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In Situ X Ray Scattering Investigation Of The Evolution Of Molecular Orientation During Transient Flows Of Model Thermotropic Liquid Crystalline Polymers
Download In Situ X Ray Scattering Investigation Of The Evolution Of Molecular Orientation During Transient Flows Of Model Thermotropic Liquid Crystalline Polymers full books in PDF, epub, and Kindle. Read online In Situ X Ray Scattering Investigation Of The Evolution Of Molecular Orientation During Transient Flows Of Model Thermotropic Liquid Crystalline Polymers ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis In-Situ X-Ray Scattering Investigation of the Evolution of Molecular Orientation During Transient Flows of Model Thermotropic Liquid Crystalline Polymers by : Victor M. Ugaz
Download or read book In-Situ X-Ray Scattering Investigation of the Evolution of Molecular Orientation During Transient Flows of Model Thermotropic Liquid Crystalline Polymers written by Victor M. Ugaz and published by . This book was released on 1999 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Effect of Shear Flow on Molecular Orientation in Model Thermotropic Liquid Crystalline Polymers Using in Situ X-ray Scattering by : Victor Manuel Ugaz
Download or read book Investigation of the Effect of Shear Flow on Molecular Orientation in Model Thermotropic Liquid Crystalline Polymers Using in Situ X-ray Scattering written by Victor Manuel Ugaz and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although liquid crystalline polymers (LCPs) offer considerable commercial potential for the production of lightweight materials possessing exceptional mechanical strength, the influence of flow on molecular orientation remains poorly understood in melt processable thermotropic systems. In this thesis, a combination of materials and experimental techniques are employed which allow structural measurements to be obtained under a variety of flow conditions in the melt. In situ x-ray scattering techniques are used as a structural probe to directly measure the influence of flow on molecular orientation, and to identify the presence of other structural arrangements which would otherwise be unobservable. First, we use this structural data to identify a link between the development of a hexagonal microstructure and the onset of region I shear thinning in lyotropic poly(gamma-benzyl-L-glutamate) in m-cresol. Next, two different model thermotropic systems are studied, a polyester and polyether respectively, which incorporate molecular architectures specifically designed to provide a stable nematic phase over a wide temperature range. We present measurements of molecular orientation in steady shear flow, during relaxation after cessation of shear flow, and in the transient periods during shear flow inception and reversal. Under certain combinations of temperature and shear rate, the polyether is found to display a dramatic transition in molecular alignment to a condition where orientation is favored parallel to the vorticity direction, rather than parallel to the flow direction as is typically observed. Both materials exhibit dynamic behavior in the nematic phase consistent with flow alignment, as opposed to director tumbling behavior which is often observed in lyotropic LCPs. This hypothesis is supported by comparison with an adaptation of the Ericksen transversely isotropic fluid model and the Larson-Doi model, both of which account for the polydomain texture characteristic of LCP materials. The Larson-Doi model yields better qualitative predictions of the evolution of orientation and stress during flow reversal, suggesting that distortional elasticity plays a significant role in this type of flow. However, some discrepancies remain between the model predictions and the experimentally observed behavior, suggesting that distortional elasticity may play a different role in the rheology of thermotropic LCPs than in lyotropes.
