Metallic Covalent Polymers
Author | : JoAnn Wright Milliken |
Publisher | : |
Total Pages | : 286 |
Release | : 1980 |
Genre | : Solid state chemistry |
ISBN | : |
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Author | : JoAnn Wright Milliken |
Publisher | : |
Total Pages | : 286 |
Release | : 1980 |
Genre | : Solid state chemistry |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 12 |
Release | : 1980 |
Genre | : |
ISBN | : |
POLYACETYLENE, (CH)x, is the simplest possible conjugated organic polymer and is therefore of special fundamental interest. It can be prepared in the form of lustrous, silvery, flexible, polycrystalline films having any desired cis/trans content by catalytic polymerization of gaseous acetylene, C2H2. The cis-rich films can be stretched easily at room temperature in excess of three times their original length with concomitant partial alignment of the (CH)x fibrils. Dark red gels of toluene in (CH)x may be prepared using a lower catalyst concentration. Highly porous, very low density, 'foam-like' (CH)x can be obtained from these gels. Both cis- and trans-(CH)x are p-type semiconductors which can be treated with a variety of p- or n-type dopants with concomitant increase in conductivity to give a series of semiconductors and ultimately, 'organic metals'. This report will be directed primarily towards a description of the more chemically oriented aspects of (CH)x and its derivatives. (Author).
Author | : Bo Wang |
Publisher | : Royal Society of Chemistry |
Total Pages | : 407 |
Release | : 2021-11-26 |
Genre | : Science |
ISBN | : 1839161531 |
This book documents the latest research progress in MOF/COF-polymer hybrid materials and reviews and summarises hybridization strategies to achieve MOF/COF polymeric composites.
Author | : Alan J. Heeger |
Publisher | : OUP Oxford |
Total Pages | : 288 |
Release | : 2010-07-29 |
Genre | : Science |
ISBN | : 0198528647 |
The unique properties of conducting and semiconducting (conjugated) polymers make them one of the most attractive areas of interdisciplinary materials science and technology. Written by a pioneer in the field, this book is the first aimed at teaching graduate students, postdoctoral scientists, and specialists in industry about this exciting field.
Author | : Anatoly D. Pomogailo |
Publisher | : CRC Press |
Total Pages | : 176 |
Release | : 2018-01-31 |
Genre | : Science |
ISBN | : 1351085506 |
This book overviews methods for the synthesis of metal-containing monomers with various types of metal bonds to the organic moiety of the molecule, such as ionic, covalent, donor-acceptor, and others. Published data on homopolymerization, copolymerization, and graft polymerization of these monomers are generalized. Synthesis and Polymerization of Metal-Containing Monomers discusses features typical of the molecular and structural organization of the resulting metal-containing polymers, their properties and the associated major applications, such as catalytical and biological activity, electrophysical characteristics, and thermal resistance.
Author | : Jörg Florian Friedrich |
Publisher | : John Wiley & Sons |
Total Pages | : 447 |
Release | : 2017-09-13 |
Genre | : Technology & Engineering |
ISBN | : 3527679928 |
The result of decades of research by a pioneer in the field, this is the first book to deal exclusively with achieving high-performance metal-polymer composites by chemical bonding. Covering both the academic and practical aspects, the author focuses on the chemistry of interfaces between metals and polymers with a particular emphasis on the chemical bonding between the different materials. He elucidates the various approaches to obtaining a stable interface, including, but not limited to, thermodynamically driven redox reactions, bond protection to prevent hydrolysis, the introduction of barrier layers, and stabilization by spacer molecules. Throughout, chemical bonding is promoted as a simple and economically viable alternative to adhesion based on reversible weak physical interaction. Consequently, the text equips readers with the practical tools necessary for designing high-strength metal-polymer composites with such desired properties as resilience, flexibility, rigidity or degradation resistance.
Author | : Jörg Florian Friedrich |
Publisher | : John Wiley & Sons |
Total Pages | : 444 |
Release | : 2017-12-04 |
Genre | : Technology & Engineering |
ISBN | : 352733677X |
The result of decades of research by a pioneer in the field, this is the first book to deal exclusively with achieving high-performance metal-polymer composites by chemical bonding. Covering both the academic and practical aspects, the author focuses on the chemistry of interfaces between metals and polymers with a particular emphasis on the chemical bonding between the different materials. He elucidates the various approaches to obtaining a stable interface, including, but not limited to, thermodynamically driven redox reactions, bond protection to prevent hydrolysis, the introduction of barrier layers, and stabilization by spacer molecules. Throughout, chemical bonding is promoted as a simple and economically viable alternative to adhesion based on reversible weak physical interaction. Consequently, the text equips readers with the practical tools necessary for designing high-strength metal-polymer composites with such desired properties as resilience, flexibility, rigidity or degradation resistance.
Author | : Daniel Klempner |
Publisher | : Springer |
Total Pages | : 491 |
Release | : 2012-02-17 |
Genre | : Technology & Engineering |
ISBN | : 9781468408768 |
Alloy is a term commonly associated with metals and implies a composite which may be sinqle phase (solid solution) or heterophase. Whichever the case, metallic alloys generally exist because they exhibit improved properties over the base metal. There are numer ous types of metallic alloys, including interstitial solid solutions, substitutional solid solutions, and multiphase combinations of these with intermetallic compounds, valency compounds, electron compounds, etc. A similar situation exists with polymers. There are numerous types of composites, or "alloys" of polymers in existence today with new ones being created continuously. Polyblends are simple physical mixtures of the constituent polymers with no covalent bonds occuring between them. As with metals, these may be homogeneous (single phase) solid solytions or heterogeneous (multiple phase) mixtures. With polymers, the latter case is by far the most prevalent situation due to the thermodynamic incompatibility of most polymers. This is due to the relatively small gain in entropy upon mixing the polymers due to contiguity restrictions imposed by their large chain length.
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 80 |
Release | : 2005-10-22 |
Genre | : Technology & Engineering |
ISBN | : 0309097150 |
Advanced polymer matrix composites (PMC) have many advantages such as light weight and high specific strength that make them useful for many aerospace applications. Enormous uncertainty exists, however, in predicting long-term changes in properties of PMCs under extreme environmental conditions, which has limited their use. To help address this issue, the Department of Defense requested a study from the NRC to identify the barriers and limitations to the use of PMCs in extreme environments. The study was to focus on issues surrounding methodologies for predicting long-term performance. This report provides a review of the challenges facing application of PMCs in extreme environments, the current understanding of PMC properties and behavior, an analysis of the importance of data in developing effective models, and recommendations for improving long-term predictive methodologies.