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Polyhedral Oligomeric Silsesquioxane (POSS) Polymer Nanocomposites

Polyhedral Oligomeric Silsesquioxane (POSS) Polymer Nanocomposites
From Synthesis to Applications

by Sabu Thomas,Lakshmipriya Somasekharan

  • Publisher : Elsevier
  • Release : 2021-04-01
  • Pages : 576
  • ISBN : 0128213582
  • Language : En, Es, Fr & De
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Polyhedral Oligomeric Silsesquioxane (POSS) Polymer Nanocomposites: From Synthesis to Applications offers extensive coverage of polyhedral oligomeric silsesquioxanes and their nanocomposites, including their synthesis, characterization, interfacial interactions and advanced applications. Sections introduce essentials, information on their preparation and discussions on polymeric materials, including elastomers, thermoplastics, thermosetting polymers, polymer blends and IPNs. Further sections cover the latest analysis techniques, examine the properties of POSS-polymer nanocomposites, and discuss key application areas, such as biological, energy, defense, and space. Finally, issues surrounding industry implementation and lifecycle are explored. This is a valuable reference for researchers, scientists and advanced students in the areas of polymer composites and nanocomposites, polymer chemistry, polymer physics, polymer science, and materials science and engineering. In an industrial setting, this book will be of great interest to scientists, R&D professionals, and engineers across industries and disciplines. Covers all aspects of polyhedral oligomeric silsesquioxanes (POSS) and their nanocomposites, including synthesis and characterization techniques, properties, analysis, applications and trends Targets POSS nanocomposites, describing synthesis, characterization and the selection of POSS filler types according to polymeric material Explains the preparation and utilization of POSS polymer nanocomposites for cutting-edge applications, including biological, energy, and defense field applications

Polymer/POSS Nanocomposites and Hybrid Materials

Polymer/POSS Nanocomposites and Hybrid Materials
Preparation, Properties, Applications

by Susheel Kalia,Krzysztof Pielichowski

  • Publisher : Springer
  • Release : 2018-11-27
  • Pages : 462
  • ISBN : 3030023273
  • Language : En, Es, Fr & De
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This book provides an overview of polymer nanocomposites and hybrid materials with polyhedral oligomeric silsesquioxanes (POSS). Among inorganic nanoparticles, functionalized POSS are unique nano-building blocks that can be used to create a wide variety of hybrid and composite materials, where precise control of nanostructures and properties is required. This book describes the influence of incorporation of POSS moieties into (organic) polymer matrices on the mechanical, thermal and flammability behavior of composites and hybrid organic-inorganic materials. Importantly, POSS-containing materials can be bio-functionalized by linking e.g. peptides and growth factors through appropriate surface modification in order to enhance the haemo-compatibility of cardiovascular devices made of these materials. This volume includes descriptions of synthesis routes of POSS and POSS-containing polymeric materials (e.g. based on polyolefines, epoxy resins and polyurethanes), presentation of POSS’ role as flame retardants and as biocompatible linker, as well as the depiction of decomposition and ageing processes.

Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxane (POSS) Molecules

Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxane (POSS) Molecules
A Book

by Xuan Fu

  • Publisher : Unknown Publisher
  • Release : 2002
  • Pages : 342
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxanes (POSS).

Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxanes (POSS).
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2004
  • Pages : 1
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Polyhedral oligomeric silsesquioxanes (POSS) are being examined for use in many applications. These applications include space-survivable coatings, and ablative and fire-resistant materials. POSS compounds have a rigid, inorganic core and have been produced with a wide range of organic functionality. Due to their physical size, POSS incorporation in polymers generally serves to reduce chain mobility, often improving both thermal and mechanical properties. Herein, we describe the preparation and properties of POSS compounds and their polymer nanocomposites.

Polymer Nanocomposites Designed with Polyhedral Oligomeric Silsesquioxanes (POSS) and Plastics

Polymer Nanocomposites Designed with Polyhedral Oligomeric Silsesquioxanes (POSS) and Plastics
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2005
  • Pages : 2
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Polyhedral oligomeric silsesquioxanes (POSS) are nanoparticles that are used to enhance the thermal and mechanical properties of polymeric systems and are being examined for use in many applications. These applications include space-survivable coatings and fire-resistant materials. Due to their physical size, POSS incorporation in polymers generally serves to reduce chain mobility, thus affecting both thermal and mechanical properties. Polymeric materials are typically tough, lightweight, and easy to process. However, they often lack resistance to oxidation and degrade at high temperatures. Ceramic materials, on the other hand, are thermally stable and have high oxidative resistance, but are brittle and difficult to process. POSS materials contain a thermally robust inorganic core that is surrounded by an organic corona (figure 1), which increases miscibility with a polymer. Because of a wide range of available organic functionalities, POSS have been incorporated into many polymer systems and found to improve the polymer thermo-oxidative stability.

