Author: Carolyn Jane LovePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Investigation of Specific Interaction Effects in Polymer Blends and Telechelic Molecules
Author: Carolyn Jane LoveEffects of Molecular Architecture and Specific (ion-dipole) Interactions on the Miscibility of Polymer Blends
Author: Siriporn PavawongsakThe Reaction of Telechelic Polymers at Multicomponent Interfaces: A Molecular Loop Study
Author: James Kevin RicePublisher:
ISBN:
Category :
Languages : en
Pages : 249
Book Description
The work presented in this dissertation attempts to form an understanding of the reaction parameters that govern the reaction of telechelic polymers to form multiply bound polymer chains, resulting in polymer loop formation, at both soft and hard polymeric interfaces. Both theoretical and experimental studies offer evidence that blocky copolymers, as opposed to random or alternating morphologies, are the best compatibilizers of a given polymer blend system. This has been attributed to the fact that blocky copolymers spread across the interface, with each block lying in or near the homopolymer region in which it is miscible, effectively "stitching" the interface together. The "loops" formed at the interface by each block of the copolymer entangle with the homopolymer chains of its respective region and can lead to finer dispersion and less coalescence of the minor phase during melt processing. We believe that interfacial loop formation is not only important to the compatibilization of immiscible polymer/polymer blend systems, but can be applied to compatibilization efforts on filled polymeric nanocomposite systems as well.
Ionomers
Author: M.R. TantPublisher: Springer Science & Business Media
ISBN: 940091461X
Category : Technology & Engineering
Languages : en
Pages : 524
Book Description
Polymers have achieved an enviable position as the class of materials having the highest volume of production, exceeding that of both metals and ceramics. The meteoric rise in the production and utilization of polymers has been due to advances in polymer synthesis which allow the creation of specific and well-defined molecular structures, to new knowledge concerning the relationships between polymer structure and properties, and to an improved understanding of how processing can be used as a tool to develop morphological features which result in desired properties. Polymers have truly become 'engineered materials' in every sense of the term. Polymer scientists and engineers are forever seeking to modify and improve the properties of synthetic polymeric systems for use in specific applications. Towards this end they have often looked to nature for advice on how to design molecules for specific needs. An excellent illustration of this is the use of noncovalent bonding (ionic, hydrogen, and van der Waals) in lipids, proteins, and nucleic acids, where these noncovalent bonds, acting both intra and intermolecularly, precisely control the structure and thus the function of the entire system. The utilization of ionic bonding, in particular in man-made polymers has attracted widespread interest in recent years, since ionic interactions exert a similar strong influence on the structure and properties of these synthetic systems.
Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 814
Book Description
Viscoelastic Properties of Immiscible Telechelic Polymer Blends
Author: Pascal CharlierBritish National Bibliography for Report Literature
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 752
Book Description
Viscoelastic Properties of Immiscible Telechelic Polymer Blends
Author: Pascal CharlierComprehensive Supramolecular Chemistry II
Author: George W. GokelPublisher: Elsevier
ISBN: 0128031999
Category : Science
Languages : en
Pages : 4627
Book Description
Comprehensive Supramolecular Chemistry II, Second Edition, Nine Volume Set is a ‘one-stop shop’ that covers supramolecular chemistry, a field that originated from the work of researchers in organic, inorganic and physical chemistry, with some biological influence. The original edition was structured to reflect, in part, the origin of the field. However, in the past two decades, the field has changed a great deal as reflected in this new work that covers the general principles of supramolecular chemistry and molecular recognition, experimental and computational methods in supramolecular chemistry, supramolecular receptors, dynamic supramolecular chemistry, supramolecular engineering, crystallographic (engineered) assemblies, sensors, imaging agents, devices and the latest in nanotechnology. Each section begins with an introduction by an expert in the field, who offers an initial perspective on the development of the field. Each article begins with outlining basic concepts before moving on to more advanced material. Contains content that begins with the basics before moving on to more complex concepts, making it suitable for advanced undergraduates as well as academic researchers Focuses on application of the theory in practice, with particular focus on areas that have gained increasing importance in the 21st century, including nanomedicine, nanotechnology and medicinal chemistry Fully rewritten to make a completely up-to-date reference work that covers all the major advances that have taken place since the First Edition published in 1996
Resident Research Associateships, Postdoctoral and Senior Research Awards
Author: National Research Council (U.S.).Publisher: National Academies
ISBN:
Category : Research
Languages : en
Pages : 356
Book Description