Download or read book Layer by Layer Directly Assembly of Polyelectrolyte Multilayers with Foaming Structures written by Lihua Xu and published by . This book was released on 2015 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, dynamic Layer-by-Layer (LbL) assembly of multilayer thin films has been widely recognized for many reasons, especially for its versatile functionality and ease of fabrication. Films can be fabricated towards huge amounts of materials, such as polyelectrolytes, organic components, polymeric microgels, etc. Through the long history of LbL assembly research, few papers proposed ideas of making porous films or foamed films directly or indirectly, as foamed material contained plenty of pores, which could be used in insulation materials and fast food-packages. In several papers, the step of acid treatment aimed for irreversible structure transformation applied into films fabricated by the LbL assembly method. This indirect method makes procedures more complex, so direct fabrication with LbL is necessary. However, time-consuming problems and challenges from external environmental factors still limits the development of this technique. In this thesis, a facile fabrication of porous films through the LbL assembly method was introduced. Strong polyelectrolyte, polycation poly(diallyldimethylammonium-chloride) (PolyDADMAC) and polyanion poly(styrene sulfonate acid) (PSSA) are utilized as the original material. And PolyDADMAC was slightly modified by sodium hydroxide (NaOH) and carbon dioxide (CO2) in order to get the bicarbonate structure at the side groups along the chain of the polyelectrolyte. In order to deeply study the films, some other particles, such as the surfactant brij-76 and RDS laponite were added into certain solutions for comparison. Films were achieved by alternately putting clean glass slides into the polycation and polyanion solutions with the rinsing step in between. 20-bilayer film can be achieved after repeating the procedures above 20 times. The principle is that the bicarbonate functional group will react with the hydrogen ions for the sake of letting the gas carbon dioxide out and then make the porous structure throughout the film. The morphology of the films measured by an atomic force microscope (AFM) and a scanning electron microscope (SEM) shows that porous structures are obvious through the whole film when no sodium bicarbonate (NaHCO3) is added into the anion solution. The results help to solve the problem of directly making the foaming films as well as simplifying the procedures.

Download or read book Engineering the Microfabrication of Layer by layer Polyelectrolyte Assembly written by Sarah Louise Clark and published by . This book was released on 1999 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamental Studies of Polyelectrolyte Multilayer Films written by Adam John Nolte and published by . This book was released on 2007 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyelectrolyte multilayers (PEMs) are a versatile type of thin film that is created via layer-by-layer assembly of positively and negatively charged polymers from aqueous solutions. Precise control of the PEM thickness, chemical functionality, and molecular architecture is made possible by changing the polyelectrolytes and assembly conditions during film growth, allowing films to be designed with properties suitable for a given application. This thesis elucidates the intra-film structure and interactions of PEMs through the use of optical, mechanical, and chemical techniques. PEM rugate filters, wherein the refractive index varies through the depth of the film in a continuous, periodic fashion, were constructed by confining silver nanoparticle growth to layers of nanometer-scale thickness. The ability to construct such structures is shown to be dependent on the ability to precisely control the concentration of metal-binding carboxylic acid groups throughout the depth of the film. Software to enable the computation design and optical simulation of these and similar structures was developed.

Download or read book Self assembly Stability Studies and Computer Modeling of Ultra Thin Protein polyelectrolyte Multilayer Films written by Venkateswarlu Panchagnula and published by . This book was released on 2005 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Layer by layer Assembly of Polyelectrolyte Multilayers in Cell Patterning Technology written by Aleksandr John White and published by . This book was released on 2002 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of Layer by layer Polyelectrolyte Adsorption written by Christophe Jean-Franc̦ois Lefaux and published by . This book was released on 2004 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multilayer Thin Films written by Gero Decher and published by John Wiley & Sons. This book was released on 2012-05-07 with total page 1157 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second, comprehensive edition of the pioneering book in this fi eld has been completely revised and extended, now stretching to two volumes. The result is a comprehensive summary of layer-by-layer assembled, truly hybrid nanomaterials and thin fi lms, covering organic, inorganic, colloidal, macromolecular, and biological components, as well as the assembly of nanoscale fi lms derived from them on surfaces. These two volumes are essential for anyone working in the field, as well as scientists and researchers active in materials development, who needs the key knowledge provided herein for linking the field of molecular self-assembly with the bio- and materials sciences.

