Excluded Volume Effects in Bottle-brush Polymers, and Wetting Transitions of Ionic Solutions PDF Download

Author: Natasha Alexandrovna Denesyuk
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Lothar Schäfer
Publisher: Springer Science & Business Media
ISBN: 364260093X
Category : Science
Languages : en
Pages : 554

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Schäfer gives a concise overview of the static equilibrium properties of polymer solutions. In the first part diagrammatic perturbation theory is derived from scratch. The second part illustrates the basic ideas of the renormalization group (RG). The crucial role of dilation invariance is stressed. The more efficient method of dimensional regularization and minimal subtractions is worked out in part three. The fourth part contains a unified evaluation of the theory to the one loop level. All the important experimental quantities are discussed in detail, and the results are compared extensively to experiment. Empirical methods of data analysis are critically discussed. The final (fifth) part is devoted to extensions of theory. The first three parts of this book may serve as the basis of a course. Parts four and five are hoped to be useful for detailed quantitative evaluations of experiments.

Author: Eamon Francis Jeffers
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Category : Dissertations, Academic
Languages : en
Pages : 1032

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Theses on any subject submitted by the academic libraries in the UK and Ireland.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 37

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The effect of excluded volume on the coil size of dilute linear polymers was investigated by off-lattice Monte Carlo simulations. The radius of gyration R{sub g} was evaluated for a wide range of chain lengths at several temperatures and at the athermal condition. The theta temperature and the corresponding theta chain dimensions were established for the system, and the dependence of the size expansion factor, a{sub s} = R{sub g} /(R{sub g}){sub {theta}}, on chain length N and temperature T was examined. For long chains and at high temperatures, a{sub s} is a function of N/N{sub s}2 alone, where the length scale N{sub s}2 depends only on T. The form of this simulations-based master function compares favorably with [alpha]{sub s}(M/M{sub s}2), an experimental master curve for linear polymers in good solvents, where M{sub s}2 depends only on polymer-solvent system. Comparisons when N{sub s}2(T) and M{sub s}2(system) are reduced to common units, numbers of Kuhn steps, strongly indicate that coil expansion in even the best of good solvents is small relative to that expected for truly athermal solutions. An explanation for this behavior is proposed, based on what would appear to be an inherent difference in the equation of state properties for polymeric and monomeric liquids.

Author: Sergiy Minko
Publisher: Wiley-Blackwell
ISBN: 9780813821092
Category : Science
Languages : en
Pages : 288

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This new book offers practical insights into the latest developments in responsive polymers, i.e., polymers engineered to alter structure and properties in response to environmental inputs. The book features original design, methodological, and application data. Chemists, biochemists, and electronic engineers will find here important new material to understand and characterize molecular and submolecular assemblies that enable the fabrication of switch-driven polymer systems. Beginning from basic research and moving to single-molecular design, the contributors illuminate switching in self-assembled aggregates of polymer chains. These analyses are extended to the switching/changing of macroscopic properties in bulk and thin films. The book demonstrates how the properties of responsive polymers such as morphology, wetting behavior, adhesion, roughness, permeability etc., can be modified to create and improve biomedical devices, chemical sensors, microfluidic devices, drug delivery systems, adhesion systems, and self-regulating colloids. For specialists investigating the potential of molecular and submolecular polymer design, this book is essential.

Author: Wenbing Hu
Publisher: Springer Science & Business Media
ISBN: 3709106702
Category : Technology & Engineering
Languages : en
Pages : 248

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A molecular view on the fundamental issues in polymer physics is provided with an aim at students in chemistry, chemical engineering, condensed matter physics and material science courses. An updated translation by the author, a renowned Chinese chemist, it has been proven to be an effective source of learning for many years. Up-to-date developments are reflected throughout the work in this concise presentation of the topic. The author aims at presenting the subject in an efficient manner, which makes this particularly suitable for teaching polymer physics in settings where time is limited, without having to sacrifice the extensive scope that this topic demands.

Author: Iwao Teraoka
Publisher: John Wiley & Sons
ISBN: 0471460761
Category : Science
Languages : en
Pages : 355

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Polymer Solutions: An Introduction to Physical Properties offers a fresh, inclusive approach to teaching the fundamentals of physical polymer science. Students, instructors, and professionals in polymer chemistry, analytical chemistry, organic chemistry, engineering, materials, and textiles will find Iwao Teraoka’s text at once accessible and highly detailed in its treatment of the properties of polymers in the solution phase. Teraoka’s purpose in writing Polymer Solutions is twofold: to familiarize the advanced undergraduate and beginning graduate student with basic concepts, theories, models, and experimental techniques for polymer solutions; and to provide a reference for researchers working in the area of polymer solutions as well as those in charge of chromatographic characterization of polymers. The author’s incorporation of recent advances in the instrumentation of size-exclusion chromatography, the method by which polymers are analyzed, renders the text particularly topical. Subjects discussed include: Real, ideal, Gaussian, semirigid, and branched polymer chains Polymer solutions and thermodynamics Static light scattering of a polymer solution Dynamic light scattering and diffusion of polymers Dynamics of dilute and semidilute polymer solutions Study questions at the end of each chapter not only provide students with the opportunity to test their understanding, but also introduce topics relevant to polymer solutions not included in the main text. With over 250 geometrical model diagrams, Polymer Solutions is a necessary reference for students and for scientists pursuing a broader understanding of polymers.

Author: A. I?U. Grosberg
Publisher: World Scientific
ISBN: 9812839224
Category : Technology & Engineering
Languages : en
Pages : 347

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?? Giant molecules are important in our everyday life. But, as pointed out by the authors, they are also associated with a culture. What Bach did with the harpsichord, Kuhn and Flory did with polymers. We owe a lot of thanks to those who now make this music accessible ??Pierre-Gilles de GennesNobel Prize laureate in Physics(Foreword for the 1st Edition, March 1996)This book describes the basic facts, concepts and ideas of polymer physics in simple, yet scientifically accurate, terms. In both scientific and historic contexts, the book shows how the subject of polymers is fascinating, as it is behind most of the wonders of living cell machinery as well as most of the newly developed materials. No mathematics is used in the book beyond modest high school algebra and a bit of freshman calculus, yet very sophisticated concepts are introduced and explained, ranging from scaling and reptations to protein folding and evolution. The new edition includes an extended section on polymer preparation methods, discusses knots formed by molecular filaments, and presents new and updated materials on such contemporary topics as single molecule experiments with DNA or polymer properties of proteins and their roles in biological evolution.

Author: Rodney Priestley
Publisher: Royal Society of Chemistry
ISBN: 1788014170
Category : Science
Languages : en
Pages : 442

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Academic and industrial research around polymer-based colloids is huge, driven both by the development of mature technologies, e.g. latexes for coatings, as well as the advancement of new materials and applications, such as building blocks for 2D/3D structures and medicine. Edited by two world-renowned leaders in polymer science and engineering, this is a fundamental text for the field. Based on a specialised course by the editors, this book provides the reader with an invaluable single source of reference. The first section describes formation, explaining basic properties of emulsions and dispersion polymerization, microfluidic approaches to produce polymer-based colloids and formation via directed self-assembly. The next section details characterisation methodologies from microscopy and small angle scattering, to surface science and simulations. The final chapters close with applications, including Pickering emulsions and molecular engineering for materials development. A comprehensive guide to polymer colloids, with contributions by leaders in their respective areas, this book is a must-have for researchers and practitioners working across polymers, soft matter and chemical and molecular engineering.