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The Use Of Synchrotron X Ray Diffraction To Characterize Natural And Synthetic Liquid Crystalline Polymers
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Book Synopsis The Use of Synchrotron X-ray Diffraction to Characterize Natural and Synthetic Liquid Crystalline Polymers by : Scott Guthrie McNamee
Download or read book The Use of Synchrotron X-ray Diffraction to Characterize Natural and Synthetic Liquid Crystalline Polymers written by Scott Guthrie McNamee and published by . This book was released on 1994 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applications of Synchrotron Light to Scattering and Diffraction in Materials and Life Sciences by : T.A. Ezquerra
Download or read book Applications of Synchrotron Light to Scattering and Diffraction in Materials and Life Sciences written by T.A. Ezquerra and published by Springer. This book was released on 2009-06-12 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a ?rst approximation, certainly rough, one can de?ne as non-crystalline materials those which are neither single-crystals nor poly-crystals. Within this category, we canincludedisorderedsolids,softcondensed matter,andlivesystemsamong others. Contrary to crystals, non-crystalline materials have in common that their intrinsic structures cannot be exclusively described by a discrete and periodical function but by a continuous function with short range of order. Structurally these systems have in common the relevance of length scales between those de?ned by the atomic and the macroscopic scale. In a simple ?uid, for example, mobile molecules may freely exchange their positions, so that their new positions are permutations of their old ones. By contrast, in a complex ?uid large groups of molecules may be interc- nected so that the permutation freedom within the group is lost, while the p- mutation between the groups is possible. In this case, the dominant characteristic length, which may de?ne the properties of the system, is not the molecular size but that of the groups. A central aspect of some non-crystalline materials is that they may self-organize. This is of particular importance for Soft-matter materials. Self-organization is characterized by the spontaneous creation of regular structures at different length scales which may exhibit a certain hierarchy that controls the properties of the system. X-ray scattering and diffraction have been for more than a hundred years an essential technique to characterize the structure of materials. Quite often scattering anddiffractionphenomenaexhibitedbynon-crystallinematerialshavebeenreferred to as non-crystalline diffraction.
Book Synopsis Characterization of Polymers in the Solid State II by : H.H. Kausch
Download or read book Characterization of Polymers in the Solid State II written by H.H. Kausch and published by Springer. This book was released on 2014-03-12 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Solid Polymers by : S.J. Spells
Download or read book Characterization of Solid Polymers written by S.J. Spells and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade or so has seen a dramatic increase in the amount of detailed structural information available from a range of experimental techniques. Exciting new techniques such as atomic force microscopy have become widely available, while the potential of established methods like X-ray diffraction and electron microscopy has been greatly enhanced by powerful new sources and analytical methods. Progress in computing has also had a widespread impact: in areas such as neutron scattering, large data sets can now be manipulated more readily. The software supplied with commercial instruments generally provides more sophisti cated analytical facilities, while time-resolved X-ray studies rely on rapid data handling capabilities. The polymer scientist is faced with an expanding array of experimental tools for addressing both fundamental science and industrial problems. This work reviews some recent developments in structural techniques, with the aim of presenting the current 'state of the art' in a selection of areas.
Book Synopsis Crystals and Crystallinity in Polymers by : Claudio De Rosa
Download or read book Crystals and Crystallinity in Polymers written by Claudio De Rosa and published by John Wiley & Sons. This book was released on 2013-08-26 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the tools needed to master and apply the fundamentals of polymer crystallography Using core concepts in physics, chemistry, polymer science and engineering, this book sheds new light on the complex field of polymer crystallography, enabling readers to evaluate polymer crystallization data and determine the best methods to use for their investigations. The authors set forth a variety of tested and proven methods for analyzing ordered and disordered structures in polymer crystals, including X-ray diffraction, electron diffraction, and microscopy. In addition to the basics, the book explores several advanced and emerging topics in the field such as symmetry breaking, frustration, and the principle of density-driven phase formation. Crystals and Crystallinity in Polymers introduces two new concepts in crystallinity and crystals in synthetic polymers. First, crystallinity in polymeric materials is compatible with the absence of true three-dimensional long-range order. Second, the disorder may be described as a structural feature, using the methods of X-ray scattering and electron diffraction analysis. The book begins by introducing the basic principles and methods for building structural models for the conformation of polymer crystal chains. Next, it covers: Packing of macromolecules in polymer crystals Methods for extracting structural parameters from diffraction data Defects and disorder in polymer crystals Analytical methods for diffuse scattering from disordered polymer structures Crystal habit Influence of crystal defects and structural disorder on the physical and mechanical properties of polymeric materials Crystals and Crystallinity in Polymers examines all the possible types of structural disorder generally present in polymer crystals and describes the influence of each kind of disorder on X-ray and electron diffraction patterns. Its comprehensive, expert coverage makes it possible for readers to learn and apply the fundamentals of polymer crystallography to solve a broad range of problems.
