Download or read book Synthesis and Materials Science Applications of Highly Metallized Polymers written by Kun Liu and published by . This book was released on 2008 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramic thin films containing soft magnetic CoFe alloy nanoparticles were prepared from a highly metallized PFS with pendent cobalt cluster substituent (Co-PFS) as precursor. Nanogranular in-gap spintronic devices were fabricated using the ceramic thin films by pyrolysis of Co-PFS precursors. The conductivity characteristics and magnetoresistance of the devices are of considerable interest and are under detailed investigation; some preliminary results are presented.Large area highly ordered arrays of magnetic ceramic nanorods were fabricated with precisely controllable dimensions and aspect ratios by nanoimprinting a high-ceramic-yield PFS precursor using anodic aluminum oxide templates.Arrays of ferromagnetic FePt nanoparticle micropatterns were fabricated from thin films of a novel air- and moisture-stable bimetallic polyferroplatinyyne precursor, which can be utilized directly as a negative resist in both electron-beam lithography and UV-photolithography.Polycarbosilanes with pendant cobalt carbonyl clusters (Co-PCS) and nickel clusters (Ni-PCS) were synthesized with control of molecular weight. Co-PCS could be patterned by electron-beam lithography and Ni-PCS was a precursor to Ni-containing NPs.
Download or read book Synthesis and Materials Science Applications of Highly Metallized Polyferrocenylsilanes and the Photocontrolled Polymerization and Oligomerization of Silicon bridged 1 ferrocenophanes written by Wing Yan Chan and published by . This book was released on 2007 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acetylide-substituted sila[1]ferrocenophane [Fe(eta-C5H 4)2Si(Me)C≡CPh] was reacted with dinuclear metal complexes to give highly metallized sila[1]ferrocenophanes [Fe(eta-C5H 4)2Si(Me){M2(R)C2Ph}] containing pendent cobalt [M2(R) = Co2(CO)6], molybdenum [M 2(R) = Mo2Cp2(CO)4], or nickel [M 2(R) = Ni2Cp2] clusters. The corresponding highly metallized polyferrocenylsilanes (PFSs) were prepared from acetylide-substituted PFS [Fe(eta-C5H4)2Si(Me)C≡CPh] n using a similar clusterization strategy; these polymers contain at least 25% metal by weight and have been patterned on the micron scale using electron-beam lithography and UV-photolithography.Sila[1]ferrocenophanes [Fe(eta-C5H4)2Si(C≡CBu) 2] (A) and [Fe(eta-C5H4)2 Si(Me)C≡CC≡CPh] (B) were prepared and polymerized. The presence of multiple alkyne substituents complicated the reactivity of these sila[1]ferrocenophanes in platinum-catalyzed ring-opening polymerization (ROP), leading to low yields and bimodal molecular weight distributions. However, both A and B polymerized to give monomodal, well-defined PFSs in photocontrolled ROP.The photocontrolled ROP of sila[1]ferrocenophane [Fe(eta-C5H 4)2SiMe2] (C) using Na[CsH5 ] as initiator was studied in detail. Although ferrocenophane C has two major absorption bands between 300 nm and 600 nm, only the band centred at 480 nm is responsible for generating photoexcited monomers that undergo polymerization. A faster propagation rate was observed at 5°C than at 20°C, presumably due to the more rapid deactivation of photoexcited monomers at higher temperatures. Since the photoexcited monomers are likely solvated, coordinating solvents such as tetrahydrofuran and pyridine are best for this reaction. The living nature of photocontrolled ROP was demonstrated by ABA triblock copolymer synthesis using difunctional initiators.Photopolymerization of ferrocenophane C using 4,4',4"-tri- tert-butyl-2,2':6',2"-terpyridine (tBu3terpy) as a stoichiometric initiator gave the high molecular weight PFS [Fe(eta-C 5H4)2SiMe2]n. When the photolysis was performed in the presence of Me3SiCl, cleavage of both iron--cyclopentadienyl bonds in ferrocenophane C was observed. The iron(II) complex [Fe(tBu3terpy)2Cl2] was formed and the silane fragment [(C5H4SiMe3) 2SiMe2] was released.Photoirradiation of ferrocenophane C and a stoichiometric amount of 4,4'-dimethyl-2,2'-bipyridine gave cyclic PFS and cyclic oligoferrocenylsilanes. Simulated powder X-ray diffractograms of cyclic pentaferrocenylsilane c-[Fe(eta-C 5H4)2SiMe2]5 and cyclic hexaferrocenylsilane c-[Fe(eta-C5H4)2SiMe 2]6 showed that their solid state structures have similar interplanar iron--iron distances as linear PFS [Fe(eta-C5H 4)2SiMe2]n. Cyclic voltammetry studies of the oligomers reveal that oxidation initially occurred at alternating iron centres, and the remaining iron centres were oxidized at a higher potential.
