Neutron Spin Echo In Polymer Systems
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Neutron Spin Echo In Polymer Systems
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Author : Dieter Richter
language : en
Publisher:
Release Date : 2005
Neutron Spin Echo In Polymer Systems written by Dieter Richter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Neutron Spin Echo In Polymer Systems
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Author : Dieter Richter
language : en
Publisher: Springer
Release Date : 2009-09-02
Neutron Spin Echo In Polymer Systems written by Dieter Richter and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-09-02 with Technology & Engineering categories.
Neutron Spin Echo In Polymer Systems
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Author : Dieter Richter
language : en
Publisher: Springer Science & Business Media
Release Date : 2005-04-11
Neutron Spin Echo In Polymer Systems written by Dieter Richter and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-04-11 with Technology & Engineering categories.
1 Introduction.- 2 Neutron Scattering and Neutron Spin Echo.- 3 Large Scale Dynamics of Homopolymers.-
Neutron Spin Echo Spectroscopy Viscoelasticity Rheology
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Author :
language : en
Publisher: Springer
Release Date : 2003-09-05
Neutron Spin Echo Spectroscopy Viscoelasticity Rheology written by and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-09-05 with Technology & Engineering categories.
Viscoelasticandtransportpropertiesofpolymersintheliquid(solution,melt)or liquid-like (rubber) state determine their processing and application to a large extent and are of basic physical interest [1—3]. An understanding of these dynamic properties at a molecular level, therefore, is of great importance. However,thisunderstandingiscomplicatedbythefactsthatdi?erentmotional processes may occur on di?erent length scales and that the dynamics are governed by universal chain properties as well as by the special chemical structure of the monomer units [4,5]. The earliest and simplest approach in this direction starts from Langevin equations with solutions comprising a spectrum of relaxation modes [1—4]. Special features are the incorporation of entropic forces (Rouse model, [6]) which relax uctuations of reduced entropy, and of hydrodynamic interactions (Zimm model, [7]) which couple segmental motions via long-range back ow elds in polymer solutions, and the inclusion of topological constraints or entanglements (reptation or tube model, [8—10]) which are mutually imposed within a dense ensemble of chains. Another approach, neglecting the details of the chemical structure and concentratingontheuniversalelementsofchainrelaxation,isbasedondynamic scalingconsiderations[4,11].Inparticularinpolymersolutions,thisapproach o?ers an elegant tool to specify the general trends of polymer dynamics, although it su?ers from the lack of a molecular interpretation. A real test of these theoretical approaches requires microscopic methods, which simultaneously give direct access to the space and time evolution of the segmental di?usion. Here, quasi-elastic scattering methods play a crucial role sincetheyallowthemeasurementofthecorrespondingcorrelationfunctions.In particular,thehigh-resolutionneutronspinecho(NSE)spectroscopy[12—15]is very suitable for such investigations since this method covers an appropriate range in time (0.005)t/ns)40) and space (r/nm [15). Furthermore, the possibilityoflabellingbyhydrogen-deuteriumexchangeallowstheobservation of single-chain behavior even in the melt.
Neutron Spin Echo Spectroscopy
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Author : Ferenc Mezei
language : en
Publisher:
Release Date : 2014-01-15
Neutron Spin Echo Spectroscopy written by Ferenc Mezei and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-01-15 with categories.
Neutron Spin Echo Spectroscopy
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Author : Ferenc Mezei
language : en
Publisher: Springer
Release Date : 2008-01-11
Neutron Spin Echo Spectroscopy written by Ferenc Mezei and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-11 with Science categories.
Neutron spin echo (NSE) spectroscopy is the highest energy resolution neutron scattering technique available for examining a large area (in time and space) in condensed matter physics. This broad dynamic and spatial range is extensively exploited in the study of a wide range of scientific problems ranging from the dynamics of glasses, polymer melts, complex fluids and microemulsions to the elementary excitations in superfluid 4He and to ferromagnets and spin glasses. This book reviews the current status and future prospects in NSE spectroscopy describing the method, latest instrumentation and also the use of NSE in fundamental, hard- and soft-matter science. It provides first-hand information for researchers working in the fields touched by NSE. In addition, young researchers, PhD students and graduates interested in the method will obtain a comprehensive overview and guidelines to implementing the NSE technique.
