Application And Characterization Of Surfactants

Application and Characterization of Surfactants PDF
Author: Reza Najjar
Publisher: BoD – Books on Demand
ISBN: 953513325X
Size: 69.14 MB
Format: PDF, ePub, Docs
Category : Science
Languages : en
Pages : 316
View: 2831

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Application And Characterization Of Surfactants

by Reza Najjar, Application And Characterization Of Surfactants Books available in PDF, EPUB, Mobi Format. Download Application And Characterization Of Surfactants books, The surfactants are among the materials that have a significant importance in everyday life of human. The rapid growth in science and technology has opened new horizons in a very wide range, in which the surfactants play a major and vital role. Hence, the increasing number of applications as well as arising environmental issues has made this relatively old topic still a hot research theme. In the first section of this book, some of the applications of surfactants in various fields such as biology and petroleum industry, as well as their environmental effects, are described. In Section 2 some experimental techniques used for characterization of the surfactants have been discussed.


Conference Book Of Papers

Conference Book of Papers PDF
Author:
Publisher: iSmithers Rapra Publishing
ISBN: 9781859570661
Size: 61.94 MB
Format: PDF, ePub, Docs
Category :
Languages : en
Pages :
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Conference Book Of Papers

by , Conference Book Of Papers Books available in PDF, EPUB, Mobi Format. Download Conference Book Of Papers books,


Utech Asia 97

Utech Asia 97 PDF
Author:
Publisher: iSmithers Rapra Publishing
ISBN: 9781859570906
Size: 67.64 MB
Format: PDF, ePub, Docs
Category : Polyurethanes
Languages : en
Pages : 442
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Utech Asia 97

by , Utech Asia 97 Books available in PDF, EPUB, Mobi Format. Download Utech Asia 97 books,


Synthesis And Characterization Of Nanoparticles

Synthesis and Characterization of Nanoparticles PDF
Author: Stephan Dankesreiter
Publisher: diplom.de
ISBN: 3836638959
Size: 49.84 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 171
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Synthesis And Characterization Of Nanoparticles

by Stephan Dankesreiter, Synthesis And Characterization Of Nanoparticles Books available in PDF, EPUB, Mobi Format. Download Synthesis And Characterization Of Nanoparticles books, Inhaltsangabe:Introduction: The development of small and smallest particle is one of today s key features in modern science. The goal is to form materials with improved properties than their classical ancestors with just a fractional amount of raw material. Another key feature of nanoparticles is their different, and sometimes unexpected, behavior concerning reactivity, compared with their bulk materials. Because of this, nanoparticles have a wide range of applications, especially in the field of catalysis. Here, characteristics of nanoparticles - more edges, corners, defects or oxygen vacancies are used to obtain a high performance of the catalysts. Nanoscaled particles also exhibit larger surface area and higher metal dispersion, which further contributes to the catalytic possibilities. To gain such particles, two different pathways are given: first, there is the so-called top down pathway, considered as further developments of micro technology, where physical preparation methods like lithography are used. The second way is the bottom up method where self-assembling systems, formed by surfactants, are used. Concerning gold nanoparticles, it is reported that the use of C16TAB at specified conditions, gives gold nanorods with a sharp size-distribution because the direction of growth is predetermined. Being a cationic surfactant, C16TAB affects the electrochemical potentials and introduces bromide-ions as an additional species to the reaction. To achieve gold nanoparticles from aqueous HAuCl4-solutions, the above-mentioned method needs a separate reducing agent such as ascorbic acid (Asc0), NaBH4 or N2H4. A way of synthesizing spherical gold nanoparticles is the use of Nd:YAG laser with a salt induced agglomeration. By modifying the formulation of the salt solution, different sizes are obtained. This way of synthesis, a combination of physical top-down and self-assembling bottom-up processes, can be modified by adding surfactants, like PEG, to optimize size distribution and physical characteristics, like UV-Vis absorption. This method is an elegant way of synthesis; however, problems may occur by functionalizing the particles, because of a high salt content. Here, a high influence of purity, concentration and composition to the size and shape of gold nanoparticles might be given. Therefore, a route of synthesis is needed, which shows high efficiency in producing gold nanoparticles and in stabilizing them with a manageable amount of [...]


Microbiotechnology Based Surfactants And Their Applications

Microbiotechnology Based Surfactants and Their Applications PDF
Author: Pattanathu K.S.M. Rahman
Publisher: Frontiers Media SA
ISBN: 2889197522
Size: 21.35 MB
Format: PDF, ePub, Docs
Category :
Languages : en
Pages :
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Microbiotechnology Based Surfactants And Their Applications

