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Polymer Thermodynamics

Author: Kal Renganathan Sharma
Publisher: CRC Press
ISBN: 1439826390
Size: 78.57 MB
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Polymer Thermodynamics: Blends, Copolymers and Reversible Polymerization describes the thermodynamic basis for miscibility as well as the mathematical models used to predict the compositional window of miscibility and construct temperature versus volume-fraction phase diagrams. The book covers the binary interaction model, the solubility parameter approach, and the entropic difference model. Using equation of state (EOS) theories, thermodynamic models, and information from physical properties, it illustrates the construction of phase envelopes. The book presents nine EOS theories, including some that take into account molecular weight effects. Characteristic values are given in tables. It uses the binary interaction model to predict the compositional window of miscibility for copolymer/homopolymer blends and blends of copolymers and terpolymers with common monomers. It discusses Hansen fractional solubility parameter values, six phase diagram types, the role of polymer architecture in phase behavior, and the mathematical framework for multiple glass transition temperatures found in partially miscible polymer blends. The author also illustrates biomedical and commercial applications of nanocomposites, the properties of various polymer alloys, Fick’s laws of diffusion and their implications during transient events, and the use of the dynamic programming method in the sequence alignment of DNA and proteins. The final chapter reviews the thermodynamics of reversible polymerization and copolymerization. Polymer blends offer improved performance/cost ratios and the flexibility to tailor products to suit customers’ needs. Exploring physical phenomena, such as phase separation, this book provides readers with methods to design polymer blends and predict the phase behavior of binary polymer blends using desktop computers.

Makromolekulare Chemie

Author: Bernd Tieke
Publisher: John Wiley & Sons
ISBN: 3527683518
Size: 40.66 MB
Format: PDF, Kindle
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Die Makromolekulare Chemie (Polymerchemie) beschäftigt sich mit der Synthese, Isolierung, Charakterisierung und Modifi zierung von großen Molekülen (Polymere). Diese Moleküle können aus bis zu Hunderttausenden gleicher oder unterschiedlicher Bausteine (Monomere) bestehen und sind meistens als Ketten oder Netzwerke angeordnet. Neben den Biopolymeren (z.B. Zellulose, Enzyme, DNS) sind vor allem die synthetischen Polymere Polyethylen, Polypropylen, PVC, Polystyrol (Styropor), Nylon oder Tefl on von großem Interesse. Die dritte Auflage der „Makromolekularen Chemie“ wurde komplett überarbeitet und aktualisiert, wobei das bewährte Konzept, die Synthese, Charakterisierung, Eigenschaften und Reaktionen von Polymeren klar und anschaulich darzustellen, beibehalten wurde. Es gibt neue Kapitel zu aktuellen Trends in der Polymerchemie, z.B. Polymerblends, Polymere durch palladiumkatalysierte Kreuzkupplung, enzymatische Polymerisation, Polymere für die Optoelektronik, ferroelektrische Polymere und MALDI-TOF-Massenspektrometrie zur Charakterisierung von Polymeren. Außerdem wurde jedes Kapitel um eine kurze Zusammenfassung der wichtigsten Inhalte erweitert. Das Buch ist unentbehrlich für Studenten der Chemie und Materialwissenschaften im Bachelor- und Masterstudiengang, die die entsprechende Vorlesung nachbereiten bzw. sich auf die Prüfung vorbereiten wollen, aber auch für (Polymer-)Chemiker, die sich schnell und erfolgreich in das Gebiet einarbeiten wollen.

Principles Of Polymer Systems Sixth Edition

Author: Ferdinand Rodriguez
Publisher: CRC Press
ISBN: 1482223791
Size: 29.66 MB
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Maintaining a balance between depth and breadth, the Sixth Edition of Principles of Polymer Systems continues to present an integrated approach to polymer science and engineering. A classic text in the field, the new edition offers a comprehensive exploration of polymers at a level geared toward upper-level undergraduates and beginning graduate students. Revisions to the sixth edition include: A more detailed discussion of crystallization kinetics, strain-induced crystallization, block copolymers, liquid crystal polymers, and gels New, powerful radical polymerization methods Additional polymerization process flow sheets and discussion of the polymerization of polystyrene and poly(vinyl chloride) New discussions on the elongational viscosity of polymers and coarse-grained bead-spring molecular and tube models Updated information on models and experimental results of rubber elasticity Expanded sections on fracture of glassy and semicrystalline polymers New sections on fracture of elastomers, diffusion in polymers, and membrane formation New coverage of polymers from renewable resources New section on X-ray methods and dielectric relaxation All chapters have been updated and out-of-date material removed. The text contains more theoretical background for some of the fundamental concepts pertaining to polymer structure and behavior, while also providing an up-to-date discussion of the latest developments in polymerization systems. Example problems in the text help students through step-by-step solutions and nearly 300 end-of-chapter problems, many new to this edition, reinforce the concepts presented.

Characterization Of Polymer Blends

Author: Sabu Thomas
Publisher: John Wiley & Sons
ISBN: 3527645616
Size: 79.16 MB
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Filling the gap for a reference dedicated to the characterization of polymer blends and their micro and nano morphologies, this book provides comprehensive, systematic coverage in a one-stop, two-volume resource for all those working in the field. Leading researchers from industry and academia, as well as from government and private research institutions around the world summarize recent technical advances in chapters devoted to their individual contributions. In so doing, they examine a wide range of modern characterization techniques, from microscopy and spectroscopy to diffraction, thermal analysis, rheology, mechanical measurements and chromatography. These methods are compared with each other to assist in determining the best solution for both fundamental and applied problems, paying attention to the characterization of nanoscale miscibility and interfaces, both in blends involving copolymers and in immiscible blends. The thermodynamics, miscibility, phase separation, morphology and interfaces in polymer blends are also discussed in light of new insights involving the nanoscopic scale. Finally, the authors detail the processing-morphology-property relationships of polymer blends, as well as the influence of processing on the generation of micro and nano morphologies, and the dependence of these morphologies on the properties of blends. Hot topics such as compatibilization through nanoparticles, miscibility of new biopolymers and nanoscale investigations of interfaces in blends are also addressed. With its application-oriented approach, handpicked selection of topics and expert contributors, this is an outstanding survey for anyone involved in the field of polymer blends for advanced technologies.

Transreactions In Condensation Polymers

Author: Stoyko Fakirov
Publisher: John Wiley & Sons
ISBN: 3527613854
Size: 38.55 MB
Format: PDF, Docs
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The ability of condensation polymers to undergo additional chemical reactions, so-called transreactions, is really fascinating. These processes lead to novel copolymers with desired composition and sequential order, allow to enhance the compatibility and to minimize molecular weight fluctuations during polycondensation and processing and to provide for chemical healing of laminates of condensation polymers. An international team of highly reputated polymer chemists and physicists discusses here, first of all, various types of transreactions, but additional condensations are also detailed in many cases. - A comprehensive book of high interest to any polymer scientist in academia and industry!