Transport Properties of Conductive Polymers PDF Download
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Author: J. A. Walker
Publisher:
ISBN:
Category :
Languages : en
Pages : 31
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Book Description
A series of free standing films of doped polypyrrole were prepared and characterized by infrared spectroscopic methods. The frequency dependence of the infrared reflectivity of the polymer films was fit to the Drude model for the dielectric function an electron gas. In order to adequately model the observed reflectance spectra, an additional oscillator term was added to the dielectric function to account for electronic transitions that involve mid gap electronic states. Approximate values for the plasma resonance frequency for these materials range between 1-4 x 10 to the -15th /s, while values for the carrier scattering time were on the order of 10 to the -15/s. The spectral analysis also allowed for the calculation of the complex dielectric constants. These constants appeared to scale with the dc conductivity of the polymer film. It is suggested that the very short carrier scattering time in conducting polymers limits the observed conductivity and that improvements in conducting polymer synthesis and processing techniques will ultimately result in much higher conductivity levels.
Author: J. A. Walker
Publisher:
ISBN:
Category :
Languages : en
Pages : 31
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Book Description
A series of free standing films of doped polypyrrole were prepared and characterized by infrared spectroscopic methods. The frequency dependence of the infrared reflectivity of the polymer films was fit to the Drude model for the dielectric function an electron gas. In order to adequately model the observed reflectance spectra, an additional oscillator term was added to the dielectric function to account for electronic transitions that involve mid gap electronic states. Approximate values for the plasma resonance frequency for these materials range between 1-4 x 10 to the -15th /s, while values for the carrier scattering time were on the order of 10 to the -15/s. The spectral analysis also allowed for the calculation of the complex dielectric constants. These constants appeared to scale with the dc conductivity of the polymer film. It is suggested that the very short carrier scattering time in conducting polymers limits the observed conductivity and that improvements in conducting polymer synthesis and processing techniques will ultimately result in much higher conductivity levels.
Author: R. H. Friend
Publisher: iSmithers Rapra Publishing
ISBN: 9780902348721
Category : Technology & Engineering
Languages : en
Pages : 130
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Book Description
This report explains the theory of polymer conductivity, and discusses developments in the synthesis of the major polymers. A detailed section on practical applications follows a discussion of the improved electrical and mechanical properties and environmental stability which make such applications possible. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.
Author: Larry Rupprecht
Publisher: William Andrew
ISBN: 0815516568
Category : Technology & Engineering
Languages : en
Pages : 293
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Book Description
This book is a collection of papers by individuals in industry and academia on research and application development of conductive polymers and plastics. Conductive plastics are positioned to play an increasingly important role in affairs of mankind, specifically in the area of electrical and electronic conductivity. While general knowledge about conductive polymers and plastics has been available for many years, a true understanding of their application has only taken place in the last 3 to 4 years. This is attributed to advances in materials and processing techniques. Engineers have only begun to explore the design freedom and economic benefits of specifying conductive polymers and plastics in industrial and business applications. This book is a key reference and guide to the use of conductive polymers and plastics. It is a summary of existing technologies, but also a look at future possibilities.
