Download or read book Synth se et caract risation de mat riaux hybrides Polyur thane Polydimenthylsiloxane written by Frédéric Belva and published by . This book was released on 2005 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les " plastiques " ont été une révolution dans le domaine des matériaux. Ils occupent aujourd'hui une place primordiale dans tous les domaines et remplacent avantageusement les matériaux traditionnels tels que le métal, le bois ou le verre. En effet, ils allient, entre autres, facilité de mise en œuvre et de mise en forme, bonnes propriétés mécaniques, faible densité et coût modéré. Cependant ils présentent un désavantage : leur faible résistance à la chaleur et au feu. De plus, leur dégradation s'accompagne de dégagement de fumées toxiques. Cette faiblesse se révèle dramatique lors d'incendies d'immeubles en termes de pertes humaines. Les matériaux inorganiques, de leur côté, possèdent ces performances thermiques et de résistance au feu mais présentent très souvent des propriétés mécaniques médiocres qui interdisent leur usage. L'idée des matériaux hybrides organique-inorganique est d'associer ces deux familles en un seul nouveau matériau qui combinerait le meilleur des polymères (propriétés mécaniques) et le meilleur des matières inorganiques (propriétés thermiques). La matrice polymère choisie pour cette étude est le polyuréthane. Ce polymère est en effet très versatile et peut présenter des propriétés très variées selon les réactifs utilisés. Il est ainsi beaucoup utilisé dans des domaines nécessitant entre autres la tenue au feu. La molécule inorganique qui sera associée à cette matrice est le polydiméthylsiloxane. Celle-ci est beaucoup utilisée pour créer des matériaux hybrides.
Download or read book Handbook of Epoxy Blends written by Jyotishkumar Parameswaranpillai and published by Springer. This book was released on 2017-07-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference work compiles and summarizes the available information on epoxy blends. It covers all essential areas – the synthesis, processing, characterization and applications of epoxy blends – in a comprehensive manner. The handbook is highly application-oriented and thus serves as a valuable, authoritative reference guide for researchers, engineers, and technologists working on epoxy blends, but also for graduate and postgraduate students, polymer chemists, and faculties at universities and colleges.The handbook is divided into three parts and organized by the types of blends and components: Part I covers epoxy rubber blends, Part II focuses on epoxy thermoplastic blends, and Part III examines epoxy block-copolymer blends. Each part starts with an introduction, and the individual chapters provide readers with comprehensive information on the synthesis and processing, analysis and characterization, properties and applications of the different epoxy blends. All parts conclude with a critical evaluation of the applications, weighing their advantages and drawbacks. Leading international experts from corporate and academic research institutions and universities discuss the correlations of different epoxy blend properties with their macro-, micro- and nanostructures. This handbook thus offers a rich resource for newcomers to the field, and a major reference work for experienced researchers, the first of its kind available on the market. As epoxies find extremely broad applications, e.g. in oil & gas, in the chemical industry, building and construction industry, automotive, aviation and aerospace, boat building and marine applications, in adhesives and coatings, and many more, this handbook addresses researchers and practitioners from all these fields.
Download or read book Conservation of Plastics written by Yvonne Shashoua and published by Routledge. This book was released on 2012-06-25 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plastic objects are included more than ever in museums and galleries collections these days, but these items can start to deteriorate when they a just a few years old. In this book Yvonne Shashoua provides the essential knowledge needed to keep plastic pieces in the best possible condition so that they can continue to be enjoyed for many years. The historical development of plastics, as well as the technology, their physical and chemical properties, identification, degradation and conservation are all clearly and concisely covered within this single volume, making it an invaluable reference for the increasing number of conservators and curators that are encountering plastics in their day to day work.