by Pattanathu K.S.M. Rahman, Microbiotechnology Based Surfactants And Their Applications Books available in PDF, EPUB, Mobi Format. Download Microbiotechnology Based Surfactants And Their Applications books, Biosurfactants are structurally diverse group of bioactive molecules produced by a variety of microorganisms. They are secondary metabolites that accumulate at interfaces, reduce surface tension and form micellar aggregates. This research topic describes few novel microbial strains with a focus on increasing our understanding of genetics, physiology, regulation of biosurfactant production and their commercial potentials. A major stumbling block in the commercialization of biosurfactants is their high cost of production. Many factors play a significant role in making the process cost-effective and the most important one being the use of low-cost substrates such as agricultural residues for the production of biosurfactants. With the stringent government regulations coming into effect in favor of production and usage of the bio-based surfactants, many new companies aim to commercialize technologies used for the production of biosurfactants and to bring down costs. This Research Topic covers a compilation of original research articles, reviews and research commentary submitted by researchers enthusiastically working in the field of biosurfactants and highlights recent advances in our knowledge of the biosurfactants and understanding of the biochemical and molecular mechanisms involved in their production, scale-up and industrial applications. Apart from their diverse applications in the field of bioremediation, enhanced oil recovery, cosmetic, food and medical industries, biosurfactants can also boast off their unique eco-friendly nature to attract consumers and give the chemical surfactants a tough competition in the global market. This biosurfactant focused research topic aims to summarize the current achievements and explore the direction of development for the future generation of biosurfactants and bioemulsifiers. Some of the biosurfactant optimization processes presented are well-structured and already have a well-established research community. We wish to stimulate on-going discussions at the level of the biosurfactant production including common challenges in the process development, novel organisms and new feedstock and technologies for maximum benefit, key features of next generation biosurfactants and bioemulsifiers. We have compiled the research outputs of international leaders in the filed of biosurfactant particularly on the development of a state-of-the-art and highly-efficient process platform.


Stability And Characterization Of Protein And Peptide Drugs

Stability and Characterization of Protein and Peptide Drugs PDF
Author: Y. John Wang
Publisher: Springer Science & Business Media
ISBN: 9780306443657
Size: 26.66 MB
Format: PDF, Docs
Category : Medical
Languages : en
Pages : 353
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Stability And Characterization Of Protein And Peptide Drugs

by Y. John Wang, Stability And Characterization Of Protein And Peptide Drugs Books available in PDF, EPUB, Mobi Format. Download Stability And Characterization Of Protein And Peptide Drugs books, This is the first volume to make available specific case histories of therapeutic proteins and peptides that have been marketed or are currently under clinical testing. The editors have selected a wide range of molecules derived from monoclonal antibodies, recombinant DNA, and natural and chemical sources to provide formulation scientists with practical examples of the deveopment of pharmaceutical products.


Characterization Of Porous Solids Vi

Characterization of Porous Solids VI PDF
Author:
Publisher: Elsevier
ISBN: 9780080528915
Size: 30.99 MB
Format: PDF, ePub
Category : Science
Languages : en
Pages : 808
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Characterization Of Porous Solids Vi

by , Characterization Of Porous Solids Vi Books available in PDF, EPUB, Mobi Format. Download Characterization Of Porous Solids Vi books, This book contains 99 of the papers that were presented at the 6th in the series of Symposia on Characterization of Porous Solids held in Alicante, Spain, May 2002. Written by leading international specialists in the subject, the contributions represent an up-to-date and authoritative account of recent developments around the world in the major methods used to characterize porous solids. The book is a useful work of reference for anyone interested in characterizing porous solids, such as MCM-41 mesoporous materials, pillared clays, etc. Papers on pore structure determination using gas adsorption feature strongly, together with papers on small angle scattering methods, mercury porosimetry, microcalorimetry, scanning probe microscopies, and image analysis.


Ionic Liquid Based Surfactant Science

Ionic Liquid Based Surfactant Science PDF
Author: Bidyut K. Paul
Publisher: John Wiley & Sons
ISBN: 1118834194
Size: 57.71 MB
Format: PDF
Category : Science
Languages : en
Pages : 576
View: 4099

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Ionic Liquid Based Surfactant Science

by Bidyut K. Paul, Ionic Liquid Based Surfactant Science Books available in PDF, EPUB, Mobi Format. Download Ionic Liquid Based Surfactant Science books, This volume will be summarized on the basis of the topics of Ionic Liquids in the form of chapters and sections. It would be emphasized on the synthesis of ILs of different types, and stabilization of amphiphilic self-assemblies in conventional and newly developed ILs to reveal formulation, physicochemical properties, microstructures, internal dynamics, thermodynamics as well as new possible applications. It covers: Topics of ionic liquid assisted micelles and microemulsions in relation to their fundamental characteristics and theories Development bio-ionic liquids or greener, environment-friendly solvents, and manifold interesting and promising applications of ionic liquid based micelles and micremulsions


Characterization Of Liquids Nano And Microparticulates And Porous Bodies Using Ultrasound

Characterization of Liquids  Nano  and Microparticulates  and Porous Bodies using Ultrasound PDF
Author: Andrei S. Dukhin
Publisher: Elsevier
ISBN: 9780444536228
Size: 57.82 MB
Format: PDF, Docs
Category : Technology & Engineering
Languages : en
Pages : 518
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Characterization Of Liquids Nano And Microparticulates And Porous Bodies Using Ultrasound

by Andrei S. Dukhin, Characterization Of Liquids Nano And Microparticulates And Porous Bodies Using Ultrasound Books available in PDF, EPUB, Mobi Format. Download Characterization Of Liquids Nano And Microparticulates And Porous Bodies Using Ultrasound books, Two key words define the scope of this book: 'ultrasound' and 'colloids'. Historically, there has been little real communication between practitioners in these two fields. Although there is a large body of literature devoted to ultrasound phenomenon in colloids, there is little recognition that such phenomena may be of real importance for both the development and applications of colloid science. On the other side, colloid scientists have not embraced acoustics as an important tool for characterizing colloids. The lack of any serious dialogue between these scientific fields is the biggest motivation behind this book. - Covers in detail this multidisciplinary field combining acoustics, electroacoustics, colloid science, analytical chemistry and rheology - Provides a bibliography with more than 1,000 references - Presents theories and their experimental verification, as well as analysis of the methods and hardware pertaining to applications such as pharmaceuticals, ceramics, and polymers