Author: Yanmin Wang
Publisher: Springer Nature
ISBN: 9811953635
Category : Technology & Engineering
Languages : en
Pages : 351
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Book Description
This book provides a comprehensive overview on the recent significant advancements of conductive polymers and their composites in terms of conductive mechanism, fabrication strategies, important properties, and various promising applications. The corresponding knowledge was systematically compiled in the logical order and demonstrated as seven chapters. The special structure, influencing factors of the conductivity, the charge carrier transport model, the wettability and classical categories of the conductive polymers are narrated. Both conventional and novel strategies undertaken to fabricate the conductive polymers are introduced, as provided the overall master of the progress. In comparison with the bulk counterpart, nanostructured conductive polymers with different dimensions such as nanospheres, nano-networks, nanotubes and nanowire arrays are produced through distinct methods, thus presenting unique and distinct performance endowed by the nanometer scale. The combination of conductive polymers with other functional materials results in a number of the composites with improved properties by synergistic effect. The superior performance of conductive polymers and their composites greatly facilitates their development toward various important applications in the advanced and sophisticated fields such as biological utilization, energy storage and sensors. Due to their excellent biocompatibility, conductive polymers and their composites stand out to be useful in the biological field including tissue engineering, drug delivery and artificial muscle. To meet the urgent demand of the energy storage, conductive polymers and their composites play an important role in the devices including supercapacitors, solar cells and fuel cells. Finally, development of conductive polymers and their composites in the modern industry is greatly enhanced by their applications in smart sensors such as conductometric sensors, gravimetric sensors, optical sensors, chemical sensors and biosensors. This book has significant value for researchers, graduate students, and engineers carrying out the fundamental research or industrial production of conductive polymers and their composites.
Author: Anish Khan
Publisher: John Wiley & Sons
ISBN: 352780790X
Category : Technology & Engineering
Languages : en
Pages : 550
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Book Description
A comprehensive and up-to-date overview of the latest research trends in conductive polymers and polymer hybrids, summarizing recent achievements. The book begins by introducing conductive polymer materials and their classification, while subsequent chapters discuss the various syntheses, resulting properties and up-scaling as well as the important applications in biomedical and biotechnological fields, including biosensors and biodevices. The whole is rounded off by a look at future technological advances. The result is a well-structured, essential reference for beginners as well as experienced researchers.
Author: Richard Jonathan Cohen
Publisher:
ISBN:
Category : Conducting polymers
Languages : en
Pages : 388
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Book Description
Author: R. Edward Barker
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
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Book Description
Author: Raymond B. Seymour
Publisher: Springer Science & Business Media
ISBN: 1461333091
Category : Science
Languages : en
Pages : 236
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Book Description
Those who recognize that our modern life style is dependent, to a large extent, on the use of organic polymers as thermal and elec trical insulators, may be surprised to learn that specific plastics may also be used as conductors of electricity. In addition to demon strating the versatility of polymers, this use as conductors will lead to developments which were not possible with other available materials of construction. This is a new field which is growing rapidly because of intensive research and developmental efforts by many different industrial, governmental and university investigators. Many of these researchers reported advances in this art at a symposium on conductive polymers sponsored by the American Chemical Society's Division of Organic Coatings and Plastics Chemistry held at the Second Chemical Congress of the North American Continent at Las Vegas, in August 1980. The proceedings of this timely symposium are presented in this book. The editor wishes to take this opportunity to express his grati tude to the authors who contributed to this book and to the ACS Organic Coatings and Plastics Division for sponsoring this effort. Raymond B. Seymour Department of Polymer Science University of Southern Mississippi Hattiesburg, MS 39401 v CONTENTS 1 New Horizons in Conductive Polymers Raymond B. Seymour Synthesis and Characterization of Conductive 7 Palladium Containing Polyimide Films • T.L. Wohlford. J. Schaff. L.T. Taylor.
Author: John R. Reynolds
Publisher: CRC Press
ISBN: 1315159295
Category : Technology & Engineering
Languages : en
Pages : 832
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Book Description
This book covers properties, processing, and applications of conducting polymers. It discusses properties and characterization, including photophysics and transport. It then moves to processing and morphology of conducting polymers, covering such topics as printing, thermal processing, morphology evolution, conducting polymer composites, thin films
Author: Terje A. Skotheim
Publisher: CRC Press
ISBN: 1420043595
Category : Technology & Engineering
Languages : en
Pages : 1030
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Book Description
Many significant fundamental concepts and practical applications have developed since the publication of the best-selling second edition of the Handbook of Conducting Polymers. Now divided into two books, the third edition continues to retain the excellent expertise of the editors and world-renowned contributors while providing superior coverage of
