Rosen, Milton J. Surfactants and interfacial phenomena / Milton J. Rosen. – 3rd ed. p. cm. Includes bibliographical references and index. ISBN 1. Now in its fourth edition, Surfactants and Interfacial Phenomena explains why and how surfactants operate in interfacial processes (such as. This book is the premier text on the properties and applications of surfactants. The third edition is completely updated and revised, including.

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Interfacial Phenomena. ESS Lecture. Fall Surfactant Structures. • Surfactants possess a characteristic chemical structure that consists of. – Molecular. SURFACTANTS AND. INTERFACIAL PHENOMENA. THIRD EDITION. Milton J. Rosen. Surfactant Research Institute. Brooklyn College. The City University of. Surfactants and Interfacial Phenomena, 2nd ed. M. J. Rosen. Wiley-Interscience. New York. , pp. xv + , $ As the title suggests, the emphasis in this.

The obtained results In addition, a detailed investigation in Figure 3 revealed demonstrated in Figure 5 revealed that as the temperature that as the temperature increases, the required time to reach increases from to K, the IFT of IL solution and the equilibrium IFT decreases.

This observed trend can crude oil increases from 2.

Interfacial Phenomena

So, as the temperature increases, the reduction of IFT and increase of diffusion mass transfer in these layers lead to the easier migration of surfactants from bulk phase continues phase to the oil drop phase dispersed phase. So, the rate of mass transfer between bulk phase and oil drop phase increases, consequently less time will be required for reaching the equilibrium IFT.

In addition, when the oil drop is injected through the rotating bulk phase in the spinning drop instru- ment, due to the temperature difference between the bulk phase and oil drop, a temperature gradient will be introduced, which leads to the convective mass transfer.

On the other hand, since, as aforementioned, one of the possible effective parameters on the occurrence of the Marangoni effect is the temperature gradient in the system. It is possible to consider the Marangoni effect as an effective mechanism accelerates the equilibrium in the system, consequently the DIFT becomes rapidly constant as the temperature increases. Similar to the previous section, the IL solution with concentration of ppm was used to exam- ine the effect of the rotational speed on the IFT of the used IL.

In other words, low concentration of surfactant may lead to lack of concentration for mass transfer between the bulk phase and oil drop phase. In this direction, four different IFT measurements at different rotational speed of , , , and rpm, while the temperature was kept constant at temperature of K, were performed.

A close examination on the results in Figure 6 clearly illustrated that the higher rotational speed leads to faster equilibrium of IFT under the studied system. This observed trend can be related to the fact that as the rotational speed increases, the convective mass transfer FIG. Effect of rotation on the equilibrium IFT of IL solution helps to the mass transfer through the diffusion mechanism; and crude oil system.

In other words, in general there are two different mechanisms during the mass transfer of surfactants from the bulk phase measure the IFT of IL solution with concentration of into the oil drop phase, namely, diffusion and interfacial ppm while the temperature was held constant at convection. In a quiescent liquid—liquid system, mass trans- K. Since in the previous section, the required time of fer usually occurred by diffusion, while in the nonquiescent equilibrium IFT for IL solution with concentration of system convective interfacial convective mass transfer ppm and crude oil system was obtained about sec- appears, which enhances the mass transfer.

Based on this onds, the IFT measurements in this section was performed fact, since the under investigated system is accompanied with duration of seconds to ensure the equilibrium in by a rotation, it experiences higher mass transfer rate and one of the used methods has been achieved.

The obtained faster equilibrium as the rotational speed increases. This observed behavior can be rises from the fact that in the pendant drop method, the dominant mechanism for mass transfer is diffusion; while in the spinning drop method, mass transfer by diffusion is accompanied by convective mass transfer due to the rotational type of measurements which enhances the mass transfer rate.

In the present study, the capability of an IL named [C18mim][Cl] as a surfactant was investigated. In this regard, the effect of the IL concentration prepared in distilled water was examined. Also, possible mechanistic Surkalo, H. Shah and R. Based on the obtained results and applied concen- [16] Reed, R.

Shah can be considered as an applicable reducing agent and R. Schechter chap. Paper SPE The results revealed that the equi- [18] Healy, R.

AIME, — This is possibly SPEJ, — The observations [21] Karsa, D. Karsa; Cambridge: Royal Society of Chemistry. Biosphere, 21— Colloid Interface Sci. A, — A, [2] Myers, D.

Theoretical and Applied Aspects vol. Mittal and E. Plenum, pp. Perspectives for Pollution Prevention chap. Weijnen and A. Kluwer, pp. Lecture Notes in Physics , edited by T. Sorensen; [34] Holbrey, J. Pitner, W. Phenomena, edited by J.

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Braun; p. Science Institute.

Series C. Nicolis and F. Baras; Berlin: Springer-Verlag. Berlin , 9. Sanfeld, A. Data, — Hewitt, F. Mavinger, and R. Ririic; London: Franceschi, E. Fuels, — Nabipour, M.

First published: Print ISBN: About this book This book is the premier text on the properties and applications of surfactants. The third edition is completely updated and revised, including new information on gemini surfactants a new type of powerful surfactant , superspreading or superwetting by aqueous surfactant solutions of highly hydrophobic surfaces important in agricultural applications , and dynamic surface tension an important interfacial property not covered in the first two editions.

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Interfacial Phenomena

Old Password.On the other hand, it has been accepted that the presence of surfactants at liquid—liquid interfaces prevent mass transfer by suppressing interfacial convection[49] or by caus- ing a barrier effect.

Nicolis and F.

Baras; Berlin: Springer-Verlag. Please check your email for instructions on resetting your password. Email or Customer ID. Current market and forecast[ edit ] The annual global production of surfactants was 13 million tonnes in Series C.