Nanotechnology Safety

Nanotechnology Safety
Chapter 12. Nanotechnology Safety in the Marine Industry

by Jihua Gou,Jinfeng Zhuge

  • Publisher : Elsevier Inc. Chapters
  • Release : 2013-06-12
  • Pages : 256
  • ISBN : 0128083174
  • Language : En, Es, Fr & De
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Polymer matrix composites (PMCs) have been used extensively in the marine industry because of their attractive properties, including light weight, high stiffness-to-weight and strength-to-weight ratios, ease of installation on the field, high overall durability, and less susceptibility to environmental deterioration than conventional materials. However, due to their organic nature, PMCs will degrade, decompose, and yield smoke and toxic gases when subjected to fire, leading to catastrophic consequences. Therefore, the primary focus of this chapter is on the fire safety issues of PMCs and methods to improve the fire safety for marine applications. To improve these materials’ flame-retardant performance, traditional flame retardants are reviewed, including halogenated, intumescent, and intrinsic flame retardants. The flame-retardant application of nanomaterials such as nanoclay, carbon nanotubes, and polyhedral oligomeric silsesquioxane is then introduced. Finally, the concept of hybrid flame-retardant nanocomposite coating is presented. It is concluded that a desirable flame-retardant coating system should have such necessary characteristics, including low thermal conductivity in the thickness direction to prevent heat transfer, high in-planar thermal conductivity to dissipate heat as soon as possible, high thermal stability and heat capacity, low heat absorption, and compact char structure to prevent mass loss.

Refractive Index Engineering and Optical Properties Enhancement by Polymer Nanocomposites

Refractive Index Engineering and Optical Properties Enhancement by Polymer Nanocomposites
A Book

by Cheng Li

  • Publisher : Unknown Publisher
  • Release : 2016
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The major part of this dissertation discusses the engineering of the refractive index of materials using solution-processable polymer nanocomposites and their applications in building optical components and devices. Three particular polymer nanocomposites have been introduced to achieve materials with tunable refractive indices and enhanced optical properties, which can be used to manipulate the behavior of light or electromagnetic radiations. In the first system, polyhedral oligomeric silsesquioxane (POSS)/polymer nanocomposites are developed. Thin films with tunable, low refractive indicies were fabricated from the composites. The mechanical strength of these films was characterized, and their application in antireflective coatings is discussed. In the second system, a titanium oxide (TiO2)/polymer nanocomposite is developed. For these nanocomposites, a method for fabricating mesoporous TiO2 thin films with tunable refractive indices at room temperature is introduced. The low temperature strategy allows the deposition of mesoporous TiO2 based Bragg mirrors on polymeric substrates. The potential application of the TiO2 Bragg mirror as a gas sensor is discussed. Finally, a zirconium oxide (ZrO2)/polymer nanocomposite with a tunable refractive index is developed. The refractive index of the ZrO2 nanocomposites was tuned to match the index of a rare-earth ion doped nanoparticle. Highly transparent composites containing light emitting nanoparticles with minimum Rayleigh scattering can be achieved by blending the two nanoparticle systems in controlled amounts from solution. This is the first exhibition of the successful employment of hybrid polymer composites as a "refractive index matching" matrix, facilitating fabrication of highly transparent nanocomposites. The second part of this dissertation introduces a light-responsive block copolymer composite. Poly [poly(ethylene glycol) monomethyl ether monomethacrylate]-block-poly(ethyl methacrylate) was prepared using reversible addition-fragmentation chain transfer polymerization (RAFT). This block copolymer is an amorphous, phase mixed system at room temperature. The incorporation of organic additives with multiple carboxylic acid groups, such as mellitic acid, induces phase segregation in this system. Furthermore, the use of additives in which the hydrogen bond donating group is protected with an acid labile group in combination with a photo acid generator enables photo-induced ordering of the composite films. Adjacent disordered/ordered patterns can be obtained using this strategy due to the absence of PEO crystals.

