Download or read book Thermally Stimulated Discharge of Polymer Electrets written by J. van Turnhout and published by Elsevier Science & Technology. This book was released on 1975 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrets In Engineering written by Vladimir N. Kestelman and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently a new sphere in materials science· has formed which subject is structure and properties of electret materials used in engineering, medicine, biotechnology and other branches. It is characterized by specific methods of experimental investigations based on recording charge transfer, polarization and depolarization of dielectrics and involves original techniques and physico-mathematical aids where notions that exist at the interface of several natural and technical sciences are concentrated. It embraces a vast area of applications mainly in engineering, instrument making, electronics, medical technique, biotechnology, and etc., has a specialized technological base for electric polarization of dielectrics composed of uncommon technological methods, equipment and instrumentation. Apparently, future fundamental investigations in the domain of electret materials science are to be developed at the interface of computer of dielectrics. Elaboration of a simulation, physics and physical chemistry model for electric polarization of solid media with uneven charge density distribution, complicated by surface phenomena, outer electromagnetic, heat, chemical and other effects, presents a grave methodological problem. The simulation of structures in which polarization follows diffusion mechanism of chemically active molecules or their fragments, and the development of calculation methods for polarized charge relaxation and regularities of dielectric nonlinear properties, are the most urgent objectives of current research. Success in bioelectret effect studies is anticipated to result in profound widening of natural science knowledge.
Download or read book The Analysis of Thermally Stimulated Processes written by R. Chen and published by Elsevier. This book was released on 2013-10-22 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermally stimulated processes include a number of phenomena - either physical or chemical in nature - in which a certain property of a substance is measured during controlled heating from a 'low' temperature. Workers and graduate students in a wide spectrum of fields require an introduction to methods of extracting information from such measurements. This book gives an interdisciplinary approach to various methods which may be applied to analytical chemistry including radiation dosimetry and determination of archaeological and geological ages. In addition, recent advances are included, such as ionic thermocurrent of general order kinetics, polarization thermocurrents and some aspects of the superlinear dependence on the dose of thermoluminescence
Download or read book Dielectrics in Electric Fields written by Gorur Govinda Raju and published by CRC Press. This book was released on 2017-07-28 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectrics in Electric Fields explores the influence of electric fields on dielectric—i.e., non-conducting or insulating—materials, examining the distinctive behaviors of these materials through well-established principles of physics and engineering. Featuring five new chapters, nearly 200 new figures, and more than 800 new citations, this fully updated and significantly expanded Second Edition: Analyzes inorganic substances with real-life applications in harsh working conditions such as outdoor, nuclear, and space environments Introduces methods for measuring dielectric properties at microwave frequencies, presenting results obtained for specific materials Discusses the application of dielectric theory in allied fields such as corrosion studies, civil engineering, and health sciences Combines in one chapter coverage of electrical breakdown in gases with breakdown in micrometric gaps Offers extensive coverage of electron energy distribution—essential knowledge required for the application of plasma sciences in medical science Delivers a detailed review of breakdown in liquids, along with an overview of electron mobility, providing a clear understanding of breakdown phenomena Explains breakdown in solid dielectrics such as single crystals, polycrystalline and amorphous states, thin films, and powders compressed to form pellets Addresses the latest advances in dielectric theory and research, including cutting-edge nanodielectric materials and their practical applications Blends early classical papers that laid the foundation for much of the dielectric theory with more recent work The author has drawn from more than 55 years of research studies and experience in the areas of high-voltage engineering, power systems, and dielectric materials and systems to supply both aspiring and practicing engineers with a comprehensive, authoritative source for up-to-date information on dielectrics in electric fields.
Download or read book Ferroelectric Polymers written by Hari Singh Nalwa and published by CRC Press. This book was released on 1995-06-20 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work covers the chemistry and physics of polymeric materials and their uses in the fields of electronics, photonics, and biomedical engineering. It discusses the relationship between polymeric supermolecular structures and ferroelectric, piezoelectric and pyroelectric properties.
Download or read book Dual Phase Depolarization Analysis written by Jean Pierre Ibar and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-05-09 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book describes and explains thermally stimulated current depolarization and thermal sampling. Electrical charges are created in the dielectric material by a voltage field. Analyzing how the current discharges provides insights into the atomic structure of the polymer, its organization and free volume. The book also includes case studies teaching how to apply the characterization techniques to understand the behavior of polymers.
Download or read book Thermal Analysis of Polymers written by Joseph D. Menczel and published by John Wiley & Sons. This book was released on 2014-07-09 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a solid introduction to thermal analysis, methods, instrumentation, calibration, and application along with the necessary theoretical background. Useful to chemists, physicists, materials scientists, and engineers who are new to thermal analysis techniques, and to existing users of thermal analysis who wish expand their experience to new techniques and applications Topics covered include Differential Scanning Calorimetry and Differential Thermal Analysis (DSC/DTA), Thermogravimetry, Thermomechanical Analysis and Dilatometry, Dynamic Mechanical Analysis, Micro-Thermal Analysis, Hot Stage Microscopy, and Instrumentation. Written by experts in the various areas of thermal analysis Relevant and detailed experiments and examples follow each chapter.
