Download or read book Developments in Oriented Polymers 2 written by Ian M. Ward and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last four years since the publication of the first of this series have seen further striking developments in both the science and technology of oriented polymers. In particular, polymers possessing very high degrees of molecular orientation are now quite commonplace, and this is reflected by the inclusion of five chapters dealing with ultra-high modulus polyethylene fibres, oriented liquid crystalline polymers (both lyotropics and thermo tropics) and polydiacetylene single crystal fibres. At the same time there is continuing interest in the structure and properties of less highly oriented polymers and in the mechanisms of deformation in polymers. It is therefore good to have these themes represented also. I should like to thank the contributors for adhering to a rather tight time schedule, and the publishers for their cooperation, so that this book can provide up-to-date reviews of the state of the art in a rapidly moving area of polymer science. I. M. WARD v CONTENTS Preface.... . . . .. . . . . .. ... . . . . . . . . . .. . . .. . . . . . . ... ... v List of Contributors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IX 1. Polymer Single Crystal Fibres ........................ .
Download or read book Developments in Oriented Polymers written by I. M. Ward and published by . This book was released on 1987 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in oriented polymers 2 written by Ian M. Ward and published by . This book was released on 1987 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Oriented Polymers 1 Volume 1 written by IM Ward (ed) and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Oriented Polymers majalah written by and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development in oriented polymers written by Jan M. Ward and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Oriented Polymers written by Ian Macmillan Ward and published by Elsevier Science & Technology. This book was released on 1982 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Properties of Oriented Polymers written by Ian M. Ward and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition was produced at a time when the advantages of studying oriented polymers were just becoming apparent. From a sci entific stand point it had been demonstrated that greater insight into both structure and properties could be obtained if an oriented polymer was prepared. From a technological viewpoint, major advances were under way, especially in high modulus and high strength fibres. Twenty years later, it is possible to review the scientific advances which have been made in this area and to provide much wider perspectives for the technology. As in the case of the first edition, the emphasis is on the methodologies available for characterizing oriented polymers and their mechanical behaviour. It is a particular pleasure to thank the contributing authors for their cooperation and Dr Philip Hastings of Chapman & Hall for his support and encouragement. I am also indebted to Professors A. H. Windle and D. C. Bassett for their respective contributions to sections 1. 3. 1 and 1. 3. 4. Although this chapter has been extensively revised, the contribution of the late Leslie Holliday to the first edition of this book is also acknowledged. Introduction 1 I. M. Ward 1. 1 THE PHENOMENON OF ORIENTATION Orientation in polymers is a phenomenon of great technical and theo retical importance. The word orientation itself conveys a number of ideas.
Download or read book Developments in Crystalline Polymers 2 written by David C. Bassett and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern society makes increasing demands for novelty in materials and their properties which are ever more exacting. Crystalline polymers are in the forefront of this demand and improvements are constantly occurring across the entire range from existing materials of high tonnage to novel materials with application in information technology. The developments recorded in this volume reflect this situation. Chapter 1 is a comprehensive review of the polymer PHB, poly(hydroxybutyrate), which is new to industrial manufacturing but is a naturally occurring substance. It has potentially valuable properties but has excited interest especially because it is biodegradable. It may, therefore, provide one means of reducing environmental pollution. Improvements in existing materials, beyond those which are ob tainable by optimization of known variables, are most likely to come from understanding of structure-property relationships. Polymer is able to make effective science has now reached the stage where it synthesis of information from complementary techniques, leading to rapidly deepening understanding. Chapters 2, 3 and 4 are all con cerned with technical developments which are contributing substan tially to this synthesis. The possibilities of electron microscopy, specifically the characterization of lamellar microstructure, have been transformed by permanganic etching. Now real organization (which can be very different from what had previously been inferred) can be used as a basis for explaining polymeric properties. In Chapter 3, Mitchell and Windle give a critical account of the assessment of orientation in liquid crystalline polymers, a rapidly developing new field in which they have played a leading part.
Download or read book Developments in oriented polymers written by Ian M. Ward and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Crystalline Polymers 1 written by David C. Bassett and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crystalline or, more properly, semi-crystalline polymers continue to present major challenges and opportunities to scientists and technologists alike. On the one hand, scientific understanding of their structure and properties still lags behind that of other economically important, but less complicated materials. On the other hand, there remains very considerable potential for improving properties in systems designed for specific pur poses. Ways are only just being found of transferring inherent molecular properties (such as high modulus) to the macromolecular solid. Beyond these are many possibilities of manipulating the organization of chemical and physical textures towards desired ends. The chapters in this volume are reports, by wen-known and active researchers, on some of the important recent developments ofthese themes. Grubb begins with the fundamental and central problem of determining polymeric microstructure. Polymers sutTer by comparison with other materials in that it has not generany been possible to exploit the high resolution of the electron microscope to determine their microstructure in adequate detail. However, recently, ways have been found of studying representative lamellar textures in melt-crystallized polymers. When fully exploited these must add greatly to our detailed knowledge and provide a firmer fundamental base for future developments. Radiation damage bears the primary responsibility for restricting electron microscopy. In his chapter, Kener recounts how appreciation of this fact led him into a fascinating study of ever deeper aspects of radiation damage in polyethylene over two decades, often controversiany but invariably clarifying the basic understanding of an area now of increasing commercial importance.
