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Application of the Gibbs equation to the adsorption of nonionic surfactants and polymers at the air-water interface: comparison with surface excesses determined directly using neutron reflectivity.

Abstract:

Four recent papers by Menger et al. have questioned methods of analysis of surface tension (ST) data that use the Gibbs equation to obtain the surface excess (Γ) of a surfactant at the air-water interface. There have been two responses which challenge the assertions of Menger et al. and a response from Menger et al. We use directly determined values of Γ from a range of neutron reflectometry (NR) data to examine some of the issues that are relevant to these seven papers. We show that there is...

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Publication status:
Published

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Publisher copy:
10.1021/la4018344

Authors


Thomas, RK More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
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Journal:
Langmuir : the ACS journal of surfaces and colloids
Volume:
29
Issue:
30
Pages:
9324-9334
Publication date:
2013-07-05
DOI:
EISSN:
1520-5827
ISSN:
0743-7463
URN:
uuid:464fb85c-90a7-4e08-a74e-5fd393a55cef
Source identifiers:
407815
Local pid:
pubs:407815
Language:
English

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