Download or read book The Polymerization of Isoprene with Sec butyllithium in Hexane written by J. E. L. Roovers and published by . This book was released on 1968 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The polymerization of isoprene in n-hexane, initiated by sec-butyllithium, has been investigated with particular emphasis on the initiation step. The mechanism of chain initiation appears to be quite different from that previously observed in benzene and involves direct attack of sec-butyllithium tetramers on isoprene. The effect of lithium t-butoxide has been investigated and found to accelerate the initiation rate but to depress the propagation rate. Some experiments were carried out to determine the rate of intermolecular exchange between sec-butyllithium and polyisoprenyllithium. (Author).
Download or read book Batch Polymerization of Isoprene in N hexane by N butyllithium Initiation written by Raymond Eugene Porter and published by . This book was released on 1972 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stereospecific Polymerization of Isoprene written by Elena Ceausescu and published by Elsevier. This book was released on 2013-10-22 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stereospecific Polymerization of Isoprene, a doctoral dissertation by Dr. Elena Ceausescu, is a study of the synthesis of cis-l, 4-polyisoprene rubber, an elastomer of synthetic rubber whose structure and properties are similar to that of natural rubber. This elastomer is primarily used in the manufacture of tires, belts, hoses, matting, flooring, dampeners, and other synthetic rubber goods. The book is organized into two parts. Part I, the Ph.D. thesis, focuses on the explanation and exposition of the polymerization reaction; properties of the polymer; and certain theoretical aspects related to the polymer’s reaction mechanism and kinetics. Part II presents data derived from an extensive variety of experiments and tests intended to serve as a basis for the industrial production of cis-l, 4-polyisoprene rubber. The text will be an interesting book for materials engineers, industrial engineers, chemists, and science students engaged in the study of polymers.
Download or read book Anionic Polymerization written by Henry Hsieh and published by CRC Press. This book was released on 1996-03-15 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work introduces the basic theories and experimental methods of anionic polymerization as well as the synthesis, analysis and characteristics of anionic polymerized products. It details the creation of linear and branched polymers, random and block copolymers, graft and macromonomers, and many other substances. The work emphasizes the relationship between fundamental principles and commercial applications.;College or university bookstores may purchase five or more copies at a special student price, available on request from Marcel Dekker, Inc.
Download or read book Stereospecific Polymerization of Isoprene written by Elena Ceaușescu and published by . This book was released on 1983 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanisms of Ionic Polymerization written by B.L. Erusalimskii and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last twenty years the literature on the processes of ionic polymerization has reached such a level that there is not a single question which is not covered by the information contained in the many monographs, reference books, and textbooks in this field. It is easy for the interested reader to find sources for in-depth study, for a superficial acquaintance with the fundamentals of the subject or with the general features of these processes. At the same time the field is being continually enriched by new facts which have not only broadened the data base but which influence existing concepts on the mechanisms of these reactions. Such influences often touch the very foundations of these concepts, i. e. , they go beyond simple descriptions of the structure of the pre-reaction states or earlier schemes. It is therefore appropriate to attempt a critical appraisal of the modern views on the mechanisms of formation of macro molecules in ionic systems which envisages, so far as is possible, the differentiating of fundamental and hypothetical conclusions or concepts. With this in mind we have preferred to address ourselves to the reader who is already quite well acquainted with the general litera ture. This has allowed us to dispense with detailed introductions to the questions discussed and to limit ourselves to brief comments on the fundamentals of the subject.
Download or read book Anionic Alkyllithium Initiated Polymerization of Isoprene in Continuous Stirred Tank Reactors written by Abu Ahmad and published by . This book was released on 1975 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anionic Polymerization of Isoprene written by Denis J. Worsfold and published by . This book was released on 1964 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The polymerization of isoprene with butyllithium in cyclohexane has been studied. The initiation reaction was found to be complex; plots of conversion of butyllithium against time are sigmoidal. The order with respect to the initiator was found to be between one-half and one. The order of the isolated propagation reaction in polyisoprenyllithium was found to be one-quarter and was correlated with a fourfold association of active chain ends determined by dilute solution light-scattering measurements. The major effect of tetrahydrofuran on the reaction was the great increase of the initiation rate. The kinetic order changes slowly with the addition of small amounts of tetrahydrofuran, suggesting that the aggregates are broken down with difficulty. The microstructure of the polymer has been determined by n.m.r measurements and shows a steady transition from a largely 1:4 to a largely 3:4 structure as the polarity of the solvent is increased by the addition of tetrahydrofuran. (Author).
Download or read book Non Radical Polymerisation written by R.G. Compton and published by Elsevier. This book was released on 1976-01-15 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anionic polymerization of olefins / S. Bywater -- Kinetics of homogeneous cationic polymerization / A. Ledwith, D.C. Sherrington -- Kinetics of polymerization initiated by Ziegler-Natta and related catalysts / W. Cooper -- Polymerization of cyclic ethers and sulphides / P. Dreyfuss, M.P. Dreyfuss -- Kinetics of aldehyde polymerization / Otto Vogl -- Lactams / J. Šebenda -- The kinetics of polycondensation reactions / J.H. Saunders, F. Dobinson -- The polymerization of N-carboxy-[alpha]-amino acid anhydrides / C.H. Bamford, H. Block.
