Download or read book Preparation and Characterization of Carbon Nanofiber polyimide Composites written by Xiaobing Li and published by . This book was released on 2008 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrospinning and Electrospraying written by Sajjad Haider and published by BoD – Books on Demand. This book was released on 2019-12-11 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the recent advancements in the process parameters, research, and applications of electrospinning and electrospraying. The first chapter introduces the techniques and the effect of the parameters on the morphology of the nanofiber and nanoparticles and then the subsequent chapters focus on the applications of these techniques in different areas. This book will attract a broad audience including postgraduate students and industrial and academic investigators in sciences and engineering who wish to enhance their understanding of the emerging technologies and use this book as reference.
Download or read book Preparation and Characterization of Carbon Nanofibers and Its Composites by Chemical Vapor Deposition written by Chang-Seop Lee and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrocarbon gas or carbon monoxide was pyrolyzed by chemical vapor deposition (CVD), and carbon nanofiber (CNF) synthesis was performed using transition metals such as Ni, Fe, and Co as catalysts. When synthesizing carbon nanofibers using the CVD method, experimental variables are temperature, catalysts, source gas, et cetera Especially, the particle size of the catalyst is the most important factor in determining the diameter of carbon nanofibers. Hydrocarbon gases, such as CH4, C2H4, benzene, and toluene are used as the carbon source, and in addition to these reaction gases, nonreactive gases such as H2, Ar, and N2 gases are used for transportation. Synthesis occurs at a synthesis temperature of 600-900°C, and catalyst metals such as Ni, Co, and Fe are definitely required when synthesizing CNFs. Therefore, it is possible to synthesize CNFs in selective areas through selective deposition of such catalyst metals. In this study, CNFs were synthesized by CVD. Ethylene gas was employed as the carbon source for synthesis of CNFs with H2 as the promoting gas and N2 as the balancing gas. Synthesized CNFs can be used in various applications, such as composite materials, electromagnetic wave shielding materials, ultrathin display devices, carbon semiconductors, and anode materials of Li secondary batteries. In particular, there is an increasing demand for light-weight, small-scale, and high-capacity batteries for portable electronic devices, such as notebook computers or smartphones along with the recent issue of fossil energy depletion. Accordingly, CNFs and their silicon-series composites are receiving attention for use as anode materials for lithium secondary batteries that are eco-friendly, light weight, and high capacity.
Download or read book Carbon Containing Polymer Composites written by Mostafizur Rahaman and published by Springer. This book was released on 2018-10-05 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the methods synthesizing various carbon materials, like graphite, carbon blacks, carbon fibers, carbon nanotubes, and graphene. It also details different functionalization and modification processes used to improve the properties of these materials and composites. From a geometrical–structural point of view, it examines different properties of the composites, such as mechanical, electrical, dielectric, thermal, rheological, morphological, spectroscopic, electronic, optical, and toxic, and describes the effects of carbon types and their geometrical structure on the properties and applications of composites.
Download or read book Characterization of Carbon Nanotube Based Composites under Consideration of Defects written by Moones Rahmandoust and published by Springer. This book was released on 2015-10-14 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the characterization methods involved with carbon nanotubes and carbon nanotube-based composites, with a more detailed look at computational mechanics approaches, namely the finite element method. Special emphasis is placed on studies that consider the extent to which imperfections in the structure of the nanomaterials affect their mechanical properties. These defects may include random distribution of fibers in the composite structure, as well as atom vacancies, perturbation and doping in the structure of individual carbon nanotubes.
Download or read book Carbon Nanotube Based Composites written by Antonio Pantano and published by Smithers Rapra. This book was released on 2012-09-28 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs) have amazing properties and a key way to take advantage of this is by incorporating nanotubes into a matrix to build composite materials. The best candidates for this task are undoubtedly polymers. Almost every characteristic of a polymer can be significantly enhanced by adding carbon nanotubes and as a result, new potential applications of carbon nanotube enhanced polymer composites are discovered every day. However, before carbon nanotube enhanced polymer composites become commonplace there are some tough challenges that need to be overcome. This book reviews the status of worldwide research in both single-walled and multi-walled carbon nanotube based composites. It serves as a practical guide on carbon nanotube based composites and a reference to students and researchers from the academia and industry.