Download or read book Engineered Materials Abstracts written by and published by . This book was released on 1995 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of Liquid Crystal Polymers Using X-ray Diffraction by : N. J. Herring
Download or read book An Investigation of Liquid Crystal Polymers Using X-ray Diffraction written by N. J. Herring and published by . This book was released on 1984 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization, and Rheology of Functional and Heterocyclic Liquid Crystalline Polymers by : Wenyi Huang
Download or read book Synthesis, Characterization, and Rheology of Functional and Heterocyclic Liquid Crystalline Polymers written by Wenyi Huang and published by . This book was released on 2006 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three segmented main-chain thermotropic liquid crystalline polymers (TLCPs) functionalized with nitrogen-containing heterocyclic groups were synthesized; namely PyHQ12 having pendent pyridyl group, PABP having side-chain azopyridyl group with flexible spacer, and PTBP containing side-chain terpyridine group with flexible spacer. The principles of specific interactions were applied to prepare supramolecular structures and organoclay or clay nanocomposites based on these functional TLCPs. Three combined main-chain/side-chain liquid-crystalline polymers (MCSCLCPs) were prepared via hydrogen bonding or ionic interactions based on PyHQ12 and PABP. The presence of hydrogen bonds in self-assembled PyHQ12-7CNCOOH and PABP-AA, and the presence of ionic interactions in self-assembled PABP-TSA, which exist above their respective clearing temperatures, were confirmed using Fourier transform infrared (FTIR) spectroscopy, the thermal transitions in each MCSCLCP were determined using differential scanning calorimetry (DSC), and the mesophase structures of each self-assembled MCSCLCP were characterized using polarized optical microscopy (POM) and wide-angle X-ray diffraction (WAXD). PyHQ12 was observed to be very effective in exfoliating organoclay (Cloisite 30B) aggregates, because of the formation of hydrogen bonds, as determined by in situ FTIR spectroscopy, between the pendent pyridyl group in PyHQ12 and the hydroxyl groups in the surfactant MT2EtOH residing at the surface of Cloisite 30B. Thus, functionality in TLCP is necessary to obtain highly dispersed organoclay nanocomposites, but at the same time there is a possibility to lose some degree of liquid crystallinity in the TLCP, due to the proximity of the pendent pyridyl group to the mesogenic main-chain backbone. Thus, another functional TLCP, PABP having side-chain azopyridyl group with flexible spacer, was synthesized. It has been found that the liquid crystallinity of PABP in the organoclay nanocomposites was more or less intact and yet organoclay (Cloisite 30B) aggregates were very well dispersed, which was attributed to the fact that the pyridyl group in the side-chain azopyridine of PABP is located sufficiently far away from the mesogenic main chain. The rheological properties of functional TLCP/organoclay nanocomposites were also investigated. A unique polymer/ruthenium complex [RuII(PTBP)(6TPy)](PF6)2 based on PTBP was used to prepare natural clay (Montmorillonite, MMT) nanocomposite. X-ray diffraction and transmission electron microscopy indicate that MMT has a high degree of exfoliation in the matrix of PTBP/ruthenium complex. UV-vis spectroscopy and FTIR spectroscopy show that the driving force for exfoliating MMT in PTBP/ruthenium complex is attributable to the Coulombic interactions between the positively charged ruthenium center in the side chain of the polymer and the negatively charged clay surfaces.
Book Synopsis X-ray Scattering of Synthetic Polymers by : F. J. Baltá-Calleja
Download or read book X-ray Scattering of Synthetic Polymers written by F. J. Baltá-Calleja and published by Elsevier Publishing Company. This book was released on 1989 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-Ray scattering is one of the most powerful tools in the study of the structure of the wide class of polymeric materials in which partial crystallization occurs. The scattering at wide angles provides information on the unit cell variations, the crystallinity, the crystalline perfection and the orientation of the crystallites, whereas the scattering at small angles is specially suited to a description of the crystalline-amorphous morphology. As a result of scientific advances and industrial interest in polymers, progress in constantly being made in the application of X-ray scattering to these materials. This book describes the current state-of-the-art of the application of X-ray scattering to the study of solid polymer materials. As well as chapters on theory and instrumentation, the book covers subjects concerning the measurement of lattice constants, the crystalline perfection, the degree of crystallinity and the description of preferred orientation. In addition, special emphasis is given to the study of the crystalline morphology with the aid of small-angle X-ray scattering, giving both theoretical background and practical information.