Download or read book Handbook of Smart Textiles written by Xiaoming Tao and published by Springer. This book was released on 2015-10-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The “Handbook of Smart Textiles” aims to provide a comprehensive overview in the field of smart textile describing the state of the art in the research sector as well as the well-established techniques applied in industries. The handbook is planned to cover from fundamental theories, experimental techniques, characterization methods, as well as real applications with successful commercialized examples. The book is structured in a way in which it is appropriate for graduate students, PhD candidates, and professionals in diverse scientific and engineering communities devoted to relevant fields, including textile engineering, chemistry, bioengineering, material engineering, mechanical engineering, electrical engineering. The book will also provide a solid reference for industrial players who look for innovative technologies as well as environmental, safety concerns for the development of smart textile related products.
Download or read book Polymers in Medicine II written by E. Chiellini and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers and polymer based composites have gained increasingly larger applications in medicine and surgery. Presently, most biomaterials applications rely on industrial substances that were initially developed by industry for non-medical purposes. Moreover, polymers have been often used regardless of their peculiar characteristics which can be viceversa and very attractive for some specific applications. In the past years we have assisted to a significative and faster development of polymer science as well as of medicine and surgery. The assistance of computer aided apparatus, the use of always more advanced instruments, the larger interest of the academic and industrial world, bring continuously new contributions to the research on biomedical and parmaceutical use of polymers. The need of a forum where these specific researchs can be presented and discussed, and the success of the 1st Conference on Polymers in Medicine, held in Porto Cervo in 1982, have encouraged the Editors to plana periodical meeting, focused on polymers and composites, to be held every odd year. This book contains papers selected by an International Scientific Committee among those presented at the 2nd International Conference on Polymers in Medicine, Biomedical and Pharmaceutical Applications, held in Capri, Italy, 3-7 June, 1985. In addition to contributed papers, several Authors were invited to present the "state of the art" as well as their personal contibution on specific key arguments. The level of all contributions was high, the participation well qualified, and the meeting interesting and hopefully pleasant.
Download or read book Mechanism and Theory in Organic Chemistry written by Thomas H. Lowry and published by HarperCollins Publishers. This book was released on 1987 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymers in Medicine written by Emo Chiellini and published by CRC Press. This book was released on 1992-06-13 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The utilization of polymers in medicine has become a reality in the last decade. This book is a concise presentation of the fundamentals, applications, and methods of optimization of polymeric drugs and polymeric drug delivery systems for medicinal purposes. The basic rationale for the use of polymeric drugs and polymer delivery systems is the possibility to alter the pharmacokinetics and pharmacodynamics of therapeutic agents so as to maintain an adequate therapeutic environment at the site of disfunction for an extended period of time. The primary objectives for using polymeric drugs and polymeric drug delivery systems are to introduce new and efficient methods of drug administration, to improve efficacy and patient compliance, to decrease toxicity, and to ensure safety. The following factors influence the design and performance of polymers for medicinal applications: disease, drug properties, type of therapy (acute or chronic), physiology of the patient, administration route, and the site requiring therapy.
Download or read book Handbook of Antistatics written by George Wypych and published by Elsevier. This book was released on 2016-10-03 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Antistatics, Second Edition, is the only comprehensive handbook to cover all aspects of antistatic agents, including a complete review of existing literature and patent information on additives capable of modifying properties of materials to make them antistatic, conductive, and/or EMI shielding. Information on the use of additives in various polymers is divided into types and concentrations of antistatics used, the potential effect of antistatics on the polymer and other additives, and examples of typical formulations used for processing of polymers containing the antistatic additive. Each chapter addresses specific properties and applications of antistatic agents, including methods of quality control, compatibility of antistatic agents, and various polymer matrices (along with performance implications), incorporation methods, health and safety, and environmental implications. - Includes everything engineers and materials scientists need to know about the use of antistatics in polymers, from incorporation methods, to regulations and standards - Presents a combination of up-to-date properties data and authoritative analysis of materials performance - Contains detailed coverage of processing methods, giving information on the amount and type of antistatics used in each processing method, along with the typical formulations used
Download or read book Crown Ethers and Phase Transfer Catalysis in Polymer Science written by Lon Mathias and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase transfer catalysis or interfacial catalysis is a syn thetic technique involving transport of an organic or inorganic salt from a solid or aqueous phase into an organic liquid where reaction with an organic-soluble substrate takes place. Over the past 15 years there has been an enormous amount of effort invested in the development of this technique in organic synthe sis. Several books and numerous review articles have appeared summarizing applications in which low molecular weight catalysts are employed. These generally include either crown ethers or onium salts of various kinds. While the term phase transfer catalysis is relatively new, the concept of using a phasetrans fer agent (PTA) is much older~ Both Schnell and Morgan employed such catalysts in synthesis of polymeric species in the early 1950's. Present developments are really extensions of these early applications. It has only been within the last several years that the use of phase transfer processes have been employed in polymer synthesis and modification. Similarly, the use of polymer-bound phase transfer agents is also a recent development. These and related areas have nonetheless enjoyed explosive growth as mea sured by the number of publications and the variety of applica tions which have appeared. Several reviews dealing with these l 6 polymer-related investigations have been published.