Download or read book Carbon Nanofibers written by Madhuri Sharon and published by John Wiley & Sons. This book was released on 2021-02-09 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamentals and applications of Carbon Nanofiber (CNF). In the first section, the initial chapter on the fundamentals of CNF is by Professor Maheshwar Sharon, the recognized “Father of Carbon Nanotechnology in India”, which powerfully provides a succinct overview of CNFs. This is followed by a chapter on biogenics that have produced unique morphologies of CNF that makes them suitable to various applications. This is followed by a chapter that mainly focuses on nanocomposites, especially those involving nanocomposites of CNF. The role of nanocatalysts and composites in promoting and enhancing the synthesis and application of CNF is then covered, followed by an important chapter on the characterization of CNF. The second section of the book encompasses the various applications of CNF, such as its use as a possible superconductor to adsorb and store hydrogen, and as a microwave absorber. The application of CNF for environmental concerns is also detailed by assessing its usefulness in dye and heavy metal removal from polluted water. The applications that are addressed include lithium-ion battery, solar cell, antenna, cosmetics, usefulness in regenerative medicine, as well as various aspects of agrotechnology.
Download or read book Polymer Carbon Nanotube Composites written by T McNally and published by . This book was released on 2011 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the properties of polymer carbon nanotube (CNT) composites is the key to these materials finding new applications in a wide range of industries, including but not limited to electronics, aerospace and biomedical/bioengineering. Polymer-carbon nanotube composites provides comprehensive and in-depth coverage of the preparation, characterisation, properties and applications of these technologically interesting new materials. Part one covers the preparation and processing of composites of thermoplastics with CNTs, with chapters covering in-situ polymerization, melt processing and CNT surface treatment, as well as elastomer and thermoset CNT composites. Part two concentrates on properties and characterization, including chapters on the quantification of CNT dispersion using microscopy techniques, and on topics as diverse as thermal degradation of polymer/CNT composites, the use of rheology, Raman spectroscopy and multi-scale modelling to study polymer/CNT composites, and CNT toxicity. In part three, the applications of polymer/CNT composites are reviewed, with chapters on specific applications such as in fibres and cables, bioengineering applications and conductive polymer CNT composites for sensing. With its distinguished editors and international team of contributors, Polymer-carbon nanotube composites is an essential reference for scientists, engineers and designers in high-tech industry and academia with an interest in polymer nanotechnology and nanocomposites. Provides comprehensive and in-depth coverage of the preparation, characterisation and properties of these technologically interesting new materials Reviews the preparation and processing of composites of thermoplastics with CNTs, covering in-situ polymerization, melt processing and CNT surface treatment Explores applications of polymer/CNT composites such as in fibres and cables, bioengineering applications and conductive polymer CNT composites for sensing.
Download or read book Preparation and Characterization of Carbon Nanotubes polypropylene Nanocomposites written by Mohammad Fahad Alanazi and published by . This book was released on 2012 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Nanotube Polymer Composites written by Dimitrios Tasis and published by Royal Society of Chemistry. This book was released on 2015-11-09 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Preparation Characterization and Applications of Electrospun Carbon Nanofibers and Its Composites written by Kim Ick Soo and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanofibers (CNFs) and its composites have gained vast attention due to its exceptional chemical and textural properties. So far, various multifunctional carbon nanofibers and its composites are developed with highly unique and tunable morphology. In this chapter, we reviewed unique fabrication methods that are recently reported and its characterization techniques such as SEM, FE-SEM, TEM, WAXD, XPS, AFM, and Raman. In addition, catalytic, energy, and environmental applications of carbon nanofiber composites (metals and/or metal oxide nanoparticles incorporated and/or decorated hybrid carbon nanofibers) are discussed. Preparation and characterization of electrospun carbon nanofiber composites and its applications in catalysis and energy storage are the main focus of this chapter.
Download or read book Carbon Nanofiber Reinforced Polymer Composites written by Ronald L. Poveda and published by Springer. This book was released on 2015-09-15 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an extensive review of literature on the properties of carbon nanofibers (CNF) reinforced polymer composites in conjunction with advances in the production and properties of CNFs. It further provides readers a view into the development of lightweight composites whose properties are tailored and enhanced with micro- and nano-reinforcement, along with results from data comparisons from several published investigations.
