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"Rosen, Milton J"
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Surfactants and interfacial phenomena
\"This book provides an easy-to-read, user-friendly resource for industrial chemists and a text for classroom use, and is an unparalleled tool for understanding and applying the latest information on surfactants. Problems are included at the end of each chapter to enhance the reader's understanding, along with many tables of data that are not compiled elsewhere. Only the minimum mathematics is used in the explanation of topics to make it easy-to-understand and very user friendly\"-- Source other than Library of Congress.
Book
An American rabbi in Korea : a chaplain's journey in the forgotten war
During the height of the Korean conflict, 1950-51, Orthodox Jewish chaplain Milton J. Rosen wrote 19 feature-length articles for Der Morgen Zhornal , a Yiddish daily in New York, documenting his wartime experiences as well as those of the servicemen under his care. Rosen was among those nearly caught in the Chinese entrapment of American and Allied forces in North Korea in late 1950, and some of his most poignant writing details the trying circumstances that faced both soldiers and civilians during that time. As chaplain, Rosen was able to offer a unique account of the American Jewish experience on the frontlines and in the United States military while also describing the impact of the American presence on Korean citizens and their culture. His interest in Korean attitudes toward Jews is also a significant theme within these articles. Stanley R. Rosen has translated his father's articles into English and provides background on Milton Rosen's military service before and after the Korean conflict. He presents an introductory overview of the war and includes helpful maps and photographs. The sum is a readable account of war and its turmoil from an astute and compassionate observer.
eBook
Surfactants and interfacial phenomena
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). * Clearly explains the mechanisms by which surfactants operate in interfacial processes * Uses a minimum of mathematics in explanation of topics, making it easy-to-understand and very user-friendly * Problems are included at the end of each chapter * Includes many tables of data as reference that are not compiled elsewhere * Milton J Rosen is an expert in the field of Surfactant research
eBook
Surface properties of N‐alkanoyl‐N‐methyl glucamines and related materials
The surface properties [effectiveness of surface tension reduction (γCMC) critical micelle concentration (CMC), efficiency of surface tension reduction (pC20), maximal surface excess concentration (Γmax), minimal area/molecule at the interface (Amin), and the (CMC/C20) ratio] of some well‐purified N‐alkanoyl‐N‐methyl glucamines and related polyol‐based N‐methyl amide‐type surfactants, having the structural formula RC(O)N(Me)CH2(CHOH)xCH2OH, where RC(O)=undecanoyl, lauroyl, tridecanoyl, myristoyl, and x=1,3, and 4, were investigated at 25°C in distilled water and 0.1 M NaCl. Water solubility of these compounds does not simply depend on the number of hydroxyl groups in the molecule but is associated with the balance between intermolecular hydrogen bonds and hydrogen bonds formed with water molecules. The fundamental interfacial properties, such as CMC and γCMC and two thermodynamic parameters, standard free energy of adsorption and standard free energy of micellization, were found to be significantly dependent on the hydrophobic acyl chain rather than on the number of CHOH groups in the hydrophilic moieties. By contrast, the practical performance properties were greatly dependent on the nature of the hydrophilic group. As a whole, these surfactants had desirable foaming properties and efficient wetting abilities. Furthermore, synergism in foaming and wetting abilities was observed in a binary mixture of these surfactants with an alkyloxyethylene sulfate.
Journal Article
Mechanism of the enhanced spreading of some mixtures of anionic and cationic hydrocarbon chain surfactants on a highly hydrophobic polyethylene surface
The objective of this investigation was to measure the interfacial properties and interactions among mixtures of different cationic and anionic surfactants at the hydrophobic solid/aqueous solution interface to explain the different spreading factors or behavior of the mixed surfactants on a highly hydrophobic polyethylene (PE) film. A synergistic effect in the spreading of the mixed surfactant solutions on the PE film was observed when the surfactants were added sequentially. Other interfacial phenomena related to this surfactant spreading, such as interaction parameters at the solid/liquid (S/L) and liquid/air (L/A) interfaces in the mixtures adsorbed at various interfaces and dynamic contact angles of the mixed surfactant solutions during the process of spreading on the PE substrate, were investigated to obtain insight into this enhanced spreading. All the interaction parameters were more negative than −20, indicating very strong interaction between these cationic and anionic surfactants. The interaction parameters at the S/L interface were more negative than at the L/A interface, showing that the attractive interaction at the S/L interface was stronger than at the L/A interface. The spreading was related to the difference in the interaction parameters at the S/L and L/A interfaces and to the dynamic contact angle.
Journal Article
The relationship of the environmental effect of surfactants to their interfacial properties
In an investigation of possible relationships between interfacial properties of surfactants and their environmental effect, using several anionic and nonionic surfactants, a linear correlation was found between the parameters, ΔG0ad/Amin, and rotifer toxicity. ΔG0ad is a standard free energy of adsorption at the air/aqueous solution interface, and Amin is the minimal hydrated cross‐sectional area of the surfactant molecule. Both quantities were evaluated from surface tension data. This correlation is much better than attempted correlations of the toxicity with the negative logarithm of the critical micelle concentration (−log CMC) or with ΔG0ad or Amin alone. The ΔG0ad/Amin correlation with rotifer toxicity is also better than the correlation with the analogous parameter, Δs|Gads0| Amin, obtained from adsorption isotherms of the surfactants on a solid immobilized membrane simulating a cell membrane. The data support our hypothesis that toxicity is determined both by adsorption tendency and ease of cell membrane penetration.
Journal Article
Surfactants and interfacial phenomena, Third edition
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). * Clearly explains the mechanisms by which surfactants operate in interfacial processes * Uses a minimum of mathematics in explanation of topics, making it easy-to-understand and very user-friendly * Problems are included at the end of each chapter * Includes many tables of data as reference that are not compiled elsewhere * Milton J Rosen is an expert in the field of Surfactant research
eBook
Surfactants and interfacial phenomena / Milton J. Rosen
\"Using a minimum of mathematics, this book clearly describes the properties and applications of surfactants. It explains the mechanisms by which these materials operate in interfacial processes such as foaming, wetting, emulsion formation, and detergency, and shows the correlations between a surfactant's chemical structure and its action.\" \"Surfactants and Interfacial Phenomena, Third Edition provides a resource for industrial chemists and a text for classroom use, and is a tool for understanding and applying the latest information on surfactants.\"--Jacket.
eBook
Letter to the Editor
Dear Editor, The article, \"Comparison of QSAR and QSPR Based Aquatic Toxicity for Mixed Surfactants,\" by V.Y. Joshi, M.M. Kadam and N.R. Sawant, J. Surfactants Detgts. 10 25-34 (2007), fails to refer to fundamental work published, starting in 1997, by my colleagues and myself that bears directly on their work: our discovery of the relationship between the pC^sub 20^/A^sub min^ and ΔG^sup 0^^sub ad^/A^sub min^ parameters and the toxicity parameter, -log EC^sub 50^ (or pEC^sub 50^), that the authors use in their article.
Journal Article