By K. L. Mittal (Eds.)
content material: Thermodynamics of adsorption and interparticle forces / D.H. Everett and C.J. Radke --
Configurational habit of remoted chain molecules adsorbed from athermal recommendations / M. Lal, M.A. Turpin, K.A. Richardson, and D. Spencer --
Equilibrium movie strain on a flat, low-energy stable / Robert J. reliable --
Binding of solute and solvent on the interface and the gibbs floor extra / D.K. Chattoraj and S.P. Moulik --
Mechanism of sulfonate adsorption on the silver iodide-solution interface / ok. Osseo-Asare, D.W. Fuerstenau, and R.H. Ottewill --
Adsorption of dyes on water-swollen and non-swelling strong substrates / S.R. Sivaraja Iyer, A.S. Chanekar, and G. Srinivasan --
Adsorption of polystyrene on graphon from toluene / Victor ok. Dunn and Robert D. Vold --
Adsorption of ionic surfactants to porous glass : the exclusion of micelles and different solutes from adsorbed layers and the matter of adsorption maxima / Pasupati Mukerjee and Aroonsri Anavil --
DTA learn of water in porous glass / Chaur-Sun Ling and W. Drost-Hansen --
Monolayer experiences. five, Styrene-acrylic acid movies on aqueous substrates / Erwin Sheppard and Noubar Tcheurekdjian --
interplay of calcium ions with the combined monolayers of stearic acid and stearyl alcohol at pH 8.8 / D.O. Shah --
touch angles in Newton-Black cleaning soap motion pictures drawn from strategies containing sodium dodecyl sulphate and electrolyte / J.A. De Feijter and A. Vrij --
Stratification in unfastened liquid motion pictures / J.W. Keuskamp and J. Lyklema --
floor chemical homes of hugely fluorinated polymers / Marianne ok. Bernett and W.A. Zisman --
influence of floor oxygen complexes on floor habit of carbons / Balwant Rai Puri --
floor houses of nickel hydroxide ahead of and after dehydration to nickel oxide / M. subject, F.J. Micale, C.L. Cronan, H. Leidheiser, Jr., and A.C. Zettlemoyer --
The dimension of low interfacial rigidity through the spinning drop strategy / J.L. Cayias, R.S. Schechter, and W.H. Wade --
Adhesion of ice frozen from dilute electrolyte ideas / H.H.G. Jellinek --
Mechanism of olfaction defined utilizing interfacial stress measurements / D.V. Rathnamma --
function of double interactions and spreading strain in particulate soil removing / Hermann Lange.
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Extra resources for Adsorption at Interfaces
ACS Symposium Series; American Chemical Society: Washington, DC, 1975. 3. Equilibrium GOOD 31 Film Pressure Thus, we can write as a reasonable approximation, f o r the entropy of transfer per mole between l i q u i d and adsorbed state: N k t l n ^ J - - ln(ff)] (4) a where Ν i s the Avogadro number. For symmetrical ad sorbate molecules, the l a s t term i n the brackets i s omitted. Volume changes are small, i n transfer from l i q u i d to adsorbed state, so we may estimate the enthalpy change as follows: The p a r t i a l molal energy change, i n transfer from the pure l i q u i d to the adsorbed state, i s : AS = - Δϋ « AU V - ÂÏÏ V Here, AU i s the molar energy of vaporization, and AU the p a r t i a l molal energy of adsorption from the vapor.
From something near 4, to about 3. Polyethylene i s treated as extended (CH2) chains. The r e s u l t s are given i n Table I I I . It should be emphasized that these computations are f o r water on i d e a l Teflon TFE and polymethylene surfaces, i . e . ; ACS Symposium Series; American Chemical Society: Washington, DC, 1975. 38 ADSORPTION AT INTERFACES Table I I I . Estimates of f r a c t i o n a l coverage and of equilibrium f i l m pressure f o r water on a fluorocarbon s o l i d and on a polymetheylene surface, both assumed to be smooth and homogeneous.
We estimate the uncertainty here, as no worse than 50% i n ^i\l^22 which means an uncertainty that i s less than 25% a f t e r the square root i s extracted. The q u a l i t a t i v e conclusion that x and rr are n e g l i g i b l e , f o r H2O on Teflon and polyethylene, are not s e r i o u s l y changed by allowance for such uncertainty, because A U i s so large, f o r water, and as a consequence, the computed values of x and ΊΤ are so small. In summary, the approximations of t h i s theory are probably not serious; and indeed, the majority of the approximations contribute errors i n the d i r e c t i o n of too high an estimate of x and ττ · It would take very much greater c o r r e c t i o l i k e l y to appear, i the q u a l i t a t i v e conclusion that x and ττ are generally small for l i q u i d s that b o i l above room temperature.