Download or read book Materials Science and Engineering for the 1990s written by National Research Council and published by National Academies Press. This book was released on 1989-02-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials science and engineering (MSE) contributes to our everyday lives by making possible technologies ranging from the automobiles we drive to the lasers our physicians use. Materials Science and Engineering for the 1990s charts the impact of MSE on the private and public sectors and identifies the research that must be conducted to help America remain competitive in the world arena. The authors discuss what current and future resources would be needed to conduct this research, as well as the role that industry, the federal government, and universities should play in this endeavor.
Download or read book Renewable Polymers and Polymer Metal Oxide Composites written by Sajjad Haider and published by Elsevier. This book was released on 2022-03-17 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewable Polymers and Polymer-Metal Oxide Composites: Synthesis, Properties, and Applications serves as a reference on the key concepts of the advances of polymer-oxide composites. The book reviews knowledge on polymer-composite theory, properties, structure, synthesis, and their characterization and applications. There is an emphasis on coupling metal oxides with polymers from renewable sources. Also, the latest advances in the relationship between the microstructure of the composites and the resulting improvement of the material's properties and performance are covered. The applications addressed include desalination, tissue engineering, energy storage, hybrid energy systems, food, and agriculture. This book is suitable for early-career researchers in academia and R&D in industry who are working in the disciplines of materials science, engineering, chemistry and physics. - Provides basic principles, theory and synthetic methods of composite materials, polymer composites and metal oxides - Reviews the latest advances in polymer-oxide-based applications in medicine, water treatment, energy and sensing - Discusses materials from renewable resources, including lifecycle assessment, economic aspects and potential application in tissue engineering, photovoltaics and food packaging
Download or read book Polyimides and Other High Temperature Polymers Synthesis Characterization and Applications Volume 5 written by Kash L. Mittal and published by CRC Press. This book was released on 2009-04-24 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume documents the proceedings of the "Second International Symposium on Polyimides and Other High Temperature Polymers: Synthesis, Characterization and Applications, held in Newark, New Jersey, December 3-6, 2001. Polyimides possess many desirable attributes, so this class of materials has found applications in many technologies ranging fro
Download or read book Specialty Polymers written by Ram K. Gupta and published by CRC Press. This book was released on 2023-01-31 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive volume provides current, state-of-the-art information on specialty polymers that can be used for many advanced applications. The book covers the fundamentals of specialty polymers, synthetic approaches, and chemistries to modify their properties to meet the requirements for special applications, along with current challenges and prospects. Chapters are written by global experts, making this a suitable textbook for students and a one-stop resource for researchers and industry professionals. Key Features: - Presents synthesis, characterization, and applications of specialty polymers for advanced applications. - Provides fundamentals and requirements for polymers to be used in many advanced and emerging areas. - Details novel methods and advanced technologies used in polymer industries. - Covers the state-of-the-art progress on specialty polymers for a range of advanced applications.
Download or read book Metallized and Magnetic Polymers written by Johannes Karl Fink and published by John Wiley & Sons. This book was released on 2016-03-08 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the chemistry of metallized and magnetic polymers, as well as the special applications of these materials. After an introductory section on the general aspects of the field, the types and uses of these polymers are detailed, followed by an overview of the testing methods. The book is divided equally into two parts – metallized polymers and magnetic polymers – and both parts follow the same structure: All methods of fabrication Properties and methods of measurement including standard test methods and interface properties Fields of applications Environmental issues including recycling and biodegradable polymers
Download or read book Metallo Supramolecular Polymers written by Masayoshi Higuchi and published by Springer Nature. This book was released on 2019-11-12 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the synthesis, electrochemical and photochemical properties, and device applications of metallo-supramolecular polymers, new kinds of polymers synthesized by the complexation of metal ions and organic ditopic ligands. Their electrochemical and photochemical properties are also interesting and much different from conventional organic polymers. The properties come from the electronic intra-chain interaction between the metal ions and the ligands in the polymer chain. In this book, for example, the electrochromism that the Fe(II)-based metallo-supramolecular polymer exhibits is described: the blue color of the polymer film disappears by the electrochemical oxidation of Fe(II) ions to Fe(III) and the colorless film becomes blue again by the electrochemical reduction of Fe(III) to Fe(II). The electrochromism is explained by the disappearance/appearance of the metal-to-ligand charge transfer absorption. The electrochromic properties are applicable to display devices such as electronic paper and smart windows.
