TY - JOUR
T1 - Behavior of dinonylnaphthalene sulfonate monolayers at the air-water interface
AU - Chaiko, D. J.
AU - Osseo-Asare, K.
N1 - Funding Information:
This research was supported, in part, by the National Science Foundation. The authors thank Dr Jeffrey M. Gold for useful discussions on experimental techniques.
PY - 2000/12/30
Y1 - 2000/12/30
N2 - The interfacial behavior of the sodium salt of dinonylnaphthalene sulfonic acid, a highly surface-active metal extractant, has been studied using Langmuir trough techniques. Monolayer desorption experiments were conducted at various surface pressures and substrate compositions. The rates of film contraction were found to be consistent with diffusion-controlled dissolution. Pressure-area isotherms indicated the presence of a single surface phase with a two-dimensional compressibility characteristic of a liquid-condensed film. Monolayer collapse occurred at a limiting molecular area of 67 Å2. Comparison of the monolayer dissolution rates with metal extraction rates indicates the dominance of an interfacial extraction mechanism over an aqueous phase extraction mechanism. (C) 2000 Published by Elsevier Science B.V.
AB - The interfacial behavior of the sodium salt of dinonylnaphthalene sulfonic acid, a highly surface-active metal extractant, has been studied using Langmuir trough techniques. Monolayer desorption experiments were conducted at various surface pressures and substrate compositions. The rates of film contraction were found to be consistent with diffusion-controlled dissolution. Pressure-area isotherms indicated the presence of a single surface phase with a two-dimensional compressibility characteristic of a liquid-condensed film. Monolayer collapse occurred at a limiting molecular area of 67 Å2. Comparison of the monolayer dissolution rates with metal extraction rates indicates the dominance of an interfacial extraction mechanism over an aqueous phase extraction mechanism. (C) 2000 Published by Elsevier Science B.V.
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U2 - 10.1016/S0927-7757(00)00605-1
DO - 10.1016/S0927-7757(00)00605-1
M3 - Article
AN - SCOPUS:0034736615
SN - 0927-7757
VL - 175
SP - 335
EP - 347
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
IS - 3
ER -