Download or read book Characterization of Aligned Carbon Nanotube polymer Composites written by Sumanth Banda and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this thesis is to efficiently disperse and align SWNTs in two different polymer matrices to obtain an orthotropic composite whose strength, stiffness and electrical properties depend on the orientation of the SWNTs. The SWNTs are successfully dispersed and aligned in a polyimide matrix and a polymer blend of UDMA/HDDMA. In-situ polymerization under sonication is used to disperse the SWNTs in polyimide matrix and sonication is used to disperse SWNTs in the UDMA/HDDMA matrix. In both cases, an electric field is used to align the SWNTs in the polymer matrices. In the polyimide, the SWNTs are aligned by electrospinning technique, and in (UDMA/HDDMA) the SWNTs are aligned by applying an AC electric field, while the composite is cured. The electrical and mechanical properties of randomly dispersed SWNT polyimide composites and SWNT/UDMA/HDDMA composite are measured. The dielectric constant and storage modulus of SWNT polyimide composite increased with SWNT concentration. Low percolation (0.06 wt%) and an increase of 113% in storage modulus with 0.2 wt% SWNTs, both indicate good dispersion of SWNTs in the polyimide matrix. The dielectric constants, conductivity for the unaligned SWNT/UDMA/HDDMA composite are isotropic. The electrical and mechanical properties of the randomly dispersed SWNT polyimide composite and SWNT/UDMA/HDDMA composite are used as references when analyzing the aligned counter parts. Different characterization methods are used to assess the alignment of the SWNTs in the polyimide and (UDMA/HDDMA) matrices. A variety of characterization techniques, i.e. microscopy, Raman spectroscopy, electrical conductivity, dynamic dielectric spectroscopy and dynamic mechanical analysis, indicate preferential alignment of SWNTs in two types of polymers: Polyimide and (UDMA/HDDMA). Optical microscope images showed alignment of the SWNTs in the UDMA/HDDMA composite. Inspection of the Raman spectra on aligned SWNT polyimide composite fibers and aligned SWNT/UDMA/HDDMA composite indicates a decrease in the intensity of the tangential peak of the SWNT with increase in the polarizer angle. The difference in the perpendicular and parallel Raman peaks indicate preferential alignment of SWNTs in both the polymer matrices. In the aligned polyimide composite, percolation transition is at 0.2 wt% SWNT concentrations when dielectric constant is measured parallel to the aligned SWNTs. But percolation transition is at 0.65 wt% SWNT concentrations when dielectric constant is measured perpendicular to the aligned SWNTs. Electrical measurements on aligned SWNT polyimide and UDMA/HDDMA composite are highly anisotropic. In both cases, the dielectric constant values parallel to the direction of SWNT alignment are higher than the values perpendicular to the direction of SWNT alignment. To analyze the resulting anisotropy in the dielectric constant, Bruggeman's effective medium approach is used. The effective medium theory predicts the effective dielectric constant of a composite with aligned anisotropic inclusions. The effective dielectric constant, perpendicular to the aligned inclusions and parallel to the aligned inclusions is estimated. The dielectric constant values of aligned SWNT polyimide and aligned SWNT/UDMA/HDDMA composites are compared to the experimental results. Both the values from the theory and experiment show anisotropy in dielectric constant. The theory indicated that the dielectric constant parallel to the aligned inclusions is highly influenced by the dielectric constant of the inclusion and the dielectric constant perpendicular to the aligned inclusions is highly influenced by the dielectric constant of the polymer matrix. Results from the different characterizing techniques indicate that SWNTs are successfully aligned in the polyimide matrix and (UDMA/HDDMA) matrix by electrospinning technique and by an AC electric field respectively.
Download or read book Preparation and Characterization of Polyimide Nanocomposites written by James Francis Cahoon and published by . This book was released on 2003 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Based Nanofillers and Their Rubber Nanocomposites written by Srinivasarao Yaragalla and published by Elsevier. This book was released on 2019-02-06 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-Based Nanofillers and their Rubber Nanocomposites: Fundamentals and Applications provides the synthetic routes, characterization, structural properties and effect of nano fillers on rubber nanocomposites. The synthesis and characterization of all carbon-based fillers is discussed, along with their morphological, thermal, mechanical, dynamic mechanical, and rheological properties. The book also covers the theory, modeling, and simulation aspects of these nanocomposites and their various applications. Users will find a valuable reference source for graduates and post graduates, engineers, research scholars, polymer engineers, polymer technologists, and those working in the biomedical field. Reviews rubber nanocomposites, specifically carbon-associated nanomaterials (nanocarbon black, graphite, graphene, carbon nanotubes, fullerenes, diamond) Presents the synthesis and characterization of carbon based nanocomposites Relates the structure of these nanocomposites to their function as rubber additives and their many applications
Download or read book Carbon Nanofibers written by Chang-Seop Lee and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is divided into two sections. Section One covers the authors' work on the synthesis and characteristics of the various carbon nanofibers and microcoils using chemical vapor deposition and electrospun technologies. This section includes Chapters One through Four. Chapter One is an introductory chapter which presents synthesis, properties and analysis of carbon nanofibers and microcoils prepared by chemical vapor deposition and electrospun technologies. Chapter Two introduces information for approaching electrospun carbon nanofibers (ECNFs) with superior mechanical strength from aligned and stretched polyacrylonitrile (PAN) copolymer nanofibers possessing high degrees of morphological and structural perfection. Chapter Three investigates the in-situ and ex-situ processes for the formation of geometrically controlled carbon microcoils and the practical application of carbon microcoils to the various nano/micro electronic or mechanical devices. Chapter Four discusses the synthesis and various characterizations of carbon nanofibers synthesized by catalytic chemical vapor deposition of halogenated hydrocarbons. Section Two deals with the recent advances in materials synthesis and characterization of carbon nanofibers and their applications such as Li secondary batteries, supercapacitors and heavy metal remediation in ground and wastewater. This section includes chapter Five through Ten. Chapter Five presents preparation and characterization of carbon nanofibers (CNFs), CNFs-Si, and CNFs-(PC)Si composites synthesized by the Chemical Vapor Deposition (CVD) method using transition metal catalysts and applications to anode materials of Li secondary batteries. Chapter Six introduces a synthesis and characterization of carbon nanofibers and Si/carbon nanofiber composites based on Ni and Mo catalysts prepared for the anode material of Li secondary batteries. Chapter Seven discusses the electrophoretic deposition of Ni and Cu catalysts on C-fiber textiles for the growth of carbon nanofibers and coating of silica by the hydrolysis of tetraethyl orthosilicate on carbon nanofibers, and finally applications to the anode materials for Li secondary batteries. Chapter Eight presents synthesis and characterization of transition metal coated carbon nanofibers on Ni foam via CVD followed by a dipping method and electrochemical performance as anode materials for Li secondary batteries. Chapter Nine introduces a design of hierarchical porous carbon materials containing various metal oxides as an electrode material for high-performance supercapacitors. Chapter Ten discusses an innovative carbon nanofibrous composite material prepared by the electrospun method and its application for efficient heavy metal pollutant remediation in contaminated groundwater as well as in wastewater treatment.
Download or read book Nanocarbons written by Ashwini P. Alegaonkar and published by CRC Press. This book was released on 2023-02-13 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a practical platform to the readers for facile preparation of various forms of carbon in its nano-format, investigates their structure–property relationship, and finally, realizes them for a variety of applications taking the route of application engineering. It covers the preparation and evaluation of nanocarbons, variety of carbon nanotubes, graphene, graphite, additively manufactured 3D carbon fibres, their properties, and various factors associated with them. A summary and outlook of the nanocarbon field is included in the appendices. Features: Presents comprehensive information on nanocarbon synthesis and properties and some specific applications Covers the growth of carbon nanoparticles, nanotubes, ribbons, graphene, graphene derivatives, porous/spongy phases, graphite, and 3D carbon fabrics Documents a large variety of characterizations and evaluations on the nature of growth causing effect on structure properties Contains dedicated chapters on miniaturized, flat, and 2D devices Discusses a variety of applications from military to public domains, including prevalent topics related to carbon. This book is aimed at researchers and graduate students in materials science and materials engineering, and physics.