Book Synopsis Synchrotron Radiation in Materials Science by : Chunhai Fan
Download or read book Synchrotron Radiation in Materials Science written by Chunhai Fan and published by John Wiley & Sons. This book was released on 2018-05-29 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meeting the long-felt need for in-depth information on one of the most advanced material characterization methods, a top team of editors and authors from highly prestigious facilities and institutions covers a range of synchrotron techniques that have proven useful for materials research. Following an introduction to synchrotron radiation and its sources, the second part goes on to describe the various techniques that benefit from this especially bright light, including X-ray absorption, diffraction, scattering, imaging, and lithography. The thrid and final part provides an overview of the applications of synchrotron radiation in materials science. bridging the gap between specialists in synchrotron research and material scientists, this is a unique and indispensable resource for academic and industrial researchers alike.
Book Synopsis Scattering from Polymers by : Peggy Cebe
Download or read book Scattering from Polymers written by Peggy Cebe and published by . This book was released on 2000 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reflects the recent progress made in the field of scattering in polymers. A wide range of scattering studies on different polymer systems, including block copolymers, semicrystalline polymers, complex fluids, multicomponent systems, polymeric surfaces, and polymer processing are included, as well as new experimental techniques and theoretical treatments. This volume provides a comprehensive reference for those researchers who need to know how scattering techniques can be used to tackle different polymer problems, and is ideal for graduate polymer scientists studying scattering techniques.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Liquid Crystal Polymers (LCP) Using Synchrotron X-ray Radiation by : G. Zachmann
Download or read book Study of Liquid Crystal Polymers (LCP) Using Synchrotron X-ray Radiation written by G. Zachmann and published by . This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Glassy Main Chain, Thermotropic Liquid Crystalline Polyesters Based Upon a Highly Substituted Phenylene-terephthalate Mesogenic Unit with Flexible Spacers by : Ann Marie Delvin
Download or read book Synthesis and Characterization of Glassy Main Chain, Thermotropic Liquid Crystalline Polyesters Based Upon a Highly Substituted Phenylene-terephthalate Mesogenic Unit with Flexible Spacers written by Ann Marie Delvin and published by . This book was released on 1988 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid Surfaces and Interfaces by : Peter S. Pershan
Download or read book Liquid Surfaces and Interfaces written by Peter S. Pershan and published by Cambridge University Press. This book was released on 2012-08-02 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical guide for graduate students and researchers on all aspects of x-ray scattering experiments on liquid surfaces and interfaces.
Book Synopsis Biomedical Inorganic Polymers by : Werner E. G. Müller
Download or read book Biomedical Inorganic Polymers written by Werner E. G. Müller and published by Springer Science & Business Media. This book was released on 2014-01-13 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, inorganic polymers have attracted much attention in nano-biomedicine, in particular in the area of regenerative medicine and drug delivery. This growing interest in inorganic polymers has been further accelerated by the development of new synthetic and analytical methods in the field of nanotechnology and nanochemistry. Examples for biomedical inorganic polymers that had been proven to exhibit biomedical effects and/or have been applied in preclinical or clinical trials are polysilicate / silica glass (such as naturally formed “biosilica” and synthetic “bioglass”) and inorganic polyphosphate. Some members of the mentioned biomedical inorganic polymers have already been applied e.g. as “bioglass” for bone repair and bone tissue engineering, or they are used in food processing and in dental care (inorganic polyphosphates). However, there are a number of further biological and medicinal properties of these polymers, which have been elucidated in the last few years but not yet been applied for treatment of humans. In addition to polysilicates and polyphosphate, there are a series of other inorganic polymers including polyarsenate and polyvanadate, whose biological / biomedical properties have been only marginally studied so far. Moreover, the combined application of inorganic polymers and organic polymeric molecules (formation of organic-inorganic hybrid materials) provides a variety of new materials with novel property combinations and diverse applications in nanomedicine. The planned book summarizes the present state of knowledge on a large group of inorganic polymers that had hitherto been mainly considered with regard to their chemistry but not comprehensively reviewed with respect to their potential biomedical applications.
Book Synopsis Polysaccharides by : Severian Dumitriu
Download or read book Polysaccharides written by Severian Dumitriu and published by CRC Press. This book was released on 2004-11-30 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and expanded to reflect the latest advancements in the field, Polysaccharides: Structural Diversity and Functional Versatility, Second Edition outlines fundamental concepts in the structure, function, chemistry, and stability of polysaccharides and reveals new analytical techniques and applications currently impacting the cosmeti