Download or read book Polymerization of Isoprene by Lithium Alkyls in Ether Solvents written by James Franklin Kenney and published by . This book was released on 1964 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NRCL written by National Research Council Canada and published by . This book was released on 1970 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer Science A Comprehensive Reference written by and published by Newnes. This book was released on 2012-12-05 with total page 7752 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress in polymer science is revealed in the chapters of Polymer Science: A Comprehensive Reference, Ten Volume Set. In Volume 1, this is reflected in the improved understanding of the properties of polymers in solution, in bulk and in confined situations such as in thin films. Volume 2 addresses new characterization techniques, such as high resolution optical microscopy, scanning probe microscopy and other procedures for surface and interface characterization. Volume 3 presents the great progress achieved in precise synthetic polymerization techniques for vinyl monomers to control macromolecular architecture: the development of metallocene and post-metallocene catalysis for olefin polymerization, new ionic polymerization procedures, and atom transfer radical polymerization, nitroxide mediated polymerization, and reversible addition-fragmentation chain transfer systems as the most often used controlled/living radical polymerization methods. Volume 4 is devoted to kinetics, mechanisms and applications of ring opening polymerization of heterocyclic monomers and cycloolefins (ROMP), as well as to various less common polymerization techniques. Polycondensation and non-chain polymerizations, including dendrimer synthesis and various "click" procedures, are covered in Volume 5. Volume 6 focuses on several aspects of controlled macromolecular architectures and soft nano-objects including hybrids and bioconjugates. Many of the achievements would have not been possible without new characterization techniques like AFM that allowed direct imaging of single molecules and nano-objects with a precision available only recently. An entirely new aspect in polymer science is based on the combination of bottom-up methods such as polymer synthesis and molecularly programmed self-assembly with top-down structuring such as lithography and surface templating, as presented in Volume 7. It encompasses polymer and nanoparticle assembly in bulk and under confined conditions or influenced by an external field, including thin films, inorganic-organic hybrids, or nanofibers. Volume 8 expands these concepts focusing on applications in advanced technologies, e.g. in electronic industry and centers on combination with top down approach and functional properties like conductivity. Another type of functionality that is of rapidly increasing importance in polymer science is introduced in volume 9. It deals with various aspects of polymers in biology and medicine, including the response of living cells and tissue to the contact with biofunctional particles and surfaces. The last volume is devoted to the scope and potential provided by environmentally benign and green polymers, as well as energy-related polymers. They discuss new technologies needed for a sustainable economy in our world of limited resources. Provides broad and in-depth coverage of all aspects of polymer science from synthesis/polymerization, properties, and characterization methods and techniques to nanostructures, sustainability and energy, and biomedical uses of polymers Provides a definitive source for those entering or researching in this area by integrating the multidisciplinary aspects of the science into one unique, up-to-date reference work Electronic version has complete cross-referencing and multi-media components Volume editors are world experts in their field (including a Nobel Prize winner)
Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1966 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of Papers written by and published by . This book was released on 1989 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Nanostructured Materials and Nanotechnology written by Hari Singh Nalwa and published by Academic Press. This book was released on 2000 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nanostructured materials is one of the hottest and fastest growing areas in today's materials science field, along with the related field of solid state physics. Nanostructured materials and their based technologies have opened up exciting new possibilites for future applications in a number of areas including aerospace, automotive, x-ray technology, batteries, sensors, color imaging, printing, computer chips, medical implants, pharmacy, and cosmetics. The ability to change properties on the atomic level promises a revolution in many realms of science and technology. Thus, this book details the high level of activity and significant findings are available for those involved in research and development in the field. It also covers industrial findings and corporate support. This five-volume set summarizes fundamentals of nano-science in a comprehensive way. The contributors enlisted by the editor are at elite institutions worldwide. Key Features * Provides comprehensive coverage of the dominant technology of the 21st century * Written by 127 authors from 16 countries, making this truly international * First and only reference to cover all aspects of nanostructured materials and nanotechnology" -- OCLC.
Download or read book Handbook of Nanostructured Materials and Nanotechnology Five Volume Set written by Hari Singh Nalwa and published by Academic Press. This book was released on 1999-10-29 with total page 3593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials is one of the hottest and fastest growing areas in today's materials science field, along with the related field of solid state physics. Nanostructured materials and their based technologies have opened up exciting new possibilites for future applications in a number of areas including aerospace, automotive, x-ray technology, batteries, sensors, color imaging, printing, computer chips, medical implants, pharmacy, and cosmetics. The ability to change properties on the atomic level promises a revolution in many realms of science and technology. Thus, this book details the high level of activity and significant findings are available for those involved in research and development in the field. It also covers industrial findings and corporate support. This five-volume set summarizes fundamentals of nano-science in a comprehensive way. The contributors enlisted by the editor are at elite institutions worldwide. Key Features * Provides comprehensive coverage of the dominant technology of the 21st century * Written by 127 authors from 16 countries, making this truly international * First and only reference to cover all aspects of nanostructured materials and nanotechnology
Download or read book The Chemistry of Lithium Sodium Potassium Rubidium Cesium and Francium written by William A. Hart and published by Elsevier. This book was released on 2013-10-22 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry of Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium studies the physical and chemical properties of the elements listed in the title, including their chemical compounds and reactions. This book first features lithium, including its characterization, metals, and compounds. This topic is followed by discussions on the remaining featured elements in this text, encompassing their discovery and history, occurrence and distribution, and production. Then, this text presents the chemistry and chemical properties of the elements, specifically discussing topics such as the reactions of the metals, intermetallic compounds, hydrides, halides, cyanides and cyanates, and oxides and peroxides. The last two chapters examine biological activity and analytical chemistry of the elements. This book will be valuable to students and experts in the field of chemistry, as well as those in related fields.
