The Effect of Processing Parameters on the Microwave Absorption by Polyaniline/PMMA Composites PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
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Book Description
Conductive thermoplastic PMMA composites containing Polyaniline conductive filler were prepared. Conditions were varied in order to examine their effect on the electrical and microwave properties. Ball-milling for 2 h prior to heating at 175 deg C at 8- psi for 3 min in the presence of 10 wt % hydroquinone plasticizer was found to give composites with the highest measured microwave absorption in the X-band (8-12 GHz). Loss tangents as high as 44 were attained under these conditions.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
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Book Description
Conductive thermoplastic PMMA composites containing Polyaniline conductive filler were prepared. Conditions were varied in order to examine their effect on the electrical and microwave properties. Ball-milling for 2 h prior to heating at 175 deg C at 8- psi for 3 min in the presence of 10 wt % hydroquinone plasticizer was found to give composites with the highest measured microwave absorption in the X-band (8-12 GHz). Loss tangents as high as 44 were attained under these conditions.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
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Book Description
This report examines the potential of polymer composites containing the conducting polymer polyaniline as radar absorbing materials in the X-band (microwave) frequency range. It describes the preparation of conductive thermoplastic polymethyl methacrylate (PMMA) composites containing polyaniline conductive filler under conditions that were varied in order to determine their effect on the electrical & microwave properties. The effects of sample mixing, melting temperature, heating time, amount of plasticizer, and amount of conducting polymer on the conductivity, permittivity, and microwave absorption are reported.
Author: Prasanna Chandrasekhar
Publisher: Springer Science & Business Media
ISBN: 1461552451
Category : Technology & Engineering
Languages : en
Pages : 740
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Book Description
This book deals with the practical fundamentals and applications of conducting polymers. Written from a pedagogical point of view and at a very basic level, it provides a thorough grounding in CPs ideal for further work, as a reference, or as a supplementary course text.
Author: Kishor Kumar Sadasivuni
Publisher: Elsevier
ISBN: 0128225866
Category : Technology & Engineering
Languages : en
Pages : 796
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Book Description
MXenes and their Composites: Synthesis, Properties and Potential Applications presents a state of the art overview of the recent developments on the synthesis, functionalization, properties and emerging applications of two-dimensional (2D) MXenes and their composites.The book systematically describes the state-of-the-art knowledge and fundamentals of MXene synthesis, structure, surface chemistry and functionalization. The book also discusses the unique electronic, optical, mechanical and topological properties of MXenes. Besides, this book covers the various emerging applications of MXenes and their composites across different fields such as energy storage and conversion, gas sensing and biosensing, rechargeable lithium and sodium-ion batteries, lithium-sulphur and multivalent batteries, electromagnetic interference shielding, hybrid capacitors and supercapacitors, hydrogen storage, catalysis and photoelectrocatalysis, gas separation and water desalination, environmental remediation and medical and biomedical applications. All these applications have been efficiently discussed in the specific chapters and in each case, the processing of MXene composites has also been discussed.This book will be an excellent reference for scientists and engineers across various disciplines and industries working in the field of highly promising 2D MXenes and their composites. The book will also act as a guide for academic researchers, material scientists, and advanced students in investigating the new applications of 2D MXenes based materials. Covers fundamentals of technologically important MAX phases, MXene derivatives, MXene synthesis methods, intercalation and delamination strategies, surface functionalization, fundamental characteristics and properties Demonstrates major application areas of MXenes, including catalytic, energy storage and energy generation, flexible electronics, EMI shielding, sensors and biosensors, medical and biomedical, gas separation and water desalination Presents a detailed discussion on the processing and performance of various MXenes towards different applications
Author: Kalim Deshmukh
Publisher: Elsevier
ISBN: 0323985599
Category : Science
Languages : en
Pages : 793
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Book Description
Biodegradable and Biocompatible Polymer Nanocomposites: Processing, Characterization, and Applications brings together the latest research, highlighting cutting-edge applications in this exciting field. Sections introduce biodegradable and biocompatible polymers and the fundamentals regarding synthesis, structure, properties, biocompatibility and biodegradability, provide in-depth coverage of methods and techniques for processing, spectroscopic and microscopic analysis, dielectric, thermal, and electrical conductivity, and incorporation of functionalized nanoparticles, and green synthesized nanoparticles. The second part of the book guides the reader through the properties and preparation of biodegradable and biocompatible polymer nanocomposites for a range of specific, targeted, state-of-the-art applications across biomedicine, electronic, energy storage, environment and packaging. Finally, sustainability assessment, environmental impact, and recycling strategies are discussed in detail. Provides detailed methods for green synthesis, polymer modification, processing and analysis Explores novel applications across biomedicine, electronics, energy storage, the environment and packaging Examines key issues, such as biocompatibility, biodegradability, recycling strategies and measuring environmental impact
Author: P.M. Visakh
Publisher: Elsevier
ISBN: 0128095660
Category : Technology & Engineering
Languages : en
Pages : 360
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Book Description
