Adsorption kinetics of the ionic surfactant decanoic acid

Casandra, Alvin; Lin, Ya Chi; Liggieri, Libero; Ravera, Francesca; Tsay, Ruey Yug; Lin, Shih-Syun

doi:10.1016/j.ijheatmasstransfer.2016.05.130

Cited by 16 publications

(7 citation statements)

References 33 publications

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“…The ionization constant was obtained (Figure 5) by fitting the experimental data to the following equationThe ionization constant, k a , was obtained as 1.7 × 10 –5 M with a corresponding p K a of 4.77, in good agreement with the p K a of 4.96 reported for nonanoic acid 17 and consistent with the current literature on carboxylic acids. 18…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, different cations can be used to quantify the impact of water hardness on soap dissociation . The theoretical framework can be also extended to dynamic adsorption, by combining the diffusion process and chemical reaction kinetics. The chemical reaction can be the physical nature of the “barrier-limited” adsorption, which has been proposed in the literature over the last three decades .…”

Section: Discussionmentioning

confidence: 99%

“…The ionization constant, k a , was obtained as 1.7 × 10 −5 M with a corresponding pK a of 4.77, in good agreement with the pK a of 4.96 reported for nonanoic acid 17 and consistent with the current literature on carboxylic acids. 18 Modeling Surface Tension. The interference of micelles or aggregates with surfactant adsorption remains a controversial issue in the literature.…”

Section: ■ Theoretical Modelingmentioning

confidence: 99%

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

2017

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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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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: ■ Theoretical Modelingmentioning

confidence: 99%

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

2017

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“…Os surfactantes ou tensoativos são moléculas anfifílicas, ou seja, que apresentam duas regiões na sua estrutura com comportamento químico diferente: uma parte hidrofóbica (cauda) que tem afinidade por compostos apolares, e outra parte hidrofílica (cabeça) que possui afinidade por água ou moléculas polares (CASANDRA et al, 2016). O termo surfactante vem da contração da frase em inglês surface active agent, que faz referência à atividade destas moléculas em superfícies e interfaces.…”

Section: Surfactantesunclassified

“…Os surfactantes são usados amplamente em muitas áreas de aplicação, devido a suas diversas propriedades, tais como a umectação, emulsificação, formação de espuma, solubilização, dispersão, lavado de superfícies, entre outras (CASANDRA et al, 2016). Em geral, se classificam em quatro classes principais de acordo à natureza do grupo polar: aniônicos, catiônicos, não iônicos e zwitteriônicos.…”

Section: Surfactantesunclassified

Nanopartículas De Sílica Híbridas Para Estabilização De Dispersões Bifásicas

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A Deus e Jesus Cristo por estarem sempre me acompanhando em meus projetos de vida e a virgem de Santa Marta por sua intercessão. À meus pais por terem me dado a vida. À professora Aurora Perez Gramagtes por seu apoio, confiança, dedicação, conselhos e por ter ajudado na minha formação acadêmica durante o mestrado com suas orientações e ensinamentos para a minha vida, eternamente agradecido.Ao Luis Maqueira por seu acompanhamento e suporte no desenvolvimento deste trabalho.Aos meus irmãos Francisco, Roberto, John, Johana, Carmen e especialmente Astrid, Yara, José Ignácio por seu apoio e ajuda em todo momento.Aos meus amigos da vida toda, , por ter torcido por mim neste projeto.Ás minhas cunhadas, Ledys Diaz, Milena Romero, Yasmin Ramos, Greys pelo carinho fornecido e ter-me dado os melhores presentes que eu já recebi: meus sobrinhos. E quando eu achava que já tinha os melhores amigos, a vida me deu de presente novos amigos:

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On the adsorption kinetics of an eco‐friendly surfactant n‐decyl‐β‐D‐maltopyranoside

Tseng

Hussain

Tsay

et al. 2023

J Surfact & Detergents

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Eco‐friendly surfactant alkyl polyglycosides (APGs) have garnered ample interest in the literature. However, the adsorption kinetics of APGs at an air‐water interface has not been studied to date. Consequently, this study aimed at investigating the adsorption kinetics of the APG n‐decyl‐β‐D‐maltopyranoside (β‐C10G2) at a freshly created air‐water interface. The dynamic and equilibrium surface tension (ST) of the aqueous β‐C10G2 solutions were experimentally measured at varying concentrations using a pendant bubble tensiometer and the ST data were examined via theoretical simulations using the Langmuir and Frumkin models. The fitting results revealed that the Frumkin model (with K = −2.9) well‐predicted the equilibrium ST data; signifying a considerable cohesive intermolecular force amidst the adsorbed β‐C10G2 molecules. The theoretical mixed‐controlled ST profiles (predicted by the Frumkin model) described the dynamic ST data reasonably well, but the adsorption rate constant increased significantly at increasing concentration. A comparison on the ST data of β‐C10G2 and β‐C12G2 (n‐dodecyl‐β‐D‐maltopyranoside) was also conducted and a relatively greater surface‐activity and lower cmc of the latter alkyl glycoside was observed.

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Adsorption kinetics of the ionic surfactant decanoic acid

Cited by 16 publications

References 33 publications

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

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

Nanopartículas De Sílica Híbridas Para Estabilização De Dispersões Bifásicas

On the adsorption kinetics of an eco‐friendly surfactant n‐decyl‐β‐D‐maltopyranoside

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