Langmuir isotherm explains maximum foamability

被引：7

作者：

Arciniega Saavedra, Oscar ^{[1
]}

Gracia Fadrique, Jesus ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Fac Quim, Dept Fis Quim, Mexico City 04510, DF, Mexico

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2016年 / 497卷

关键词：

Foam; Foamability; Surfactant; Elasticity; Surface; SURFACE; BEHAVIOR; HEIGHT;

D O I：

10.1016/j.colsurfa.2016.02.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The relevant and promising empirical observation of M. Rosen regarding the maximum foam height in a column at the critical micelle concentration is explained using basic thermodynamic analysis. Elasticity determined isothermally from the equilibrium pi-A curve and Gibbs elasticity modulus, is evaluated by means of the Langmuir isotherm and the corresponding surface equation of state. Beyond surface tension, relevant variables on foam behavior were found on first and second derivatives of surface pressure in relation to bulk composition. This maximum foamability related to elasticity is predicted from the Gibbs elasticity modulus and it shows that the maximum formability is reached in the vicinity of surface saturation conditions and therefore in the neighborhood of critical micelle concentration. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：41 / 44

页数：4

共 22 条

[11] Gibbs elasticity, surface dilational modulus and diffusional relaxation in nonionic surfactant monolayers [J].

Lucassen-Reynders, EH ;

Cagna, A ;

Lucassen, J .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2001, 186 (1-2) :63-72

[12] Foams under dynamic conditions [J].

Malysa, K. ;

Lunkenheimer, K. .

CURRENT OPINION IN COLLOID & INTERFACE SCIENCE, 2008, 13 (03) :150-162

[13]

Novelo-Torres AM., 2005, ED QUIM, V16, P63

[14]

Rosen M.J., 2004, SURFACTANTS INTERFAC, P285

[15] FACTORS AFFECTING INITIAL FOAM HEIGHT IN ROSS-MILES FOAM TEST [J].

ROSEN, MJ ;

SOLASH, J .

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 1969, 46 (08) :399-&

[16] FOAMINESS OF BINARY AND TERNARY SOLUTIONS [J].

ROSS, S ;

NISHIOKA, G .

JOURNAL OF PHYSICAL CHEMISTRY, 1975, 79 (15) :1561-1565

[17]

Ross S., 1988, Colloidal systems and interfaces

[18]

Sheludko A., 1996, COLLOID CHEM, P254

[19] Transient foaming behavior of aqueous alcohol solutions as related to their dilational surface properties [J].

Tuinier, R ;

Bisperink, CGJ ;

vandenBerg, C ;

Prins, A .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1996, 179 (02) :327-334

[20] APPLICATION OF SURFACE THERMODYNAMICS TO GIBBS ELASTICITY [J].

VANDENTE.M ;

LUCASSEN, J ;

LUCASSEN.EH .

JOURNAL OF PHYSICAL CHEMISTRY, 1965, 69 (06) :1798-&

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