Molecular Dynamics Simulations of Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxanes

Molecular Dynamics Simulations of Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxanes
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2004
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Molecular dynamics simulations were carried out on traditional polymers copolymerized with POSS (Polyhedral Oligomeric Silsesquioxanes) derivatives to identify the reason behind improved properties imparted to the conventional polymers with the chemical incorporation of POSS. Two classes of systems are used in the present study, namely the polystyrene and polymethyl methacrylate systems. Seven systems are studied in the polystyrene class. The effect of corner substituent groups of the POSS cage on the properties of the polymer nanocomposites was studied using the polystyrene. In addition, the effect of the type of cage structure on the properties was studied using T8, T10 and T12 POSS cage structures containing phenyl substituents on each POSS cage. Systems with polymethyl methacrylate were studied to analyze the effect of mole percent of POSS on the polymer properties, holding the corner substituents on the POSS unit constant. The corner function used was the isobutyl group. The properties analyzed using simulations include glass transition temperature, volumetric thermal expansion coefficient, X-ray scattering data, solubility parameter and mechanical properties. In both polystyrene and polymethyl methacrylate systems, simulations were also carried out on the pure parent polymers for the sake of comparison. The effect of forcefield on the predicted properties was studied using both COMPASS and PCFF forcefields. Performance analysis of the code used in the present simulation was done by analyzing the parallel run time of simulations involving pure atactic polystyrene.

Polymer Nanocomposite Membranes for Pervaporation

Polymer Nanocomposite Membranes for Pervaporation
A Book

by Sabu Thomas,Soney C. George,Thomasukutty Jose

  • Publisher : Unknown Publisher
  • Release : 2020-03
  • Pages : 500
  • ISBN : 0128167858
  • Language : En, Es, Fr & De
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Polymer Nanocomposite Membranes for Pervaporation assesses recent applications in the pervaporation performance of polymer nanocomposites of different length scales. The book discusses the effects of a range of nanofillers, their dispersion, the effect of different polymers, and organic and inorganic nanomaterials in the pervaporation process. In addition, the book explores how the different properties of a variety of nanocomposite materials make them better for use in different types of liquids, while also discussing the challenges of using different nanocomposites for this purpose effectively and safely. In particular, polymer nanocomposites for g nanoscale dispersion, filler/polymer interactions, and morphology are addressed. This is an important reference source for materials scientists, chemical engineers and environmental engineers who want to learn more about how polymer nanocomposites are being used to make the pervaporation separation process more effective.

Molecular Dynamics Simulations of Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxanes

Molecular Dynamics Simulations of Polymer Nanocomposites Containing Polyhedral Oligomeric Silsesquioxanes
A Book

by Reena R. Patel

  • Publisher : Unknown Publisher
  • Release : 2004
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Molecular dynamics simulations were carried out on traditional polymers copolymerized with POSS (Polyhedral Oligomeric Silsesquioxanes) derivatives to identify the reason behind improved properties imparted to the conventional polymers with the chemical incorporation of POSS. Two classes of systems are used in the present study, namely the polystyrene and polymethyl methacrylate systems. Seven systems are studied in the polystyrene class. The effect of corner substituent groups of the POSS cage on the properties of the polymer nanocomposites was studied using the polystyrene. In addition, the effect of the type of cage structure on the properties was studied using T8, T10 and T12 POSS cage structures containing phenyl substituents on each POSS cage. Systems with polymethyl methacrylate were studied to analyze the effect of mole percent of POSS on the polymer properties, holding the corner substituents on the POSS unit constant. The corner function used was the isobutyl group. The properties analyzed using simulations include glass transition temperature, volumetric thermal expansion coefficient, X-ray scattering data, solubility parameter and mechanical properties. In both polystyrene and polymethyl methacrylate systems, simulations were also carried out on the pure parent polymers for the sake of comparison. The effect of forcefield on the predicted properties was studied using both COMPASS and PCFF forcefields. Performance analysis of the code used in the present simulation was done by analyzing the parallel run time of simulations involving pure atactic polystyrene.

Characterization Techniques for Polymer Nanocomposites

Characterization Techniques for Polymer Nanocomposites
A Book

by Vikas Mittal

  • Publisher : John Wiley & Sons
  • Release : 2012-05-07
  • Pages : 378
  • ISBN : 3527654526
  • Language : En, Es, Fr & De
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With its focus on the characterization of nanocomposites using such techniques as x-ray diffraction and spectrometry, light and electron microscopy, thermogravimetric analysis, as well as nuclear magnetic resonance and mass spectroscopy, this book helps to correctly interpret the recorded data. Each chapter introduces a particular characterization method, along with its foundations, and makes the user aware of its benefits, but also of its drawbacks. As a result, the reader will be able to reliably predict the microstructure of the synthesized polymer nanocomposite and its thermal and mechanical properties, and so assess its suitability for a particular application. Belongs on the shelf of every product engineer.

