Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface

[Image: see text] A general adsorption model based on partial dissociation was developed for carboxylic acids. The model was applied to the adsorption of nonanoic acid at the air/water interface. Two cases were selected for experimental verification: acid-only and acid with a constant Na(+)OH(–) con...

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Autores principales: Badban, Shiva, Hyde, Anita E., Phan, Chi M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644816/
https://www.ncbi.nlm.nih.gov/pubmed/31457822
http://dx.doi.org/10.1021/acsomega.7b00960
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author Badban, Shiva
Hyde, Anita E.
Phan, Chi M.
author_facet Badban, Shiva
Hyde, Anita E.
Phan, Chi M.
author_sort Badban, Shiva
collection PubMed
description [Image: see text] A general adsorption model based on partial dissociation was developed for carboxylic acids. The model was applied to the adsorption of nonanoic acid at the air/water interface. Two cases were selected for experimental verification: acid-only and acid with a constant Na(+)OH(–) concentration. The model was applied simultaneously at both conditions, and the hydrophilicity of the ionic states was quantified by the adsorption constants, K(A) and K(AH). It was found that the adsorption constant for the acidic group is significantly higher than that for the carboxylate group, K(AH)/K(A) ∼ 272. The model lays important groundwork for modeling and predicting carboxylic/carboxylate adsorption.
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spelling pubmed-66448162019-08-27 Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface Badban, Shiva Hyde, Anita E. Phan, Chi M. ACS Omega [Image: see text] A general adsorption model based on partial dissociation was developed for carboxylic acids. The model was applied to the adsorption of nonanoic acid at the air/water interface. Two cases were selected for experimental verification: acid-only and acid with a constant Na(+)OH(–) concentration. The model was applied simultaneously at both conditions, and the hydrophilicity of the ionic states was quantified by the adsorption constants, K(A) and K(AH). It was found that the adsorption constant for the acidic group is significantly higher than that for the carboxylate group, K(AH)/K(A) ∼ 272. The model lays important groundwork for modeling and predicting carboxylic/carboxylate adsorption. American Chemical Society 2017-09-07 /pmc/articles/PMC6644816/ /pubmed/31457822 http://dx.doi.org/10.1021/acsomega.7b00960 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Badban, Shiva
Hyde, Anita E.
Phan, Chi M.
Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface
title Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface
title_full Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface
title_fullStr Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface
title_full_unstemmed Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface
title_short Hydrophilicity of Nonanoic Acid and Its Conjugate Base at the Air/Water Interface
title_sort hydrophilicity of nonanoic acid and its conjugate base at the air/water interface
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644816/
https://www.ncbi.nlm.nih.gov/pubmed/31457822
http://dx.doi.org/10.1021/acsomega.7b00960
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