November 26, 2020

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Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Sabu Thomas,Robert Shanks,Sarath Chandran
Publisher : William Andrew
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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Over 30% of commercial polymers are blends or alloys or one kind or another. Nanostructured blends offer the scientist or plastics engineer a new range of possibilities with characteristics including thermodynamic stablility; the potential to improve material transparency, creep and solvent resistance; the potential to simultaneously increase tensile strength and ductility; superior rheological properties; and relatively low cost. Nanostructured Polymer Blends opens up immense structural possibilities via chemical and mechanical modifications that generate novel properties and functions and high-performance characteristics at a low cost. The emerging applications of these new materials cover a wide range of industry sectors, encompassing the coatings and adhesives industry, electronics, energy (photovoltaics), aerospace and medical devices (where polymer blends provide innovations in biocompatible materials). This book explains the science of nanostructure formation and the nature of interphase formations, demystifies the design of nanostructured blends to achieve specific properties, and introduces the applications for this important new class of nanomaterial. All the key topics related to recent advances in blends are covered: IPNs, phase morphologies, composites and nanocomposites, nanostructure formation, the chemistry and structure of additives, etc. Introduces the science and technology of nanostructured polymer blends – and the procedures involved in melt blending and chemical blending to produce new materials with specific performance characteristics Unlocks the potential of nanostructured polymer blends for applications across sectors, including electronics, energy/photovoltaics, aerospace/automotive, and medical devices (biocompatible polymers) Explains the performance benefits in areas including rheological properties, thermodynamic stablility, material transparency, solvent resistance, etc.

Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Roberto Scaffaro,Luigi Botta
Publisher : Elsevier Inc. Chapters
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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The usefulness of any material, including nanocomposite polymer blends, depends on its degradability and durability. Thus, this chapter reviews the status of the research on degradation of nanocomposite polymer blends and, in particular, on clay-nanocomposite polymer blends, paying particular attention to both the role of the filler and the role of the blend morphology and composition. The results of recent research indicate that the clay has two opposing effects on the thermal stability of a nanocomposite polymer blend: (1) a promoter effect of the polymer matrix degradation, which decreases the thermal stability, and (2) a barrier effect, which improves the thermal stability. Moreover, the presence of organoclays generally reduces the photostability of nanocomposite polymer blends. Despite the effect of the filler, blend morphology and blend composition can significantly affect, either positively or negatively, the degradation behavior of the polymer blend nanocomposites.

Design and Applications of Nanostructured Polymer Blends and Nanocomposite Systems

Design and Applications of Nanostructured Polymer Blends and Nanocomposite Systems
Author : Sabu Thomas,Robert Shanks,Sarath Chandran
Publisher : William Andrew
Release Date : 2015-09-22
Category : Technology & Engineering
Total pages :442
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Design and Applications of Nanostructured Polymer Blend and Nanocomposite Systems offers readers an intelligent, thorough introduction to the design and applications of this new generation of designer polymers with customized properties. The book assembles and covers, in a unified way, the state-of-the-art developments of this less explored type of material. With a focus on nanostructured polymer blends, the book discusses the science of nanostructure formation and the potential performance benefits of nanostructured polymer blends and composites for applications across many sectors: electronics, coatings, adhesives, energy (photovoltaics), aerospace, automotive, and medical devices (biocompatible polymers). The book also describes the design, morphology, and structure of nanostructured polymer composites and blends to achieve specific properties. Covers all important information for designing and selecting the right nanostructured polymer system Provides specialized knowledge on self-repairing, nanofibre and nanostructured multiphase materials, as well as evaluation and testing of nanostructured polymer systems Serves as a reference guide for development of new products in industries ranging from electronics, coatings, and energy, to transport and medical applications Describes the design, morphology, and structure of nanostructured polymer composites and blends to achieve specific properties

Nanostructured Polymer Blends and Composites in Textiles

Nanostructured Polymer Blends and Composites in Textiles
Author : Mihai Ciocoiu,Seghir Maamir
Publisher : CRC Press
Release Date : 2016-01-05
Category : Technology & Engineering
Total pages :444
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This new volume reviews recent academic and technological developments behind new engineered modified nanotextile materials. The developments in textiles using nanotechnology give ordinary materials improved properties, such as better water resistance, enhanced moisture and odor reduction, increased strength and elasticity, and resistance to bacteria, among other improvements. The research reported in this book presents state-of-the-art technology in modern materials with an emphasis on the rapidly growing technologies in textile engineering. Several innovative applications for different materials are described in considerable detail with emphasis on the experimental data that supports these new applications. From nano-fibers to chemical materials, creative modifications concerning new nanocomposites are described that could one day become commonplace. The book covers a host of topics in this area, including the design of new textile products, moisture and heat transfer in clothing, developments in electrospinning, new applications, nanotextile and tissue engineering from a biological perspective, and more. The book is intended for researchers and those interested in future developments in mechanical and physicochemical characteristics of modified nanotextile materials and polymer blends. The book will also be a useful tool for students and researchers, providing helpful insights into new evolving research areas in nanostructured polymer blends and composites in textiles.

Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Chandran C. Sarath,Robert A. Shanks,S. Thomas
Publisher : Elsevier Inc. Chapters
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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Miscibility and compatibility in polymer blends is a topic of great academic and industrial importance. This is because miscibility and compatibility contribute to morphology, properties, and performance. Miscibility results in one phase; compatibility creates a disperse phase with size and stability determined by interfacial interactions. Miscible polymer properties are averaged similar to a plasticizer polymer, and compatible polymers retain properties of each component, such as toughening or reinforcement. With miscible polymer blends the continuous phase dominates properties; the disperse phase contributes via stress transfer. This chapter revisits the criteria for miscibility or compatibility in polymer blends and the contributors of compatibility compared with miscibility and incompatibility. Development of copolymers and their blending with thermosets and thermoplastics result in complex two-phase morphologies. The dynamics of phase separation observed in polymer blends leading to different morphologies and the criteria for phase separation is explained. A nanometer-dispersed phase requires strong interfacial interactions to stabilize the large interfacial area, and this is favored by rapid spinodal phase separation compared with size diminution by high shear. Nanoblends open up a new arena for polymer blends, and research shows that nanoblends have outstanding optical and mechanical properties.

Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Golap Kalita,Masayoshi Umeno,Masaki Tanemura
Publisher : Elsevier Inc. Chapters
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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Blending conducting polymers with inorganic nanostructures has attracted significant interest as a means of combining the desirable physical and optoelectronic properties of both materials. This chapter explains the fabrication and characterization of silicon (Si) nanostructures and blending them with conducting polymers. Si nanocrystals, nanowires, and nanocones were synthesized from Si wafers to fabricate high efficiency solar cells at very low processing cost. Conducting polymers such as poly(3-octylthiophene) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) were solution casted on the nanostructured Si surface to fabricate a heterojunction. Recent development of the fabrication process and characteristics of solar cells with different silicon nanostructures and conducting polymers are discussed.

Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Roberto Scaffaro,Luigi Botta
Publisher : Elsevier Inc. Chapters
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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Nanofillers can play two important roles in polymer blends. The first is the improvement of various properties such as mechanical, barrier, thermal, flame retardancy, and electrical properties. The second is the modification of miscibility/compatibility and morphology of polymer blends. The mechanism of action of nanoparticles to modify the morphology, interfacial properties, and performance of immiscible polymer blends relies on their localization, their interactions with polymer components, and the way these additives disperse within the polymer blend. The objective of this chapter is to review the research on nanofilled thermoplastic/thermoplastic polymer blends, paying particular attention both to the distribution of nanoparticles inside a binary polymer blend and to the effect of nanofillers on the morphology and on the properties of the thermoplastic polymer blends. In a large majority of cases, thermoplastic polymer blends filled with nanoparticles show better compatibility in terms of morphology size than pure blends. Moreover, the formation of a cocontinuous structure is promoted by the presence of the nanofiller.

Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Gity Mir Mohamad Sadeghi,Mahsa Sayaf
Publisher : Elsevier Inc. Chapters
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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Block copolymers (BCPs) consist of two or more chemically different polymers connected covalently, and are polymer alloys. Due to their thermodynamic incompatibility and chain connectivity, the phase separation between two (or more) blocks occurs only in a tens of nanometers range. Nanostructures are based on block copolymer self-assembly. They are functional nanomaterials less than 100nm in size and have received extensive scientific and technological attention due to their potential applications in electronic, biomedical, and optical materials. This chapter examines a variety of different synthetic strategies for preparation of linear diblock copolymers by anionic polymerization. Triblocks can be synthesized according to an appropriate synthetic pathway, depending on the monomers used and their sequence in the triblock chain. Nonlinear block copolymers including star block copolymers, graft copolymers, miktoarm star copolymers, cyclic block copolymers, and other complex architectures are explained. Microphase separation drives BCPs to self-assemble, resulting in ordered nanostructures, including spheres, cylinders, gyroids, and lamellae, depending on the composition of the BCP. In nanotechnology, self-assembly (SA) underlies various types of molecular structures built from nanoparticles, nanotubes, or nanorods. Supramolecular structures generated from amphiphilic block copolymers are characterized by a slow rate of intermicellar chain exchange which makes them interesting for a variety of applications. Basic principles of self-assembly and micellization of block copolymers in dilute solution, methods for stabilization of the macromolecular aggregates, are discussed. Stabilized nanoparticles, the so-called “smart materials,” which show responses to environmental changes (pH, temperature, ionic strength, etc.), are presented with a focus on their applications.

Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Kokkarachedu Varaprasad,Emmanuel Rotimi Sadiku,Koduri Ramam,Jaragula Jayaramudu,G. Siva Mohan Reddy
Publisher : Elsevier Inc. Chapters
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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Nanostructured hydrogels represent a unique class of materials that synergizes the advantageous features of hydrogels. Research into nanostructured hydrogels for biomedical applications has seen great progress in recent years owing to their unlimited potential to advance human health. The development of nanotechnology provides opportunities to characterize, manipulate, and organize matter systematically at the nanometer scale. This is because nanostructured systems in general and nanostructured polymer hydrogels in particular have noble advantages as transporters for a wide range of drugs and tissue engineering scaffolds for biomedical (therapeutic) applications. This chapter explains the design and development of different nanostructured hydrogels and their applications in the biomedical field.

Nanostructured Polymer Blends

Nanostructured Polymer Blends
Author : Goddeti Siva Mohan Reddy,Jaragula Jayaramudu,Kokkarachedu Varaprasad,Rotimi Sadiku,Shanavas Abdul Jailani,Blessing Atim Aderibigbe
Publisher : Elsevier Inc. Chapters
Release Date : 2013-11-28
Category : Technology & Engineering
Total pages :576
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Liquid crystals constitute a fascinating class of soft condensed matter characterized by the counterintuitive combination of fluidity and long-range order. Today liquid crystals are best known for their exceptionally successful application in flat panel displays, but they actually exhibit a plethora of unique and attractive properties that offer tremendous potential for fundamental science as well as innovative applications well beyond the realm of displays. This full breadth of the liquid crystalline state of matter is becoming increasingly recognized and numerous new and exciting lines of research are being opened up. In this chapter we look at these exciting developments, focusing primarily on the physics aspects of the new research thrusts, in which thermotropic as well as lyotropic liquid crystals often meet other types of soft matter, such as polymers and colloidal nano- or microparticle dispersions. Because the field is also of interest for researchers who may not have a liquid crystal background we begin with a concise introduction to the liquid crystalline state of matter and the key concepts of the research field. We then discuss nanostructured liquid crystals, followed by applications of nanostructured liquid crystals.

Micro- and Nanostructured Polymer Blends

Micro- and Nanostructured Polymer Blends
Author : Holger Ruckdäschel
Publisher : Unknown
Release Date : 2008
Category :
Total pages :310
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Nanostructured Immiscible Polymer Blends

Nanostructured Immiscible Polymer Blends
Author : Suprakas Sinha Ray,Reza Salehiyan
Publisher : Elsevier
Release Date : 2019-09-17
Category : Technology & Engineering
Total pages :240
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Nanostructured Immiscible Polymer Blends: Migration and Interface covers a wide range of nanoparticle types, emphasizing the mechanisms and parameters involved in the migration of nanofillers inside immiscible polymer blends. This book explores the influence of nanoparticle migration on the localization, and hence, morphology development, electrical conductivity, and met-rheological properties of blended composite materials. As the influence of solid particles, ranging in size from several hundred nanometers to a few microns in immiscible polymer blends has been extensively studied for use as compatibilizers, morphology stabilizers, and reinforcement agents, this book is a timely resource. Outlines techniques used to prepare nanoparticles-modified immiscible polymer blend composites Explains the structural and morphological development, and melt-state rheological behaviors of nanoparticles-modified immiscible polymer blend composites Discusses major industrial applications

Micro- and Nanostructured Multiphase Polymer Blend Systems

Micro- and Nanostructured Multiphase Polymer Blend Systems
Author : Charef Harrats,Sabu Thomas,Gabriel Groeninckx
Publisher : CRC Press
Release Date : 2005-09-29
Category : Science
Total pages :456
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Micro- and Nanostructured Multiphase Polymer Blend Systems: Phase Morphology and Interfaces focuses on the formation of phase morphology in polymer blends and copolymers and considers various types of blends including thermosets, thermoplastics, thermoplastic vulcanizates, and structured copolymers. The book carefully debates the processing

Micro- and Nanostructured Polymer Systems

Micro- and Nanostructured Polymer Systems
Author : Sabu Thomas,Robert Shanks,Jithin Joy
Publisher : CRC Press
Release Date : 2016-01-05
Category : Technology & Engineering
Total pages :348
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This book focuses on the recent trends in micro- and nano-structured polymer systems, particularly natural polymers, biopolymers, biomaterials, and their composites, blends, and IPNs. This valuable volume covers the occurrence, synthesis, isolation, production, properties and applications, modification, as well as the relevant analysis techniques to reveal the structures and properties of polymer systems. Biobased polymer blends and composites occupy a unique position in the dynamic world of new biomaterials. The growing need for lubricious coatings and surfaces in medical devices—an outcome of the move from invasive to noninvasive medicines and procedures—is playing a major role in the advancement of biomaterials technology. Natural polymers have attained their cutting-edge technology through various platforms, and this book presents a multitude of information about them. Topics include biopolymer–synthetic systems, nanomaterial–polymer structures, multi-characterization techniques, polymer blends and composites, polymer gels and polyelectrolytes, and many other interesting aspects of interests to researchers. This book will be valuable to scientists, physicians, pharmacists, engineers, and other specialists in a variety of disciplines, both academic and industrial.

Fracture Mechanics of Nanostructured Polymer Blends with Janus Particles

Fracture Mechanics of Nanostructured Polymer Blends with Janus Particles
Author : Ronak Bahrami
Publisher : Unknown
Release Date : 2018
Category :
Total pages :129
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