Download or read book Theoretical and Experimental Studies of Micellization and Phase Behavior of Aqueous Solutions of Single and Mixed Surfactants written by Sudhakar Puvvada and published by . This book was released on 1992 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mixed Surfactant Systems written by Masahiko Abe and published by CRC Press. This book was released on 2004-12-22 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and expanded throughout, Mixed Surfactant Systems, Second Edition surveys the latest results, newest experimental perspectives, and theoretical investigations of properties, behavior, and techniques applicable to mixed surfactant systems. This important book elucidates core theoretical notions while summarizing results of
Download or read book Theoretical and Simulations based Modeling of Micellization in Linear and Branched Surfactant Systems written by Jonathan David Mendenhall and published by . This book was released on 2012 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surfactants are chemically-heterogeneous molecules possessing hydrophilic (head) and hydrophobic (tail) moieties. This dual nature of surfactants leads to interesting phase behavior in aqueous solution as a function of surfactant concentration, including: (i) formation of surfactant monolayers at surfaces and interfaces, and (ii) self-assembly into finite aggregates (micelles) in the bulk solution beyond the critical micelle concentration (cmc). This concentration-dependent phase behavior induces changes in solution properties. For example, the surface activity of surfactants can decrease the surface tension, and self-assembly in bulk solution can lead to changes in viscosity, equivalent conductivity, solubilization capacity, and other bulk properties. These effects make surfactants quite attractive and unique for use in product formulations, where they are utilized as detergents, dispersants, emulsifiers, solubilizers, surface and interfacial tension modifiers, and in other contexts. The specific chemical structure of the surfactant head and tail is essential in determining the overall performance properties of a surfactant in aqueous media. The surfactant tail drives the self-assembly process through the hydrophobic effect, while the surfactant head imparts a certain extent of solubility to the surfactant in aqueous solution through preferential interactions with the hydrogen-bonding network of water. The interplay between these two effects gives rise to the particular phase diagram of a surfactant, including the specific cmc at which micelles begin to form. In addition to serving as a quantitative indicator of micelle formation, the cmc represents a limit to surface monolayer formation, and hence to surface and interfacial tension reduction, because surfactant adsorption at interfaces remains approximately constant beyond the cmc. In addition, the cmc represents the onset of changes in bulk solution properties. This Thesis is concerned with the prediction of cmc's and other micellization properties for a variety of linear and branched surfactant chemical architectures which are commonly encountered in practice. Single-component surfactant solutions are investigated, in order to clarify the specific contributions of the surfactant head and tail to the free energy of micellization, a quantity which determines the cmc and all other aspects of micellization. First, a molecular-thermodynamic (MT) theory is presented which makes use of bulk-phase thermodynamics and a phenomenological thought process to describe the energetics related to the formation of a micelle from its constituent surfactant monomers. Second, a combined computer-simulation/molecular-thermodynamic (CSMT) framework is discussed which provides a more detailed quantification of the hydrophobic effect using molecular dynamics simulations. A novel computational strategy to identify surfactant head and tail using an iterative dividing surface approach, along with simulated micelle results, is proposed. Force-field development for novel surfactant structures is also discussed. Third, a statistical-thermodynamic, single-chain, mean-field theory for linear and branched tail packing is formulated, which enables quantification of the specific energetic penalties related to confinement and constraint of surfactant tails within micelles. Finally, these theoretical and simulations-based strategies are used to predict the micellization behavior of 55 linear surfactants and 28 branched surfactants. Critical micelle concentration and optimal micelle properties are reported and compared with experiment, demonstrating good agreement across a range of surfactant head and tail types. In particular, the CSMT framework is found to provide improved agreement with experimental cmc's for the branched surfactants considered.
Download or read book Mixed Surfactant Systems written by Paul M. Holland and published by . This book was released on 1992 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a broad survey of the properties, behavior, and modeling of mixed surfactant systems, including mixed micellar solutions, phenomena at interfaces, phase behavior, and mixtures with unusual surfactant types. Covers chemical reactions in mixed micelles, approaches to molecular modeling of mixed surfactant aggregates, and new experimental techniques for studying mixed micelles and adsorption on surfaces. Features contributions from leading specialists in colloid and surface science, including Robert S. Schechter, John F. Scamehorn, Milton J. Rosen, Keizo Ogino, and Denver G. Hall.
Download or read book Solution Behavior of Surfactants written by K.L. Mittal and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: This and its companion Volume 2 comprise the proceedings of the International Symposium on "Solution Behavior of Surfactants - Theoretical and Applied Aspects" organized under the auspices of the 11th Northeast Regional Meeting of the American Chemical SociƯ ety held in Potsdam, N.Y., June 30-July 3, 1980. This Symposium reƯ presented the third event in the series of symposia dealing with the topic of surfactants in solution. The first Symposium was held in Albany, N.Y., in 1976 under the title "Micellization, SolubiliƯ zation and Microemulsions", 1 the proceedings of which have been docƯ umented in a two-volume set " The second was held under the title "~olution Chemistry of Surfactants" in 1978 in Knoxville, TN, an~ the proceedings of this event have also been properly chronicled " Apropos, the fourth biennial Symposium in, this series is entitled "International Symposium on Surfactants in Solution" (K.L. Mittal and B. Lindman, Cochairmen) and is scheduled to be held from June 27 to July 2, 1982 in Lund, Sweden. Since these biennial events have been very successful and important in bringing researchers with varied interests together and in stimulating interdisciplinary communication, so the plans are to continue these on a regular basis with a change in venue for each meeting.