Polyaniline Blends, Composites, and Nanocomposites summarizes recent advances in polyaniline-based blends, composites and nanocomposites. Polyaniline (PANI) is a conducting polymer with a range of potential applications, particularly in electronics and packaging. The book covers the preparation, characterization and application of PANI-based composites, including the structure-property relationship and modification of PANI. It offers an in-depth update on the major findings and observations in the field of polyaniline-based blends, composites and nanocomposites, with contributions from leading researchers in industry, academia, government and private research institutions worldwide. The book is an application-oriented, practical guide to the development and application of this polymeric material. The book includes discussion of reinforcement of polyaniline via addition of carbon-based materials, blends with thermoplastics, thermosets, natural and synthetic rubber, and polyaniline based composites and nanocomposites, with an emphasis on enabling polymer scientists and engineers to more effectively utilize this material in new applications. Includes an in-depth update on the state of research into this exciting material, with detailed and practical information for developing emerging applications of polyaniline Enables polymer scientists and engineers to overcome challenges and take advantage of opportunities relating to polyaniline, e.g., solubility of the polymer, improving conductivity and more Includes detailed coverage of the preparation, characterization and application of PANI-based composites in detail, along with the structure-property relationship and modification of PANI
Author: Dimitrios Tasis
Publisher: Royal Society of Chemistry
ISBN: 1782625828
Category : Technology & Engineering
Languages : en
Pages : 293
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Book Description
Chemically-modified carbon nanotubes (CNTs) exhibit a wide range of physical and chemical properties which makes them an attractive starting material for the preparation of super-strong and highly-conductive fibres and films. Much information is available across the primary literature, making it difficult to obtain an overall picture of the state-of-the-art. This volume brings together some of the leading researchers in the field from across the globe to present the potential these materials have, not only in developing and characterising novel materials but also the devices which can be fabricated from them. Topics featured in the book include Raman characterisation, industrial polymer materials, actuators and sensors and polymer reinforcement, with chapters prepared by highly-cited authors from across the globe. A valuable handbook for any academic or industrial laboratory, this book will appeal to newcomers to the field and established researchers alike.
Author: Parveen Saini
Publisher: John Wiley & Sons
ISBN: 1119137101
Category : Technology & Engineering
Languages : en
Pages : 684
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Book Description
Since their discovery in 1977, the evolution of conducting polymers has revolutionized modern science and technology. These polymers enjoy a special status in the area of materials science yet they are not as popular among young readers or common people when compared to other materials like metals, paper, plastics, rubber, textiles, ceramics and composites like concrete. Most importantly, much of the available literature in the form of papers, specific review articles and books is targeted either at advanced readers (scientists / technologists / engineers / senior academicians) or for those who are already familiar with the topic (doctoral / postdoctoral scholars). For a beginner or even school / college students, such compilations are bit difficult to access / digest. In fact, they need proper introduction to the topic of conducting polymers including their discovery, preparation, properties, applications and societal impact, using suitable examples and already known principles/knowledge/phenomenon. Further, active participation of readers in terms of "question & answers", "fill-in-the-blanks", "numerical" along with suitable answer key is necessary to maintain the interest and to initiate the "thought process". The readers also need to know about the drawbacks and any hazards of such materials. Therefore, I believe that a comprehensive source on the science / technology of conducting polymers which maintains a link between grass root fundamentals and state-of-the-art R&D is still missing from the open literature.
Author: Susheel Kalia
Publisher: Springer
ISBN: 3319253220
Category : Technology & Engineering
Languages : en
Pages : 240
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Book Description
This book is concerned with polymeric hydrogels, which are considered as one of the most promising types of new polymer-based materials. Each chapter in this book describes a selected class of polymeric hydrogels, such as superabsorbent hybrid nanohydrogels, conducting polymer hydrogels, polysaccharide-based or protein-based hydrogels, or gels based on synthetic polymers. In this way, the book also addresses some of the fascinating properties and applications of polymeric hydrogels: they are three-dimensional, hydrophilic, polymeric networks that can absorb, swell and retain large quantities of water or aqueous fluids. In combination with metal nanoparticles, nanofibrils or nanowhiskers, which may be embedded in the gels, they find widespread applications, ranging from agriculture, and waste water treatment, over electronics, to pharmaceutical and biomedical applications. Applications mentioned in this book include electro sensors, capacitors, electromechanical actuators, and even artificial muscles.
Author: Yuping Duan
Publisher: CRC Press
ISBN: 1315341034
Category : Science
Languages : en
Pages : 382
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Book Description
With the phenomenal development of electromagnetic wave communication devices and stealth technology, electromagnetic wave absorbing materials have been attracting attention as antielectromagnetic interference slabs, stealth materials, self-concealing technology, and microwave darkrooms. This book starts with the fundamental theory of electromagnetic wave absorption in loss medium space, followed by a discussion of different microwave absorbents, such as manganese dioxide, iron-based composite powder, conductive polyaniline, barium titanate powder, and manganese nitride. Then, structural absorbing materials are explored, including multilayer materials, new discrete absorbers, microwave absorption coatings, cement-based materials, and structural pyramid materials. Many of the graphics demonstrate not only the principles of physics and experimental results but also the methodology of computing. The book will be useful for graduate students of materials science and engineering, physics, chemistry, and electrical and electronic engineering; researchers in the fields of electromagnetic functional materials and nanoscience; and engineers in the fields of electromagnetic compatibility and stealth design.
