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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c02613
|2 doi
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|a pubmed25n1117.xml
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|a (DE-627)NLM33520693X
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|a (NLM)34985293
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|a DE-627
|b ger
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|a eng
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|a Azémard, C
|e verfasserin
|4 aut
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| 245 |
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|a Influence of Unsaturations on the Organization and Air Reactivity of Triglyceride Monolayers
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 01.02.2022
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|a Date Revised 01.02.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The behavior of Langmuir monolayers of saturated and unsaturated C18 triglycerides (TAGs) was studied as two-dimensional (2D) models for paint systems at the air-water interface or transferred onto solid films. The organization of saturated tristearin (C18:0) monolayer was probed thanks to grazing incidence X-ray diffraction: one observes a hexagonal packing of the chains perpendicular to the air-water interface, in contrast to what is described in the literature. Conversely, the mono- and polyunsaturated TAGs (triolein C18:1, trilinolein C18:2, and trilinolenin C18:3) monolayers do not present any organization at the air-water interface but do exhibit peculiar reactivity regarding the air atmosphere. The obtained results derived from the evolution of surface pressure-molecular area isotherms and monolayer compressibility under different atmospheres over time, combined with ultrahigh-vacuum infrared (UHV-FTIR) spectroscopy, showed the adsorption of O2 molecules in the monolayer together with chemical reactions with hydrocarbon chains. The kinetic effect of lead ions, known to be efficient siccative agents in oil paints, was also assessed: the addition of Pb2+ in the subphase induces an increase of the O2 adsorption
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Ions
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Triolein
|2 NLM
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|a 122-32-7
|2 NLM
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|a Fauré, M C
|e verfasserin
|4 aut
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|a Stankic, S
|e verfasserin
|4 aut
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|a Chenot, S
|e verfasserin
|4 aut
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|a Ibrahim, H
|e verfasserin
|4 aut
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|a Laporte, L
|e verfasserin
|4 aut
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|a Fontaine, P
|e verfasserin
|4 aut
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|a Goldmann, M
|e verfasserin
|4 aut
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|a de Viguerie, L
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 38(2022), 2 vom: 18. Jan., Seite 711-718
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
1 |
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|g volume:38
|g year:2022
|g number:2
|g day:18
|g month:01
|g pages:711-718
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|u http://dx.doi.org/10.1021/acs.langmuir.1c02613
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