The Influence of Monolayers on Evaporation from Water Storages. IV. The Spreading of Monolayers from Solids

Abstract

It is shown that the nature and the rate of spreading of a monolayer from a solid depends upon the state and extent of the solid source and upon the hydrodynamic resistance to spreading. Experimental data describing spreading from solid cetyl alcohol are presented.

Rate of organic film formation and oxidation on aqueous drops

“…Some lipids spread on an aqueous surface from the solid state without the aid of a spreading solvent [ Cary and Rideal , 1925a, 1925b; Mansfield , 1959, 1962; Deo et al , 1962, 1964; Gaines , 1966; Iwahashi et al , 1985; Fang and Joos , 1992]. When placed at the aqueous‐air interface, lipid molecules break off from the solid phase and disperse on the solution surface.…”

“…Spreading rates from solid lipids are reported in relatively few studies and are slow when compared to spreading rates of liquid lipids [ Gaines , 1966 and references therein; Fang and Joos , 1992]. Additionally, spreading rates of fatty alcohols are better quantified than fatty acids [ Cary and Rideal , 1925a, 1925b; Mansfield , 1959, 1962; Deo et al , 1962, 1964; Gaines , 1966; Fang and Joos , 1992].…”

“…Previous studies have measured spreading rates from solid lipids on aqueous surfaces in a Langmuir trough or similar apparatus. When the advancing monolayer had a well‐defined boundary, talc powder sprinkled on the aqueous surface was used to track monolayer advancement [ Mansfield , 1959; Dussaud et al , 2005]. When the boundary was less defined, surface pressure was measured over time to monitor the lipid spreading.…”

“…The spreading rate was then calculated using previously determined area per molecule values for the lipid monolayer at a given surface pressure. Spreading rates have been reported as the number of molecules spreading from 1 cm of solid‐aqueous‐air boundary or “triple interface perimeter” per second (molecules cm −1 s −1 ) [ Mansfield , 1959, 1962; Deo et al , 1962, 1964; Gaines , 1966; Fang and Joos , 1992]. Spreading rates have been shown to decrease with increasing chain length for a given homologous series and with decreasing temperature [ Cary and Rideal , 1925a, 1925b; Deo et al , 1962, 1964; Fang and Joos , 1992].…”

Recherche de la toxicité des alcools gras supérieurs sur la truite arc-en-ciel (Salmo irideus). Étude particulière des effets de l'hexadécanol et de l'octadécanol sur la fonction respiratoire

“…** Laboratoire d'Hydrologie,Professeur Madame Françoise ERB,Faculté de Pharmacie,rue du Professeur Laguesse,59045 LILLE Cédex. Article available at http://www.kmae-journal.org or http://dx.doi.org/10. 1051/kmae:1980012 Cette propriété, à laquelle on a rattaché récemment celle d'inhiber la formation de brouillards, a suscité de nombreuses études sur les propriétés physiques de ces films (DOWNING et al, 1957 ;MANSFIELD, 1959 ;GOODRICH, 1962 ;KANWISHER, 1963 ;SADA et al, 1967 ;SCHOOLEY et al, 1971 ;GARRET, 1972 ;LISS, 1973).…”