Book Synopsis In Situ X-ray Scattering Measurements of Orientation in Channel Flows of Liquid Crystalline Polymers by : David K. Cinader
Download or read book In Situ X-ray Scattering Measurements of Orientation in Channel Flows of Liquid Crystalline Polymers written by David K. Cinader and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Rheology written by and published by . This book was released on 1999 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Basic X-Ray Scattering for Soft Matter by : Wim H. de Jeu
Download or read book Basic X-Ray Scattering for Soft Matter written by Wim H. de Jeu and published by Oxford University Press. This book was released on 2016-04-15 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray scattering is a well-established technique in materials science. Several excellent textbooks exist in this field, but these texts are typically written by physicists who use mathematics to make things clear. Consequently these books appeal less to students and scientists in the field of soft matter (polymers, liquid crystals, colloids, self-assembled organic systems) who usually have a more chemical-oriented background with limited mathematics. Moreover, they need to know about the technique of x-ray scattering, but do not intend to become an expert. The aim of this book is to explain basic principles and applications of x-ray scattering in a simple way using many practical examples followed by more elaborate case studies. The book contains a separate chapter on the different types of order/disorder in soft matter that play such an important role in modern self-assembling systems. Finally the last chapter treats soft matter surfaces and thin film that are increasingly used in coatings and in many technological applications, such as liquid crystal displays and nanostructured block copolymer films. This book has been written for the large community of soft matter students and scientists.
Book Synopsis X-Ray Scattering of Soft Matter by : Norbert Stribeck
Download or read book X-Ray Scattering of Soft Matter written by Norbert Stribeck and published by Springer Science & Business Media. This book was released on 2007-05-16 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual is a useful ready-reference guide to the analytical power of modern X-ray scattering in the field of soft matter. The author describes simple tools that can elucidate the mechanisms of structure evolution in the studied materials, and follows this up with a step-by-step guide to more advanced methods. Data analysis based on clear, unequivocal results is rendered simple and straightforward – with a stress on careful planning of experiments and adequate recording of all required data.
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 X-Ray Diffraction Study of Nematic Smectic A and C Liquid Crystals by : B. I. Ostrovskii
Download or read book X-Ray Diffraction Study of Nematic Smectic A and C Liquid Crystals written by B. I. Ostrovskii and published by CRC Press. This book was released on 1989 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews recent studies of X-ray scattering phenomena in liquid crystals, in particular their relationship to phase-transition physics. Also explored are the main approximations which are used to obtain structural information from the scattering spectre of liquid crystals and to determine the short-range order in the molecule arrangement.
Book Synopsis Encyclopedia of Materials by : K. H. J. Buschow
Download or read book Encyclopedia of Materials written by K. H. J. Buschow and published by . This book was released on 2001 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanyind CR-ROM conrtains The Encyclopedia of Materials Science and Technology on a web access disc.
Book Synopsis Particle Scattering, X-Ray Diffraction, and Microstructure of Solids and Liquids by : Manfred L. Ristig
Download or read book Particle Scattering, X-Ray Diffraction, and Microstructure of Solids and Liquids written by Manfred L. Ristig and published by Springer. This book was released on 2008-01-11 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interesting and new specific results of current theoretical and experimental work in various fields at the frontier of particle scattering and X-ray diffraction are reviewed in this volume. Special emphasis is placed on the study of the microstructure of solids, crystals and liquids, both classically and quantum mechanically. This gives the reader essential insights into the dynamics and properties of these states of matter. The authors address students interested in the physics of quantum solids, crystallography and material science as well as physical chemistry and computational physics.
Book Synopsis Diffuse X-Ray Scattering and Models of Disorder by : Thomas Richard Welberry
Download or read book Diffuse X-Ray Scattering and Models of Disorder written by Thomas Richard Welberry and published by OUP Oxford. This book was released on 2004-09-09 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffuse X-ray scattering is a rich (virtually untapped) source of local structural information over and above that obtained by conventional crystal structure determination (crystallography). The main aim in the book is to show how computer simulation of a model crystal provides a general method by which diffuse scattering of all kinds and from all types of materials can be interpreted and analysed. Part I of the book gives a description of the experimental methods used to obtain diffuse scattering data. Part II describes a number of simple stochastic models of disorder, which allows various concepts to be established and enables simple examples to be generated to illustrate key principles. Part III describes example studies of a wide variety of real materials. These examples not only document the development of computer simulation methods for investigating and analysing disorder problems but also provide a resource for helping future researchers recognise the kinds of effects which can occur and for pointing the way to tackling new problems which are encountered.