Download or read book High Pressure Chemistry and Physics of Polymers written by A.L. Kovarskii and published by CRC Press. This book was released on 1994-02-03 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-Pressure Chemistry and Physics of Polymers is devoted to covering all areas of high-pressure polymer materials science. Topics addressed include the synthesis of polymers, changes in reactivity, structural transformations, molecular dynamics, relaxation processes, deformational properties, chemical modification, and the effect of shock waves and shear stresses. The authors' contributions reflect over 60 years of Soviet study in the field of physico-chemistry conducted at the major former Soviet Institutes of Chemical Physics, Organic Chemistry, Polymer Chemistry, and Physical Chemistry. Fundamental topics such as compressibility of polymers, polymerization under pressure, viscoelastic/deformational properties, and polymer modification are discussed with an eye toward materials development for improving physical models and methods of calculating the changing parameters of materials under pressure. The book is a valuable reference to data on mechanisms of physical and chemical processes, in addition to new experimental data for improving physical models and methods of calculating changes in material characteristics under compression loads. High-Pressure Chemistry and Physics of Polymers will be an important reference for graduate students and practicing professionals in polymer chemistry and polymeric materials.
Download or read book Electrets written by Gerhard M. Sessler and published by Springer Science & Business Media. This book was released on 2005-08-01 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Properties of Ionomers written by Michel Pineri and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ionomers, that is polymers containing a low concentration of charged units along the chain, have been the subject of increasing interest during the past twenty years. The presence of ionic groups in the poly mer changes some of its properties dramatically. Increases in the modu lus and the viscosity of several orders of magnitude have been observed, and changes in the glass transition of hundreds of degrees are possible. In addition, diffusion coefficients can be modified drastically. These changes are due primarily to the presence of reversible ionic cross links in these materials. Because of the low dielectric constant of most organic polymers, the ions or ionic dipoles tend to aggregate ; this aggregation process, however, is limited, because the ionic groups are covalently bonded to the organic chain. Host of the fundamental research done on these materials has been devoted to a determination of the extent of association, the structure of the aggregates, the limi ting factors, and the correlations between molecular and supermolecular structure and the resul ting properties.
Download or read book Polymers Physical Properties written by and published by Academic Press. This book was released on 1980-04-16 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers Physical Properties
Download or read book Scientific Bulletin written by and published by . This book was released on with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Thermal Analysis and Calorimetry written by Stephen Z.D. Cheng and published by Elsevier. This book was released on 2002-12-09 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a new and exciting field of interdisciplinary macromolecular science and engineering, polymeric materials will have a profound presence in 21st century chemical, pharmaceutical, biomedical, manufacturing, infrastructure, electronic, optical and information technologies. The origin of this field derived from an area of polymer science and engineering encompassing plastic technologies. The field is rapidly expanding to incorporate new interdisciplinary research areas such as biomaterials, macromolecular biology, novel macromolecular structures, environmental macromolecular science and engineering, innovative and nano-fabrications of products, and is translating discoveries into technologies. · Unique in combining scientific concepts with technological aspects · Provides a comprehensive and broad coverage of thermodynamic and thermal behaviours of various polymeric materials as well as methodologies of thermal analysis and calorimetry · Contributions are from both pioneering scientists and the new generation of researchers
Download or read book Solid State Nuclear Track Detectors written by Patricia Fowler and published by Elsevier. This book was released on 2013-10-22 with total page 993 pages. Available in PDF, EPUB and Kindle. Book excerpt: The track detector conference was held under the joint auspices of the Parliamentary Assembly of the Council of Europe and the University of Bristol. This proceedings volume contains over 160 papers which cover the latest developments and applications of solid state nuclear track detectors in medicine, physics, chemistry, space research, geology and other fields.
Download or read book Molecular Dynamics of Additives in Polymers written by Alexander Kovarski and published by CRC Press. This book was released on 2023-01-27 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the dynamical behaviour of low-molecular additives in solid polymer matrixes. It covers: types and models of molecular motion in condensed media; dependence of motional frequency on particle structure and size, temperature, volume and stress; and polymer properties and polymeric structures. Extensive analysis of common regularities of rotational and translational dynamics of molecules introduced into polymers are given. The book also includes experimental techniques for molecular mobility evaluation, and features detailed data on rotational dynamics of additives. It should be of interest to specialists in various fields of polymer physical chemistry and materials science.
Download or read book Solid State Characterization of Pharmaceuticals written by Richard A. Storey and published by John Wiley & Sons. This book was released on 2011-03-31 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of solid state characterization is central to the pharmaceutical industry, as drug products are, in an overwhelming number of cases, produced as solid materials. Selection of the optimum solid form is a critical aspect of the development of pharmaceutical compounds, due to their ability to exist in more than one form or crystal structure (polymorphism). These polymorphs exhibit different physical properties which can affect their biopharmaceutical properties. This book provides an up-to-date review of the current techniques used to characterize pharmaceutical solids. Ensuring balanced, practical coverage with industrial relevance, it covers a range of key applications in the field. The following topics are included: Physical properties and processes Thermodynamics Intellectual guidance X-ray diffraction Spectroscopy Microscopy Particle sizing Mechanical properties Vapour sorption Thermal analysis & Calorimetry Polymorph prediction Form selection
Download or read book Dielectric Polymer Nanocomposites written by J. Keith Nelson and published by Springer Science & Business Media. This book was released on 2009-12-17 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric Polymer Nanocomposites provides the first in-depth discussion of nano-dielectrics, an emerging and fast moving topic in electrical insulation. The text begins with an overview of the background, principles and promise of nanodielectrics, followed by a discussion of the processing of nanocomposites and then proceeds with special considerations of clay based processes, mechanical, thermal and electric properties and surface properties as well as erosion resistance. Carbon nanotubes are discussed as a means of creation of non linear conductivity, the text concludes with a industrial applications perspective.