Download or read book Polyimides and other high temperature polymers written by K. L. Mittal and published by VSP. This book was released on 2003-03 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Containing 32 peer-reviewed papers, this volume documents the proceedings of the international symposium of the same name (held under the aegis of the Materials Science and Technology Conferences) in December of 2001. Devoted to research into high-temperature polymers, the papers are organized into sections dealing with synthesis, properties, and bulk characterization in the first half and surface modification, interfacial or adhesion aspects, and applications in the second. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com).
Download or read book Polymer Science and Nanotechnology written by Ravin Narain and published by Elsevier. This book was released on 2020-06-16 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Science and Nanotechnology: Fundamentals and Applications brings together the latest advances in polymer science and nanoscience. Sections explain the fundamentals of polymer science, including key aspects and methods in terms of molecular structure, synthesis, characterization, microstructure, phase structure and processing and properties before discussing the materials of particular interest and utility for novel applications, such as hydrogels, natural polymers, smart polymers and polymeric biomaterials. The second part of the book examines essential techniques in nanotechnology, with an emphasis on the utilization of advanced polymeric materials in the context of nanoscience. Throughout the book, chapters are prepared so that materials and products can be geared towards specific applications. Two chapters cover, in detail, major application areas, including fuel and solar cells, tissue engineering, drug and gene delivery, membranes, water treatment and oil recovery. - Presents the latest applications of polymers and polymeric nanomaterials, across energy, biomedical, pharmaceutical, and environmental fields - Contains detailed coverage of polymer nanocomposites, polymer nanoparticles, and hybrid polymer-metallic nanoparticles - Supports an interdisciplinary approach, enabling readers from different disciplines to understand polymer science and nanotechnology and the interface between them
Download or read book Self Healing Polymers written by Wolfgang H. Binder and published by John Wiley & Sons. This book was released on 2013-03-29 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-healing is a well-known phenomenon in nature: a broken bone merges after some time and if skin is damaged, the wound will stop bleeding and heals again. This concept can be mimicked in order to create polymeric materials with the ability to regenerate after they have suffered degradation or wear. Already realized applications are used in aerospace engineering, and current research in this fascinating field shows how different self-healing mechanisms proven successful by nature can be adapted to produce even more versatile materials. The book combines the knowledge of an international panel of experts in the field and provides the reader with chemical and physical concepts for self-healing polymers, including aspects of biomimetic processes of healing in nature. It shows how to design self-healing polymers and explains the dynamics in these systems. Different self-healing concepts such as encapsulated systems and supramolecular systems are detailed. Chapters on analysis and friction detection in self-healing polymers and on applications round off the book.
Download or read book Nitroxide Mediated Polymerization written by Didier Gigmes and published by Royal Society of Chemistry. This book was released on 2015-12-08 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroxide-mediated polymerization is an important branch of controlled radical polymerization, which has revolutionised the preparation of polymer architectures and compositions. This is the first book dedicated to the topic and covers the history and development of nitroxide-mediated polymerization, as well as current techniques of academic and industrial interest. Nitroxide-Mediated Polymerization gathers together and comprehensively discusses all aspects of nitroxide-mediated polymerization, from fundamental principles through to industrial applications. A specific focus will be dedicated to the principle of the technique, its kinetics aspects, the synthesis of the controlling agents, the range of polymerizable monomers, its potential for preparation of advanced organic and hybrid materials and its status at the industrial stage. The book details all stages of the field, with chapters detailing the history, recent developments and novel materials in this fast developing area. Edited and written by expert researchers working in the field and academia this book focuses on highlighting the kinetic aspects of nitroxide-mediated polymerization, providing insight into the kinetics that can sometimes be hard to follow in published papers. The book will be of interest to polymer chemists and materials scientists at graduate level and above.