Download or read book 2D Metal Carbides and Nitrides MXenes written by Babak Anasori and published by Springer Nature. This book was released on 2019-10-30 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the rapidly expanding field of two-dimensional (2D) transition metal carbides and nitrides (MXenes). It covers fundamental knowledge on synthesis, structure, and properties of these new materials, and a description of their processing, scale-up and emerging applications. The ways in which the quickly expanding family of MXenes can outperform other novel nanomaterials in a variety of applications, spanning from energy storage and conversion to electronics; from water science to transportation; and in defense and medical applications, are discussed in detail.

Download or read book Hybrid Polymer Composite Materials Structure and Chemistry written by Vijay Kumar Thakur and published by Woodhead Publishing. This book was released on 2017-06-03 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid Polymer Composite Materials: Volume 1: Structure and Chemistry presents the latest on these composite materials that can best be described as materials that are comprised of synthetic polymers and biological/inorganic/organic derived constituents. The combination of unique properties that emerge as a consequence of the particular arrangement and interactions between the different constituents provides immense opportunities for advanced material technologies. This series of four volumes brings an interdisciplinary effort to accomplish a more detailed understanding of the interplay between synthesis, structure, characterization, processing, applications, and performance of these advanced materials, with this volume focusing on their structure and chemistry. - Provides a clear understanding of the present state-of-the-art and the growing utility of hybrid polymer composite materials - Includes contributions from world renowned experts and discusses the combination of different kinds of materials procured from diverse resources - Discusses their synthesis, chemistry, processing, fundamental properties, and applications - Provides insights on the potential of hybrid polymer composite materials for advanced applications

Download or read book Polyelectrolytes with Defined Molecular Architecture I written by Manfred Schmidt and published by Springer. This book was released on 2004-01-21 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Praise for Ed M.Schmidt's, Polyelectrolytes with Defined Molecular Architecture I POLYMERNEWS "All articles are well prepared and structured. Although not written as textbooks, general introductions of the chapters provide basic knowledge of the separate fields, methods and theoretical background. Therefore, the volumes can be recommended not only for specialists in the field. The books make an important contribution to polyelectrolyte research and application. I recommend the volumes to all scientists and engineers actively dealing with polyelectrolytes."

Download or read book Self Assembly Processes at Interfaces written by Vincent Ball and published by Academic Press. This book was released on 2018-02-13 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-Assembly Processes at Interfaces: Multiscale Phenomena provides the conceptual and unifying view of adsorption, self-assembly, and grafting processes at solid–liquid and liquid–gas interfaces, also describing experimental methods where applicable. An invaluable resource for (post)-graduate students looking to bridge the gap between acquiring the field's existing knowledge and the creation of new insights, the book recalls fundamental concepts, giving rigorous, but first-principle-based, calculations and exercises, and showing how these concepts have been used in recent research articles. Readers will find guidelines on how best to start research in the field of surface chemistry with biological macromolecules and molecules able to undergo self-assembly process at interfaces in the presence of a liquid, along with discussions on the very fundamental aspects and applications using concepts of biomimetic chemistry. By highlighting the interdisciplinary aspects of the field of self-assembly at interfaces, the book is an ideal resource for chemical engineers, chemists, physicists, and biologists. In addition, important equations are demonstrated on the basis of fundamental concepts, and overly complex mathematical developments are avoided. - Presents an interdisciplinary work that is ideal for chemical engineers, chemists, physicists, and biologists - Provides a unifying view of the field, from fundamentals, to methods and applications - Includes concepts applicable at both solid–liquid and liquid–gas interfaces

Download or read book Novel Fire Retardant Polymers and Composite Materials written by De-Yi Wang and published by Woodhead Publishing. This book was released on 2016-08-21 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel Fire Retardant Polymers and Composite Materials reviews the latest scientific developments and technological advances in the design and manufacture of fire retardant polymers and composite materials. Fire retardant polymeric materials are used in a broad range of applications in fields such as aviation, automotive, computer, construction, electronics, and telecommunications. It is essential to have a better understanding of the scientific technology used in the design and manufacture of fire-resistant materials and their end products. This book includes the latest developments in fire retardant technologies for different polymeric material systems, such as PU, PP, PE, PLA, epoxy, rubber, textile, phenol resin, and PA, etc. - Provides cutting-edge research in flame retardant materials, relevant to both scientific and industrial applications - Presents the latest and most up-to-date fire retardant technologies - Discusses the most popular fire retardant polymer systems - Includes the latest developments in fire retardant technologies for different polymeric material systems, such as PU, PP, PE, PLA, epoxy, rubber, textile, phenol resin, and PA