The Next Generation of Silicon-Based Plastics: Polyhedral Oligomeric Silsesquioxane (POSS) Nanocomposites

The Next Generation of Silicon-Based Plastics: Polyhedral Oligomeric Silsesquioxane (POSS) Nanocomposites
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1997
  • Pages : 3
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The proposed operational requirements of future military, space, and commercial vehicles, have forced designers and engineers to increasingly incorporate lightweight polymeric structures into higher temperature Component applications. Consequently, existing hydrocarbon. based resin technology will be pushed to its critical thermal performance limits while material performance issues such as reduced flammability and retention of mechanical properties at elevated temperatures have not been satisfactorily resolved. Despite manufacturers' and molders' attempts to obtain new physical properties from the existing pool of polymer types, the low cost avenues of polymer-polymer blending and processing manipulations have only produced incremental improvements to properties. Surprisingly the development of new chemical feedstock technologies that may offer high-tech solutions to inherent material-property shortcomings have not been seriously pursued.

Nanotechnology in Textiles

Nanotechnology in Textiles
Advances and Developments in Polymer Nanocomposites

by Mangala Joshi

  • Publisher : CRC Press
  • Release : 2020-08-03
  • Pages : 910
  • ISBN : 1000091090
  • Language : En, Es, Fr & De
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In recent times, polymer nanocomposites have attracted a great deal of scientific interest due to their unique advantages over conventional plastic materials, such as superior strength, modulus, thermal stability, thermal and electrical conductivity, and gas barrier. They are finding real and fast-growing applications in wide-ranging fields such as automotive, aerospace, electronics, packaging, and sports. This book focuses on the development of polymer nanocomposites as an advanced material for textile applications, such as fibers, coatings, and nanofibers. It compiles and details cutting-edge research in the science and nanotechnology of textiles with special reference to polymer nanocomposites in the form of invited chapters from scientists and subject experts from various institutes from all over the world. They include authors who are actively involved in the research and development of polymer nanocomposites with a wide range of functions—including antimicrobial, flame-retardant, gas barrier, shape memory, sensor, and energy-scavenging—as well as medical applications, such as tissue engineering and wound dressings, to create a new range of smart and intelligent textiles. Edited by Mangala Joshi, a prominent nanotechnology researcher at the premier Indian Institute of Technology, Delhi, India, this book will appeal to anyone involved in nanotechnology, nanocomposites, advanced materials, polymers, fibers and textiles, and technical textiles.

Rheology and Processing of Polymer Nanocomposites

Rheology and Processing of Polymer Nanocomposites
A Book

by Sabu Thomas,Rene Muller,Jiji Abraham

  • Publisher : John Wiley & Sons
  • Release : 2016-10-10
  • Pages : 616
  • ISBN : 1118969790
  • Language : En, Es, Fr & De
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Rheology and Processing of Polymer Nanocomposites examines the current state of the art and new challenges in the characterization of nanofiller/polymer interactions, nanofiller dispersion, distribution, filler-filler interactions and interfaces in polymer nanocomposites. A one-stop reference resource for important research accomplishments in this area, it benefits academics, researchers, scientists, and engineers in the field of polymer nanocomposites in their daily work.

Nanomaterials and Polymer Nanocomposites

Nanomaterials and Polymer Nanocomposites
Raw Materials to Applications

by Niranjan Karak

  • Publisher : Elsevier
  • Release : 2018-10-24
  • Pages : 432
  • ISBN : 0128146168
  • Language : En, Es, Fr & De
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Nanomaterials and Polymer Nanocomposites: Raw Materials to Applications brings together the most recent research in nanoparticles and polymer nanocomposites for a range of applications. The book's coverage is comprehensive, starting with synthesis techniques, then moving to characterization and applications of several different classes of nanomaterial and nanoparticle in nanocomposites. By presenting different nanomaterials, such as metal and metal oxides, clay and POSS, carbon nanotubes, cellulose and bio-based polymers in a structured manner, the book enables an efficient comparison of properties and capabilities for these advanced materials, making it relevant both for researchers in an academic environment and also industrial R&D. This book is particularly distinctive because it centers on the raw materials on which the nanocomposites are based, the biological properties of the range of materials discussed, and the environmental and economic considerations of different polymer systems. Presents a thorough, up-to-date review of the latest advances and developments in the field of nanomaterials and polymer nanocomposites, with a particular focus on raw materials Includes comprehensive coverage from historical backgrounds, synthesis techniques, characterization, and a detailed look at new and emerging applications for polymer nanocomposites Provides a range of different material classes, including metal and metal oxides, biopolymers, graphene and cellulose, among others

