualization of monolayer deformation, for SDS and a wide variety of soluble polymeric, ionic, and nonionic surfactants of high- and low-foaming character. No soluble, small-molecule surfactant was found to have a measurable surface shear viscosity, which seriously undermines most support for any correlation between foam stability and surface shear rheology of soluble surfactants.

Indexed as

Models, ChemicalMagnetsRheologyShear StrengthSodium Dodecyl SulfateSurface-Active AgentsViscositySodium Dodecyl SulfateSurface-Active Agents

Identifiers

PMID24563383
PMCPMC3956153

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.