Download or read book Micellization Solubilization and Microemulsions written by K. Mittal and published by Springer. This book was released on 1977-06 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume and its companion Volume 2 chronicle the proceed ings of the International Symposium on Micellization, Solubiliza tion, and t1icroemulsions held under the auspices of the Northeast Regional Meeting of the American Chemical Society in Albany, New York, August 8-11, 1976. The technical program consisted of 48 papers by 91 authors from twelve countries. The program was divided into six sessions, and Dr. Hartley delivered the Concluding Remarks. Subsequently, six more papers were contributed for the proceedings volumes with the result that these volumes contain 51 papers (three papers are not included for certain reasons) and are divided into seven parts. The first three parts are embodied in Volume 1 and the remaining four parts constitute Volume 2; each part is followed by a Discussion Section. Dr. Hartley's Concluding Remarks are in cluded in both volumes . . When the idea of arranging a symposium on micelles was broached to me, I accepted it without an iota of hesitation. I had two op tions: either to make it a one- or two-sessions symposium, or bring together the global community actively carrying out research in this area. I opted for the latter as the subject was very timely and I knew that it would elicit very enthusiastic response. In order to broaden the scope of the symposium, I suggested that the theme of the symposium should be Micellization. Solubilization and Microemulsions.
Download or read book The Aqueous Phase Behavior of Surfactants written by Robert G. Laughlin and published by . This book was released on 1994 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended for graduates and researchers in academia and industry working on surfactant science and technology, this book presents basic principles governing phase behaviour of surfactants, the relationship between phase behaviour and molecular structure, and ways this information can be applied.
Download or read book Surfactants in Solution written by Arun K. Chattopadhyay and published by CRC Press. This book was released on 2020-08-26 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains selected invited papers presented at the 10th International Symposium on Surfactants in Solution held in Caracas, Venezuela. The volume covers phase behaviour of monolayers, contact angle hysteresis, micellar relaxation, micellar catalyzed reactions, polymerization in microemulsions, polymer-surfactant complexation, asphaltenes, and more.
Download or read book Salt Effects on Micellization Micellar Growth and Phase Behavior of Aqueous Solutions of Nonionic Surfactants written by Maria Teresa Reyes Carale and published by . This book was released on 1993 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1991 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surfactants in Solution written by K.L. Mittal and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: This and its companion Volumes 2 and 3 document the proceed ings of the 4th International Symposium on Surfactants in Solution held in Lund, Sweden, June 27-July 2, 1982. This biennial event was christened as the 4th Symposium as this was a continuation of ear li er conferences dealing with surfactants held in 1976 (Albany) under the title "Micellization, Solubilization, and Microemulsions"; in 1978 (Knoxville) under the title "Solution Chemistry of Surfac tants"; and in 1980 (Potsdam) where it was dubbed as "Solution Be bavior of Surfactants: Theoretical and Applied Aspects:' The Pl02 3 ceedings of all these symposia have been properly chronicled. ', The Lund Symposium was bi lIed as "Surfactants in Solution" as both the aggregation and adsorption aspects of surfactants were covered, and furthermore we were interested in a general title which could be used for future conferences in this series. As these biennial events bave become a weIl recognized forum for bringing together researchers with varied interests in the arena of surfactants, so it is amply vindicated to continue these, and the next meeting is planned for July 9-13, 1984 in Bordeaux, France under the cochair manship of K.L. Mittal and P. Bothorel. The venue for 1986 is still open, although India, inter alia, is a good possibility. Apropos, we would be delighted to entertain suggestions regarding where and when these biennial symposia should be held in the future and you may direct your response to Kk~.
Download or read book Organized Solutions written by Stig Friberg and published by CRC Press. This book was released on 1992-07-21 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by top international experts in colloid and surface chemistry. Contains close to 750 literature references and nearly 400 useful figures, equations and tables.
Download or read book Solubilization in Surfactant Aggregates written by Sherril D. Christian and published by CRC Press. This book was released on 2020-08-26 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work covers topics ranging from fundamental studies of solubilization to practical technological applications of the phenomenon. It reviews the solubilization of organic materials into surfactant aggregates, including micelles, vesicles and admicelles. The book also details methods of measuring solubilization that utilize both classical and newer instrumental techniques. It is intended for physical, surface, colloid and surfactant chemists; chemical, environmental and civil engineers; and upper-level undergraduate and graduate students in these disciplines.
Download or read book Phase Behavior and Interfacial Tension Studies of Surfactant Systems written by Elias I. Franses and published by . This book was released on 1979 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research in Materials written by Massachusetts Institute of Technology and published by . This book was released on 1996 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Colloid and Interface Science written by Tharwat Tadros and published by Springer. This book was released on 2013-06-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative and comprehensive reference relevant to all scientists and engineers in the field. This encyclopedia not only helps chemistry, materials science and physics researchers to understand the principles, but also provides practicing engineers with the necessary information for implementing practical applications, such as Food and agrochemicals Polymers and ceramics Cosmetics and detergents Paints and coatings Pharmaceuticals and drug delivery In addition, the encyclopedia is an important reference for industrial chemists and chemical engineers faced with a multitude of industrial systems of a colloidal nature. As wide as the range of applications that colloid and interface science has is the range of scientific disciplines that contribute to research and development in this field. These encompass chemistry, physics, biology and mathematics as well as nanoscience and nanotechnology. The encyclopedia provides easy-to-digest information for meeting these interdisciplinary challenges. While providing numerous concise definitions of key terms, the encyclopedia also features more than forty in-depth essays on topics ranging from Agrochemical Formulations to Zeta Potential. All entries are cross-referenced and include selected references to original literature as well as synonyms.
Download or read book Recent Awards in Engineering written by and published by . This book was released on 1983 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
