Adsorption kinetics of C12E8 at the air-water interface: Adsorption onto a clean interface

Shi Yow Lin; Ruey Yug Tsay; Lung Wei Lin; Shou I. Chen

doi:10.1021/la9605798

Adsorption kinetics of C₁₂E₈ at the air-water interface: Adsorption onto a clean interface

Shi Yow Lin^*, Ruey Yug Tsay, Lung Wei Lin, Shou I. Chen

^*Corresponding author for this work

Department of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

136 Scopus citations

Abstract

The adsorption of C₁₂E₈ onto a clean air-water interface is studied by using a video-enhanced pendant bubble tensiometry. The controlling mechanism for mass transfer changes as a function of bulk concentration; it shifts from diffusion control at dilute concentration to mixed diffusion-kinetic control at more elevated bulk concentration. The adsorption of C₁₂E₈ is found to be anticooperative from the equilibrium surface tension data compared with the prediction of the (generalized) Frumkin model. Relaxation profiles of surface tension for C₁₂E₈ molecules absorbing onto a freshly created air-water interface for 21 different bulk concentrations are obtained. Comparison is made for the entire relaxation period of the tension data and the model predictions. Values of the diffusion coefficient and the adsorption/ desorption rate constants of C₁₂E₈ are calculated from these dynamic surface tension profiles.

Original language	English
Pages (from-to)	6530-6536
Number of pages	7
Journal	Langmuir
Volume	12
Issue number	26
DOIs	https://doi.org/10.1021/la9605798
State	Published - 25 Dec 1996

Access to Document

10.1021/la9605798

Cite this

@article{65d1f11a2d904ffbb5e3df37c10c2200,

title = "Adsorption kinetics of C12E8 at the air-water interface: Adsorption onto a clean interface",

abstract = "The adsorption of C12E8 onto a clean air-water interface is studied by using a video-enhanced pendant bubble tensiometry. The controlling mechanism for mass transfer changes as a function of bulk concentration; it shifts from diffusion control at dilute concentration to mixed diffusion-kinetic control at more elevated bulk concentration. The adsorption of C12E8 is found to be anticooperative from the equilibrium surface tension data compared with the prediction of the (generalized) Frumkin model. Relaxation profiles of surface tension for C12E8 molecules absorbing onto a freshly created air-water interface for 21 different bulk concentrations are obtained. Comparison is made for the entire relaxation period of the tension data and the model predictions. Values of the diffusion coefficient and the adsorption/ desorption rate constants of C12E8 are calculated from these dynamic surface tension profiles.",

author = "Lin, {Shi Yow} and Tsay, {Ruey Yug} and Lin, {Lung Wei} and Chen, {Shou I.}",

year = "1996",

month = dec,

day = "25",

doi = "10.1021/la9605798",

language = "English",

volume = "12",

pages = "6530--6536",

journal = "Langmuir",

issn = "0743-7463",

publisher = "American Chemical Society",

number = "26",

}

TY - JOUR

T1 - Adsorption kinetics of C12E8 at the air-water interface

T2 - Adsorption onto a clean interface

AU - Lin, Shi Yow

AU - Tsay, Ruey Yug

AU - Lin, Lung Wei

AU - Chen, Shou I.

PY - 1996/12/25

Y1 - 1996/12/25

N2 - The adsorption of C12E8 onto a clean air-water interface is studied by using a video-enhanced pendant bubble tensiometry. The controlling mechanism for mass transfer changes as a function of bulk concentration; it shifts from diffusion control at dilute concentration to mixed diffusion-kinetic control at more elevated bulk concentration. The adsorption of C12E8 is found to be anticooperative from the equilibrium surface tension data compared with the prediction of the (generalized) Frumkin model. Relaxation profiles of surface tension for C12E8 molecules absorbing onto a freshly created air-water interface for 21 different bulk concentrations are obtained. Comparison is made for the entire relaxation period of the tension data and the model predictions. Values of the diffusion coefficient and the adsorption/ desorption rate constants of C12E8 are calculated from these dynamic surface tension profiles.

AB - The adsorption of C12E8 onto a clean air-water interface is studied by using a video-enhanced pendant bubble tensiometry. The controlling mechanism for mass transfer changes as a function of bulk concentration; it shifts from diffusion control at dilute concentration to mixed diffusion-kinetic control at more elevated bulk concentration. The adsorption of C12E8 is found to be anticooperative from the equilibrium surface tension data compared with the prediction of the (generalized) Frumkin model. Relaxation profiles of surface tension for C12E8 molecules absorbing onto a freshly created air-water interface for 21 different bulk concentrations are obtained. Comparison is made for the entire relaxation period of the tension data and the model predictions. Values of the diffusion coefficient and the adsorption/ desorption rate constants of C12E8 are calculated from these dynamic surface tension profiles.

UR - http://www.scopus.com/inward/record.url?scp=0001672809&partnerID=8YFLogxK

U2 - 10.1021/la9605798

DO - 10.1021/la9605798

M3 - Article

AN - SCOPUS:0001672809

SN - 0743-7463

VL - 12

SP - 6530

EP - 6536

JO - Langmuir

JF - Langmuir

IS - 26

ER -

Adsorption kinetics of C₁₂E₈ at the air-water interface: Adsorption onto a clean interface

Abstract

Access to Document

Other files and links

Fingerprint

Cite this