Download or read book Oriented Polymer Materials written by Stoyko Fakirov and published by Wepf. This book was released on 1996 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updates materials and polymer scientists on developments during the ten years since the previous book devoted to the subject. Provides information on the orientation of macromolecules that largely determines the mechanical properties of polymer materials, as well as on several of specific materials. Of particular interest are the largely review articles by two Russian contributors offering access to research that has not been available in the west for many decades. Among the topics are problems of the physics of the oriented state of polymers, x-ray diffraction by quasi-periodic polymer structures, morphology in oriented semi-crystalline polymers, polarized light scattering from polymer textures, and the nature of the crystalline and amorphous phases in oriented polymers and their influence on physical properties. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Advances in Sustainable Polymers written by Vimal Katiyar and published by Springer Nature. This book was released on 2020-03-03 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses synthesis and characterization of sustainable polymers. The book covers opportunities and challenges of using sustainable polymers to replace existing petroleum based feedstock. This volume provides insights into the chemistry of polymerization, and discusses tailoring the properties of the polymers at the source in order fit requirements of specific applications. The book also covers processing of these polymers and their critical assessment. The book will be of use to chemists and engineers in the industry and academia working on sustainable polymers and their commercialization to replace dependence on petroleum-based polymers.
Download or read book The Physics of Polymers written by Gert R. Strobl and published by Springer Science & Business Media. This book was released on 2007-08-02 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physics of Polymers presents the elements of this important segment of material science, focusing on concepts above experimental techniques and theoretical methods. Written for graduate students of physics, material science and chemical engineering and for researchers working with polymers in academia and industry, the book introduces and discusses the basic phenomena which lead to the peculiar physical properties of polymeric systems. The revised and expanded Third Edition includes a new chapter dealing with conjugated polymers, explaining the physical basis of the characteristic electro-optic response, and the spectacular electrical conduction properties of conjugated polymers created by doping.
Download or read book Developments in Polymer Characterisation 4 written by J.V. Dawkins and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes reviews on tackling polymer characterisation problems and on developing specific characterisation techniques. The first two chapters and the last chapter describe progress in providing character isation information for polymers containing long-chain branching, for polymer blends, and for polymers having preferred orientation. The remaining chapters review progress in individual techniques, showing with examples the characterisation results which may be obtained. It is recognised that the degree of chain branching which can evolve in some polymerisation processes can have a marked effect on the flow properties of a polymer, and therefore on polymer processing behaviour. In the first chapter the characterisation of long-chain branching from measurements of the molecular size and molar mass of a polymer in dilute solution is outlined. It is indicated that a complete characterisation of branching requires the combined use of several techniques, emphasising in particular recent developments involving gel permeation chromatography. Thermal analysis and infrared spectroscopy are widely used techniques in polymer characterisation. Both techniques can provide, very quickly, significant results with readily available instrumentation. This is illustrated by the review of the characterisation of polymer blends by thermal analysis in Chapter 2. An assessment of blend morphology, which influences the behaviour of a material consisting of two or more polymers, is presented in terms of transition temperatures. Conventional infrared spectroscopy involves dispersive spectrometers which do not always provide accurate information on composition and structure for complex polymeric materials.
Download or read book Development of Highly Oriented Polymers with Improved Mechanical Properties written by Eberhard A. Meinecke and published by . This book was released on 1974 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic need for stronger polymeric films is discussed in the context of new theoretical and experimental evidence. It is shown that extended-chain crystals of polymers, that is, polymer chains which do not fold back on themselves should have high strength and stiffness. However, it is necessary to use these materials in the form of films that have all of the chains oriented in one direction. It is shown that such laminates should and do have enhanced mechanical properties. Experiments to produce such oriented films with polyethylene crystallized in a shear field are reported. A stirred, high- pressure crystallizer was designed and assembled, although no data have yet been obtained. Screening tests to evaluate a variety of materials were conducted with several polymers. Poly(n-alkyl isocyanates) were cast as ultra-thin films and show promise as a high regular extended-chain crystal. Preliminary x-ray diffraction studies of these materials were performed.
Download or read book Polymer Composites Macro and Microcomposites written by Sabu Thomas and published by John Wiley & Sons. This book was released on 2012-04-30 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first systematic reference on the topic with an emphasis on the characteristics and dimension of the reinforcement. This first of three volumes, authored by leading researchers in the field from academia, government, industry, as well as private research institutions around the globe, focuses on macro and micro composites. Clearly divided into three sections, the first offers an introduction to polymer composites, discussing the state of the art, new challenges, and opportunities of various polymer composite systems, as well as preparation and manufacturing techniques. The second part looks at macro systems, with an emphasis on fiber reinforced polymer composites, textile composites, and polymer hybrid composites. Likewise, the final section deals with micro systems, including micro particle reinforced polymer composites, the synthesis, surface modification and characterization of micro particulate fillers and flakes as well as filled polymer micro composites, plus applications and the recovery, recycling and life cycle analysis of synthetic polymeric composites.
