Synthesis and Structure of High Molecular Weight Polyphosphazenes PDF Download
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Author: George Frank Konopski
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Book Description
Author: George Frank Konopski
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Book Description
Author: Roger De Jaeger
Publisher: Nova Publishers
ISBN: 9781594540240
Category : Science
Languages : en
Pages : 390
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Book Description
Gleria (materials science, Padova University, Italy) and De Jaeger (chemistry, University of Sciences and Technologies, France) present the latest work in the synthesis and characterization of poly(organophosphazenes). The book opens with a general introduction on background, developments, and future perspectives, then covers the synthetic aspects of phosphazene polymers, with chapters on areas such as ambient temperature cationic condensation synthesis of polyphosphazenes and high molecular weight polyspirophosphazenes. Chapters on the characterization of phosphazene polymers in solution explore topics including thermal and mechanical properties of polyphosphazenes and electrochemical behavior of phosphazenes. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Author: Roger De Jaeger
Publisher: Nova Publishers
ISBN: 9781594540257
Category : Science
Languages : en
Pages : 322
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Book Description
Gleria (National Research Council, Italy) and De Jaeger (chemistry, University of Sciences and Technologies, France) present material dedicated to the use of poly(organophosphazenes) in biology, photochemistry, and high energy radiation chemistry. Their use as hybrid materials, flame and fire retardants, blend components, ionic conductors, membranes, and catalysts is also examined. Research on cyclomatrix polyphosphazene for membrane applications, sulfonated polyphosphazene membranes for direct methanol fuel cells, and synthesis and applications of phosphazene compounds is described. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Author: Robert E. Singler
Publisher:
ISBN:
Category :
Languages : en
Pages : 19
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Book Description
A number of phosphazene polymers have been synthesized which differ considerably in their physical properties. The first samples prepared were oils. Samples prepared in the latter part of the program were high molecular weight elastomers. Structure, stability, and physical properties of the polymers are discussed. These polymers have many desirable properties such as low cost, chemical inertness, low temperature flexibility, and good thermal properties. (Author, modified-PL).
Author: Mario Gleria
Publisher: Nova Publishers
ISBN: 9781590334232
Category : Science
Languages : en
Pages : 1066
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Book Description
The main aim of this book is to provide a complete picture of current research on phosphazene compounds carried out around the world. The book opens with a general introduction, then moves on to cover synthetic aspects of phosphazene polymers, their characterization in solution and from the theoretical, thermal, and mechanical points of view; application aspects of poly(organophosphazenes); and the synthesis, characterization, and practical utilization of cyclophosphazenes. There is particular focus on the use of cyclophosphazenes as hydraulic fluids and additives, as cores for star polymers or dendrimers, and as starting substrates for supramolecular chemistry and nanostructured materials. The spectroscopic characterization of these compounds by NMR and Raman techniques is also discussed. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Author: Harry R. Allcock
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
The objective of this work was the synthesis and evaluation of new polymers derived from the inorganic elements. Specifically, the goal was to develop new methods of synthesis for polyphosphazenes and to develop an understanding of the ways in which changes in molecular structure alter the properties of the polymers and allow improved polymers to be designed. First, a method has been developed for the synthesis of new polyphosphazenes with cyano side groups, and these have been used as precursors for the construction of organic side groups derived from the phosphazene-nitrile structure. The new polymers are expected to be useful as new films and elastomers. Second, a number of new classes of cyclo- and polyphosphazenes have been prepared that incorporate transition metals, such as iron, ruthenium, chromium, or cobalt into the organometallic side group structure. These macromolecules are hybrid polymer-metal materials, some of which combine the properties of organic polymers with those of metals. Typical of these materials are polyphosphazenes with ferrocene units as side groups. These show semiconductor properties and unusual oxidation-reduction behavior. Third, a series of small molecule linear phosphazenes have been prepared that serve as synthetic and structural models for the high polymers. (aw).
Author: Alexander K. Andrianov
Publisher:
ISBN: 9780841233614
Category : Computers
Languages : en
Pages : 272
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Book Description
A symposium titled "Polyphosphazenes in Biomedicine, Engineering & Pioneering Synthesis" was held at a recent meeting of the American Chemical Society (ACS) in August 2017 in Washington, DC. The chapters in this book provide a summary of the international contributions reported at that meeting, the purpose of which was to bring together a broad range of topics, research investigators, and representatives from industry to discuss the current status of different aspects of this field.
Author: K. A. Andrianov
Publisher: John Wiley & Sons
ISBN: 047047887X
Category : Science
Languages : en
Pages : 480
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Book Description
Brings together, analyzes, and contextualizes the latest findings and practical applications Polyphosphazenes, an emerging class of polymers, include macromolecules, which have been proven to be biocompatible, biodegradable, and bioactive. Their unprecedented structural diversity and unique properties make them suitable as vaccine adjuvants, microencapsulating agents, biodegradable materials, scaffolds for tissue engineering, biocompatible coatings, and carriers for gene delivery. Polyphosphazenes for Biomedical Applications offers a thorough review of polyphosphazene research findings in the life sciences, chemistry, and chemical engineering. It emphasizes biomedical applications as well as recent advances in polyphosphazene development such as high-throughput discovery and the latest controlled methods of synthesis. The book brings together, analyzes, and contextualizes a wealth of knowledge that previously could only be found scattered throughout the scientific literature. Following two introductory chapters, the book reviews: Vaccine delivery and immunomodulation Biomaterials Drug delivery systems Biodetection Well-defined polyphosphazenes: synthetic aspects and novel molecular architectures All the chapters have been written by leading researchers in the field. Editor Alexander Andrianov, who has led the effort to commercialize polyphosphazenes for biomedical applications, has carefully reviewed and edited all chapters to ensure readability, accuracy, and thoroughness. Polyphosphazenes for Biomedical Applications is not only intended for researchers working in polyphosphazene chemistry, but also for all researchers seeking solutions to problems arising in the areas of biomaterials, drug delivery systems, and controlled release formulations.
Author: Harry R. Allcock
Publisher: Wiley-Interscience
ISBN: 9780471443711
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Polyphosphazenes are polymers containing nitrogen as part of their backbone; they are commonly used in O-rings, pipelines, and seals in oil, fuel delivery, and storage systems. New polyphosphazene derivatives have been proven biocompatible, biodegradable, and bioactive, and some of them are being investigated for possible medical applications. Harry Allcock’s Chemistry and Applications of Polyphosphazenes provides the only published compilation of material on polyphosphazenes, detailing synthetic methodologies and physical properties for each substance. Allcock explains the critical relationships between structure and properties, aiding the practicing researcher in the design of polyphosphazenes with specific applications. Professionals and students in polymer science, engineering, and industries such as rubbers and plastics will find Chemistry and Applications of Polyphosphazenes to be an invaluable text.
Author: Arpit Sand
Publisher: BoD – Books on Demand
ISBN: 1789845734
Category : Science
Languages : en
Pages : 148
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Book Description
This book, Organic Polymers, covers aspects that are of immediate concern to a new entrant to the field of polymers. Taken as a whole, these eight chapters aim to help the readers easily assimilate other specialized and exhaustive treatises on the subject. Topics dealing with the chemistry and technology of polymers are presented in a careful and logical manner so as to provide an easy and enjoyable read. Several examples and analogies are included so to make the main concepts easy to follow and tables and figures are included so that the book can serve, to a limited extent, as a hand book dealing with polysaccharides with different parameters. This book is meant for students studying polysaccharides and those working on graft copolymers and other allied polymer industries but without a formal educational background in organic polymers.