Download or read book Polyimides and Other High Temperature Polymers Synthesis Characterization and Applications written by Kash L. Mittal and published by CRC Press. This book was released on 2007-07-10 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is mostly based on papers presented at the Fourth International Symposium on this topic held in Savannah, Georgia. However, in addition to these papers, certain very relevant papers have also been included to broaden the scope and thus enhance the value of this book. Currently there is tremendous interest in these material because of their unique properties and applications in diverse technological areas ranging from microelectronics to aerospace to adhesive bonding. This book is divided into three parts: Part 1: Synthesis and Bulk Characterization; Part 2: Surface and Interface Aspects (Composites and Metallization); and Part 3: Applications. The topics covered include: synthesis of a number of polyimides with tailored properties; nanocomposites for high-performance applications; molecular assembly of polyimides; polyimide L-B films; metallization of polyimides; applications of high temperature polymers as proton exchange membranes; dielectrics, and in textile.
Download or read book Metallized and Magnetic Polymers written by Johannes Karl Fink and published by John Wiley & Sons. This book was released on 2016-02-29 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the chemistry of metallized and magnetic polymers, as well as the special applications of these materials. After an introductory section on the general aspects of the field, the types and uses of these polymers are detailed, followed by an overview of the testing methods. The book is divided equally into two parts – metallized polymers and magnetic polymers – and both parts follow the same structure: All methods of fabrication Properties and methods of measurement including standard test methods and interface properties Fields of applications Environmental issues including recycling and biodegradable polymers
Download or read book Synthetic Metal Containing Polymers written by Ian Manners and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of the field of synthetic metal-containing polymers - where metal atoms form an integral part of the main chain or side group structure of a polymer - aims to create new materials which combine the processability of organic polymers with the physical or chemical characteristics associated with the metallic element or complex. This book covers the major developments in the synthesis, properties, and applications of synthetic metal-containing macromolecules, and includes chapters on the preparation and characterization of metal-containing polymers, metallocene-based polymers, rigid-rod organometallic polymers, coordination polymers, polymers containing main group metals, and also covers dendritic and supramolecular systems. The book describes both polymeric materials with metals in the main chain or side group structure and covers the literature up to the end of 2002.
Download or read book Metallization of Polymers 2 written by Edward Sacher and published by Springer Science & Business Media. This book was released on 2002-09-30 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the demands put on the polymer/metal interface, particularly by the microelectronics industry, become more and more severe, the necessity for understanding this interface, its properties and its limitations, becomes more and more essential. This requires a broad knowledge of, and a familiarity with, the latest findings in this rapidly advancing field. At the very least, such familiarity requires an exchange of infonnation, particularly among those intimately involved in this field. Communications among many of us in this area have made one fact quite obvious: the facilities provided by existing organizations, scientific and otherwise, do not offer the forum necessary to accomplish this exchange of infonnation. It was for this reason that Jean-Jacques Pireaux, Steven Kowalczyk and I organized the first Metallization of Polymers, a symposium sponsored by the American Chemical Society, which took place in Montreal, September 25-28, 1989; the Proceedings from that symposium were published as ACS Symposium Series 440, (1990). It is this same per ceived lack of a proper forum, and the encouragement of my colleagues, that prompted me to organize this meeting, so as to bring to the attention of the participants new instruments, materials, methods, advances, and, particularly, thoughts in the field of polymer metalliza tion. The meeting was designed as a workshop, with time being made available throughout for discussion and for the consideration of new findings.
Download or read book New Smart Materials via Metal Mediated Macromolecular Engineering written by Ezat Khosravi and published by Springer. This book was released on 2009-09-30 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control over macromolecular architecture and resulting material properties has been a central goal of polymer chemistry. There has been much interest in developing new synthetic routes to prepare smart materials with novel compositions and topologies for various applications. The considerable progress in the metal mediated macromolecular engineering over the past decade has had a major impact on the development of well-defined macromolecular architectures and the synthesis of smart materials. Particularly, remarkable strong developments have been observed for the synthesis of smart materials via four metal mediated macromolecular engineering techniques; Anionic, ROMP, ATRP and Click Chemistry. These materials have found uses in advanced microelectronics, technical and biomedical applications as well as in chemical sensors applications. This book is comprised of 27 chapters written by leading scientists from NATO and Partner Countries who have greatly contributed in the area of Anionic, ROMP, ATRP and Click Chemistry. It highlights the fundamental aspects and recent developments of these four powerful techniques and evaluate their potential in the syntheses of smart materials from complex structures (grafts, brushes, dendrimers, etc.) to nanostructures (self-assembly, nano-size, etc) for a wide range of applications. The book reports on the synthesis of a wide range of well-defined complex polymeric systems such as thermoresponsive smart polymers, star copolymers, biocompatible polymers, amphipilic smart nano structured, conducting polymers, self assembled polymers, and hyperbranced polymers.