Download or read book Biomedical Applications of Microencapsulation written by Franklin Lim and published by CRC Press. This book was released on 2019-06-12 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published in 1984: For this volume the publishers at CRC Press have chosen to present information on just one important area, namely the biomedical field, where much progress in the application of microencapsulation has been made in recent years.
Download or read book Molecular Characterization of Composite Interfaces written by Hatsuo Ishida and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an extended version of the proceedings of the Symposium on Polymer Composites, Interfaces, which was held under the auspices of the Division of Polymer Chemistry, American Chemical Society (ACS) during the annual ACS meeting in Seattle, March, 1983. The importance of the interface in composite materials has been recognized since the inception of modern composite technology. Specifically, silane coupling agents were developed for glass fiber reinforced compOSites at a very early date. Ever since then the diversity of composite materials and the development of various surface treatment methods have led to the establishment of an "interface art." A trial-and-error approach has dominated the interfacial aspects of composite technology until very recently. With the advent of modern analytical techniques for surface characterization, it became possible to study detailed surface and interface structures. It was hoped that this symposium would catalyze such a fundamental and scientific approach in composite studies. For this reason, the symposium was structured to verify the influence of interfacial structures on the mechanical and physical performance of composites and to improve our knowledge of the microstructure of composite interfaces. As the word ·composite" indicates, interdisciplinary interaction is indispensable for proper understanding of multiphase systems.
Download or read book Wearable Electronics and Photonics written by Xiaoming Tao and published by Elsevier. This book was released on 2005-03-29 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating electronics into clothing is a major new concept, which opens up a whole array of multi-functional, wearable electro-textiles for sensing/monitoring body functions, delivering communication facilities, data transfer, individual environment control, and many other applications. With revolutionary advancements occurring at an unprecedented rate in many fields of science and electronics the possibilities offered by wearable technologies are tremendous and widespread. These advancements will transform the world and will soon begin to permeate into commercial products.The first section of the book discusses the materials and devices used in the field, including electro-statically generated nanofibres, electroceramic fibres and composites and electroactive fabrics. It summarizes recent developments in electrically conductive fabric structures and puts together a few theoretical treatments of the electro-mechanical properties of various fabric structures. The next section reviews topics related to wearable photonics such as fibre optic sensors and integrated smart textile structures, the developments in various flexible photonic display technologies as well as looking at current communication apparel and optical fibre fabric displays. Next the book focuses on integrated structures and system architectures. Finally the issues facing a fashion designer working with wearables are explored.Wearable electronics and photonics covers many aspects of the cutting-edge research and development into this exciting field and provides a window through which only a small portion of the exciting emerging technology can be seen. With contributions from a panel of international experts in the field this is an essential guide for all electrical, textile and biomedical engineers as well as academics and fashion designers. - Stay one step ahead of the industry on this hot topic - Evaluates the major new concept of integrating electronics into clothing - Explores future trends for fashion and specialist clothing
Download or read book Polymer Additives written by Jiri E. Kresta and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the beginning of the plastics and rubber industry, it was realized that useful products could be produced only if cer tain additives were incorporated into polymers. With the help of these additives, when physically dispersed in a polymer matrix, it has been possible to improve stability against thermal, oxidative, UV, hydrolytic and biological degradation, mechanical properties, flammability, cost, and processibility of plastics. The enormous growth of the volume of plastics consumed by modern society, and new application areas for plastics, have created a demand for new, better additives and better understanding of their functions in polymer systems. As a result of these trends there is a need for sharing of information on progress achieved in the area of polymer additives among engineers and scientists of the plastics industry and academia. This book is based on expanded and updated papers originally presented at the International Symposium on Polymer Additives, which was held in Las Vegas, Nevada, and was sponsored by the American Chemical Society, Division of Polymeric Materials Science and Engi neering. The book is divided into five parts which cover advances in various areas of polymer additives. The first part is devoted to the progress in understanding of UV degradation and stabilization of various polymers. Oxidation degradation and stabilization of plastic materials is covered in the second part. New developments in the stabilization of PVC are presented in the third part.
Download or read book Nanoenergy written by Flavio L Souza and published by Springer. This book was released on 2017-08-30 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discuss the recent advances and future trends of nanoscience in solar energy conversion and storage. This second edition revisits and updates all the previous book chapters, adding the latest advances in the field of Nanoenergy. Four new chapters are included on the principles and fundamentals of artificial photosynthesis using metal transition semiconductors, perovskite solar cells, hydrogen storage and neutralization batteries. More fundamental aspects can be found in this book, increasing the comparison between theory-experimental achievements and latest developments in commercial devices.
Download or read book Polymer Surface Dynamics written by J.D. Andrade and published by Springer. This book was released on 1988-03-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A small symposium on The Dynamic Aspects of Polymer Surfaces was held as part of the Rocky Mountain Regional American Chemical Society meeting, June, 1986, in Denver, Colorado. In view of the growing activity and interest in polymer surface dynamics, the participants agreed to publish their papers under the auspices of Plenum Press. The authors and participants join me in wishing that this volume will be of assistance to those studying and applying polymeric materials and that it will contribute to the growing awareness that polymer surfaces are indeed dynamic and undergo time- and temperature-dependent relaxations in response to changes in their local environment. J. D. Andrade Salt Lake City, Utah January 1987 CONTENTS Polymer Surface and Interface Dynamics: An Introduction ••••••••••••••• l J. D. Andrade Modeling of the Wilhelmy Contact Angle Method with Practical Sample Geometr i es •••••••••••••••••••••••••••••••••••••••••••••••• 9 P. Dryden, J. H. Lee, J. M. Park, and J. D. Andrade Contact Angles at Polymer~ater Interface; Temperature Dependence and Induced Deformation ••••••••••••••••••••••••. ••••• 25 M. S. Jhon and S. H. Yuk Orientation Phenomena at Polymer-Water Interfaces ••••••••••••••••••••• 45 L. Lavielle Dynamic Contact Angle Studies of N-Alkyl Derivatized Boro-Silicate Glass Surfaces •••••••••••••••••••••••••••••••••••• 67 J. M. Park and J. D. Andrade Surface Mobility and Structural Transitions of Poly(n-Alkyl Methacrylates) Probed by Dynamic Contact Angle Measurement •••••• 89 H. S. van Damme, A. H. Hogt, and J. Feijen Dynamic Wettability of Hydrophobic Polymers •••••••••••••••••••••••••• lOl M. J. OWen, T. M. Gentle, T. Orbeck, and D. E.
Download or read book Contemporary Biomaterials written by John W. Boretos and published by William Andrew. This book was released on 1984 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book distinguishes between biomaterials for clinical use, and medical devices or components of devices. Biomaterials are defined as substances which can be placed in intimate contact with living structures without harmful effects. They become devices (internal or external to the body) when processed or shaped to serve a specific function. Implants are a subclass of devices which need to be located inside the body to achieve their purpose.
Download or read book Advances in Chemistry Series written by and published by . This book was released on 1950 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