Download or read book Advanced Green Composites written by Anil N. Netravali and published by John Wiley & Sons. This book was released on 2018-10-04 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most composites, particularly those made using thermoset resins, cannot be recycled or reused. As a result, most of them end up in landfills at the end of their useful life which is neither sustainable nor environment-friendly. Various laws enacted by Governments around the world and heightened global awareness about sustainability and global warming is changing this situation. Significant research is being conducted in developing and utilizing sustainable fibers and resins, mostly derived from plant, to fabricate 'Green' composites. The significant progress in the past 20 or so years in this field has led to the development of green composites with high strength or so called Advanced Green Composites. More interestingly, green composites have also acquired various different properties such as fire resistance, transparency, barrier to gases and others. The term 'advanced' which only included high strength and stiffness now includes all these special properties. The world is on the cusp of a major change, and once fully developed, such composites could be used in applications ranging from automobiles to sporting goods, from circuit boards to housing and from furniture to packaging. This book, by presenting the state-of-the-art developments in many aspects of advanced green composites adds significantly to the knowledge base that is critical for their success of expanding their use in applications never seen before. The chapters are written by world’s leading researchers and present in-depth information in a simple way. This provides readers and researchers the latest developments in the field of 'Green' resins (with ways of strengthening them), High Strength Green Fibers (including micro and nano-cellulose fibrils/fibers) and Green Composites in the first few chapters. The introductory chapter summarizes the consequences of using conventional, petroleum-based materials and the need for green composites as well as the progress being made in this field. After that the book delves in to Advanced Green Composites in a broader sense and includes chapters on High Strength Green Composites, Self-healing Green Composites, Transparent Green Composites, All-cellulose composites, Toughened Green Composites, Green Biofoams, Bioinspired Shape Memory Composites, etc. The chapters are written by the experts who are highly respected in their fields.

Download or read book Polymer Thin Films written by Abbass A. Hashim and published by BoD – Books on Demand. This book was released on 2010-04-01 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a timely overview of a current state of knowledge of the use of polymer thin film for important technological applications. Polymer thin film book covers the scientific principles and technologies that are necessary to implement the use of polymer electronic device. A wide-ranging and definitive coverage of this emerging field is provided for both academic and practicing scientists. The book is intended to enable readers with a specific background, e.g. polymer nanotechnology, to become acquainted with other specialist aspects of this multidisciplinary field. Part A of the book covers the fundamental of the key aspect related to the development and improvement of polymer thin film technology and part B covers more advanced aspects of the technology are dealt with nano-polymer layer which provide an up-to-date survey of current research directions in the area of polymer thin film and its application skills.

Download or read book Flame Retardant Polymeric Materials written by Yuan Hu and published by CRC Press. This book was released on 2019-08-22 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flame Retardant Polymeric Materials provides a comprehensive and up-to-date overview of the field, from basic properties and mechanisms of action for flame retardants to emerging methods, materials, and industrial applications. With over 120 black and white images, Hu and Wang cover the latest in the development of novel polymer nanocomposites such as graphene, CNTs, LDHs, POSS, and techniques such as layer-by-layer assembly. These expert authors also include discussions on the important flame-retardant systems based on phosphorus, silicon, and boron. In doing so, they highlight the use of flame-retardants in varying industries, for example, construction, textiles, and aviation. This comprehensive handbook is an essential read for students and academics of physics with a particular interest in flame-retardant materials. It would also be recommended for professionals within the materials science and engineering fields.

Download or read book Green Chemistry for Sustainable Textiles written by Nabil Ibrahim and published by Woodhead Publishing. This book was released on 2021-07-21 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green Chemistry for Sustainable Textiles: Modern Design and Approaches provides a comprehensive survey of the latest methods in green chemistry for the reduction of the textile industry's environmental impact. In recent years industrial R&D has been exploring more sustainable chemicals as well as eco-friendly technologies in the textile wet processing chain, leading to a range of new techniques for sustainable textile manufacture. This book discusses and explores basic principles of green chemistry and their implementation along with other aspects of cleaner production strategies, as well as new and emerging textile technologies, providing a comprehensive reference for readers at all levels.Potential benefits to industry from the techniques covered in this book include: Savings in water, energy and chemical consumption, waste minimization as well as disposal cost reduction, and production of high added value sustainable textile products to satisfy consumer demands for comfort, safety, aesthetic, and multi-functional performance properties. - Innovative emerging methods are covered as well as popular current technologies, creating a comprehensive reference that facilitates comparisons between methods - Evaluates the fundamental green chemistry principles as drivers for textile sustainability - Explains how and why to use renewable green chemicals in the textile wet processing chain

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2692 pages. Available in PDF, EPUB and Kindle. Book excerpt: