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FUNCTIONAL POLYMER BLENDS Synthesis, Properties, and Performance
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Preface Polymer blends constitute a very important class of materials where the components are either physically or chemically mixed with each other to achieve a certain set of functional properties. The physical means of compatibilization of the phases in the blends are addition of compatibilizers (viz. polyethylene- co-maleic anhydride), whereas chemical means include chemical reactions with the phases for chemical linking. Polymer blends are widely used materials in the modern polymer industry because of their wider range of properties as compared to the individual polymers and their ease in tailoring of properties. As a result, polymer blends find applications in numerous fields such as adhesion, colloidal stability, design of composite and biocompatible materials, and so forth. The science and technology of polymer blends has gained tremendous developments in the recent years. A large number of polymer blend systems have been reported along with further developments on their means of synthesis, microstructure, and properties characterization. These functional polymer blend systems have helped to further enhance the application spectrum of polymers in general. The current book proposes to provide these advances in synthesis and characterization methodologies for the generation of different polymer blends systems. Chapter 1 provides an introduction as well as overview of the polymer blend systems. A number of examples of functional polymer blends have been demonstrated. Chapter 2 provides information on the miscibility enhancements in polymer blends through multiple hydrogen binding interactions. Chapter 3 presents the component dynamics prevailing in polymer blend systems. The dynamic environment differs for respective components, thereby giving rise to a difference of the segmental relaxation time of these components in both magnitude and temperature dependence. Concepts of shape memory polymer blends are presented in Chapter 4. A shape memory polymer (SMP) is a smart material that can memorize its original shape after being deformed into a temporary shape when it is heated or receives any other external stimuli such as light, electric field, magnetic field, chemical, moisture, and pH change. Ethylene methyl acrylate (EMA) copolymer toughened polymethyl methacrylate (PMMA) blends have been detailed in Chapter 5. Along with synthesis, extensive characterization of the blends for thermal, mechanical, optical, and morphological properties has been reported. Chapter 6 provides theoretical insights through molecular dynamics simulation studies for binary blend miscibility. Calculation of some important parameters, such as Flory Huggins parameter, solubility parameter, and glass transition temperature to discuss the compatibility of polymers has been presented. Chapter 7 reports on conformation and topology of cyclic linear polymer blends (CLBs). The bond fluctuation model  11.png  22.jpg |
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2015-11-15 16:03:11, 9.94 M
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