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: The availability of synchrotron x-ray sources and the subsequent developments described in this book have led to substantial progress in our understanding of molecular ordering at liquid interfaces. This practical guide enables graduate students and researchers working in physics, chemistry, biology and materials science to understand and carry out experimental investigations into the basic physical and chemical properties of liquid surfaces and interfaces. The book examines the surfaces of bulk liquids, thin wetting films and buried liquid-liquid interfaces. It discusses experiments on simple and complex fluids, including pure water and organic liquids, liquid crystals, liquid metals, electrified liquid-liquid interfaces and interfacial monolayers of amphiphiles, nanoparticles, polymers and biomolecules. A detailed description of the apparatus and techniques required for these experiments is provided, and theoretical approaches to data analysis are described, including approximate methods such as the Master formula, the Born approximation, Parratt's algorithm and the Distorted Wave Approximation.
Book Synopsis X-ray Scattering from Semiconductors by : Paul F. Fewster
Download or read book X-ray Scattering from Semiconductors written by Paul F. Fewster and published by World Scientific. This book was released on 2000 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray scattering is used extensively to provide detailed structural information about materials. Semiconductors have benefited from X-ray scattering techniques as an essential feedback method for crystal growth, including compositional and thickness determination of thin layers. The methods have been developed to reveal very detailed structural information concerning material quality, interface structure, relaxation, defects, surface damage, and more.
Book Synopsis The Physics of Polymers by : Gert R. Strobl
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 2013-03-09 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer physics is one of the key courses not only in polymer science but also in material science. In his textbook Strobl presents the elements of polymer physics to the necessary extent in a very didactical way. His main focus is on the concepts and major phenomena of polymer physics, not just on mere physical methods. He has written the book in a personal style evaluating the concepts he is dealing with. Every student in polymer and materials science will be happy to have it on his shelf.
Book Synopsis Diffuse X-Ray Scattering and Models of Disorder by : T. R. Welberry
Download or read book Diffuse X-Ray Scattering and Models of Disorder written by T. R. Welberry and published by Oxford University Press. This book was released on 2022 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Diffuse X-ray scattering is a rich source of local structural information over and above that obtained by conventional crystal structure determination (crystallography). The main aim in the book is to show how computer simulation of a model crystal provides a general method by which diffuse scattering of all kinds and from all types of materials can be interpreted and analysed. Part I gives a description of the experimental methods used to obtain diffuse scattering data including recent improvements both in synchrotron and neutron facilities and latest detectors that are now available. Part II describes a number of stochastic models of disorder, which allows various concepts to be established and enables simple examples to be generated to illustrate key principles. Part III describes example studies of a wide variety of real materials. These examples not only document the development of computer simulation methods for investigating and analysing disorder problems but also provide a resource for helping future researchers recognise the kinds of effects which can occur and for pointing the way to tackling new problems which are encountered. Part IV describes more recent studies in which the increased computational power, coupled with improvements in the quality and quantity of data that is now obtainable, has allowed more quantitative and detailed analyses to be undertaken"--
Book Synopsis Real-Time X-Ray Scattering Study of Processing of Eight Performance Thermoplastics by :
Download or read book Real-Time X-Ray Scattering Study of Processing of Eight Performance Thermoplastics written by and published by . This book was released on 1994 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the research was to use real time X-ray scattering: (1) to assist in development of a model for the shrinkage of thermoplastic polymers during processing, and (2) to study the kinetics of crystal structure development. The principle tasks involved real-time X-ray scattering experiments. The secondary tasks involved characterization studies of the materials. We are using real time X ray scattering to study the shrinkage of crystallizable thermoplastic polymers during heat treatment. Most processing models in use today do not use data collected in situ. The matrix shrinkage is determined in real time, directly from x ray scattering. The evolution of cell structure that develops during crystallization can be detected by small angle and wide angle real time x ray scattering.