Non-Linear Viscoelasticity of Rubber Composites and Nanocomposites

Non-Linear Viscoelasticity of Rubber Composites and Nanocomposites
Influence of Filler Geometry and Size in Different Length Scales

by Deepalekshmi Ponnamma,Sabu Thomas

  • Publisher : Springer
  • Release : 2014-11-20
  • Pages : 309
  • ISBN : 3319087029
  • Language : En, Es, Fr & De
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Advances in Polymer Science enjoys a longstanding tradition and good reputation in its community. Each volume is dedicated to a current topic and each review critically surveys one aspect of that topic, to place it within the context of the volume. The volumes typically summarize the significant developments of the last 5 to 10 years and discuss them critically, presenting selected examples, explaining and illustrating the important principles and bringing together many important references of primary literature. On that basis, future research directions in the area can be discussed. Advances in Polymer Science volumes thus are important references for every polymer scientist, as well as for other scientists interested in polymer science - as an introduction to a neighboring field, or as a compilation of detailed information for the specialist.

Flame Retardant Polymer Nanocomposites

Flame Retardant Polymer Nanocomposites
A Book

by Alexander B. Morgan,Charles A. Wilkie

  • Publisher : John Wiley & Sons
  • Release : 2007-04-13
  • Pages : 448
  • ISBN : 0471734268
  • Language : En, Es, Fr & De
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Flame Retardant Polymer Nanocomposites takes a comprehensive look at polymer nanocomposites for flame retardancy applications and includes nanocomposite fundamentals (theory, design, synthesis, characterization) as well as polymer flammability fundamentals with emphasis on how nanocomposites affect flammability. The book has practical examples from literature, patents, and existing commercial products. Readers can design new work based upon the material in the book or use it as a handy reference for interpreting existing work and results.

POSS-Based Polymers

POSS-Based Polymers
A Book

by Ignazio Blanco

  • Publisher : MDPI
  • Release : 2019-12-19
  • Pages : 310
  • ISBN : 3039219944
  • Language : En, Es, Fr & De
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The combination of functional polymers with inorganic nanostructured compounds has become a major area of research and technological development owing to the remarkable properties and multifunctionalities deriving from their nano and hybrid structures. In this context, polyhedral oligomeric silsesquioxanes (POSSs) have increasing importance and a dominant position with respect to the reinforcement of polymeric materials. Although POSSs were first described in 1946 by Scott, these materials, however, have not immediately been successful if we consider that, starting from 1946 and up to 1995, we find in the literature 85 manuscripts regarding POSSs; which means that less than two papers per year were published over 50 years. Since 1995, we observe an exponential growth of scientific manuscripts concerning POSSs. It is changing from an annual average of 20 manuscripts for the period 1995–2000 to an annual average of about 400 manuscripts, with an increase of 2800%. The introduction of POSSs inorganic nanostructures into polymers gives rise to polymer nanostructured materials (PNMs) with interesting mechanical and physical properties, thus representing a radical alternative to the traditional filled polymers or polymer compositions.

Polymer Nanocomposite Coatings

Polymer Nanocomposite Coatings
A Book

by Vikas Mittal

  • Publisher : CRC Press
  • Release : 2016-04-19
  • Pages : 360
  • ISBN : 1466557311
  • Language : En, Es, Fr & De
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This work explores the use of composite nanotechnology for thin coatings on various substrates. It compiles recent advances in nanocomposite coatings for experienced researchers and provides background information for those new to the field. The book not only explains the synthesis of bulk nanocomposite materials, it describes their application in

Fundamentals, Properties, and Applications of Polymer Nanocomposites

Fundamentals, Properties, and Applications of Polymer Nanocomposites
A Book

by Joseph H. Koo

  • Publisher : Cambridge University Press
  • Release : 2016-10-31
  • Pages : 129
  • ISBN : 1316094413
  • Language : En, Es, Fr & De
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This book is focused primarily on polymer nanocomposites, based on the author's research experience as well as open literature. The environmental health and safety aspects of nanomaterials and polymer nanocomposites, risk assessment and safety standards, and fire toxicity of polymer nanocomposites, are studied. In the final chapter, a brief overview of opportunities, trends, and challenges of polymer nanocomposites are included. Throughout the book, the theme is developed that polymer nanocomposites are a whole family of polymeric materials whose properties are capable of being tailored to meet specific applications. This volume serves as a general introduction to students and researchers just entering the field and to scholars from other subfields seeking information.