Dynamics Of Soft Matter
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Author : VICTORIA GARCIA SAKAI
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-12-18
Dynamics Of Soft Matter written by VICTORIA GARCIA SAKAI and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-12-18 with Technology & Engineering categories.
Dynamics of Soft Matter: Neutron Applications provides an overview of neutron scattering techniques that measure temporal and spatial correlations simultaneously, at the microscopic and/or mesoscopic scale. These techniques offer answers to new questions arising at the interface of physics, chemistry, and biology. Knowledge of the dynamics at these levels is crucial to understanding the soft matter field, which includes colloids, polymers, membranes, biological macromolecules, foams, emulsions towards biological & biomimetic systems, and phenomena involving wetting, friction, adhesion, or microfluidics. Emphasizing the complementarities of scattering techniques with other spectroscopic ones, this volume also highlights the potential gain in combining techniques such as rheology, NMR, light scattering, dielectric spectroscopy, as well as synchrotron radiation experiments. Key areas covered include polymer science, biological materials, complex fluids and surface science.
Single Chain Polymer Nanoparticles
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Author : José A. Pomposo
language : en
Publisher: John Wiley & Sons
Release Date : 2017-12-04
Single Chain Polymer Nanoparticles written by José A. Pomposo and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-04 with Technology & Engineering categories.
This first book on this important and emerging topic presents an overview of the very latest results obtained in single-chain polymer nanoparticles obtained by folding synthetic single polymer chains, painting a complete picture from synthesis via characterization to everyday applications. The initial chapters describe the synthetics methods as well as the molecular simulation of these nanoparticles, while subsequent chapters discuss the analytical techniques that are applied to characterize them, including size and structural characterization as well as scattering techniques. The final chapters are then devoted to the practical applications in nanomedicine, sensing, catalysis and several other uses, concluding with a look at the future for such nanoparticles. Essential reading for polymer and materials scientists, materials engineers, biochemists as well as environmental chemists.
Spin Echo Small Angle Neutron Scattering Applied To Colloidal Systems
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Author : T. Kruglov
language : en
Publisher: Ios PressInc
Release Date : 2005-01-01
Spin Echo Small Angle Neutron Scattering Applied To Colloidal Systems written by T. Kruglov and has been published by Ios PressInc this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-01-01 with Science categories.
A new technique has its value as long as it is known what it measures, not only how it measures. Paradoxically the actual development and application of Spin-echo Small-Angle Neutron Scattering (SESANS) started before its measured quantities were fully interpreted. This publication provides a manual on the methodology and interpretation of the SESANS measurements. Chapter 'Theory' could also have been named 'What SESANS actually measures'. Chapter 'Experiment' could have been named 'What SESANS is actually able to measure'. The subject of this book, both theoretical and experimental, is focused on isotropic particles (solid spheres, shells and gaussian coils) and structures formed by spherical particles.
Polymer Viscoelasticity
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Author : Y.-H. Lin
language : en
Publisher: World Scientific
Release Date : 2011
Polymer Viscoelasticity written by Y.-H. Lin and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Science categories.
This book covers in great detail the Rouse-segment-based molecular theories in polymer viscoelasticity ? the Rouse theory and the extended reptation theory (based on the framework of the Doi?Edwards theory) ? that have been shown to explain experimental results in a consistently quantitative way. The explanation for the 3.4 power law of viscosity, quantitative line-shape analyses of viscoelastic responses and agreements between different sorts of viscoelastic responses, the consistency between the viscoelasticity and diffusion results, the clarification of the onset of entangelement, the discovery of the number of entanglement strands per cubed entanglement distance being a universal constant and the basic mechanism of the glass transition-related thermorheological complexity are discussed or shown in great detail. The mystery behind the success of the Rouse-segment-based molecular theories over the entropic region of a viscoelastic response is revealed by the Monte Carlo simulations on the Fraenkel chains. Specifically, the simulation studies give a natural explanation for the coexistence of the energy-driven and entropy-driven modes in a viscoelastic response and provide a theoretical basis resolving the paradox that the experimentally determined sizes of Rouse and Kuhn segments are nearly the same. This book starts from a very fundamental level; each chapter is built upon the contents of the previous chapters. Thus, the readers may use the book as a textbook and eventually reach an advanced research level. This book is also a useful source of reference for physicists, chemists and material scientists.