Mechanical and Thermophysical Properties of Polymer Liquid Crystals PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Mechanical and Thermophysical Properties of Polymer Liquid Crystals PDF full book. Access full book title Mechanical and Thermophysical Properties of Polymer Liquid Crystals by Witold Brostow. Download full books in PDF and EPUB format.
Author: Witold Brostow
Publisher: Springer Science & Business Media
ISBN: 1461557992
Category : Technology & Engineering
Languages : en
Pages : 534
Get Book Here
Book Description
may never overcome the effects of hysteresis and stress (see Chapters 6 and 12). The first sentence of the reference work, Handbook of Liquid Crystals, reads: The terms liquid crystals, crystalline liquid, mesophase, and mesomorphous state are used synonymously to describe a state of aggregation that exhibits a molecular order in a size range similar to that of a crystal but acts more or less as a viscous liquid: [2] In other words, molecules within a liquid crystalline phase possess some orientational order and lack positional order; furthermore, the shape of a liquid crystalline sample is determined by the vessel in which it is contained rather than by the orientational order of its aggregated molecules. The authors recognized the limitations and imprecision of this definition but, like others preceding them, could not devise a simple and generally applicable one that is better. Regardless, the terms 'liquid crystal' and 'mesophase' should not be used interchangeably. As mentioned above, all liquid crystals are mesophases, but all mesophases are not liquid crystals. Recent studies, employing elaborate and sophisticated analytical techniques, have permitted finer distinctions between classical crystals and mesophases. At the same time, they have made definitions like that from the Handbook of Liquid Crystals somewhat obsolete for reasons other than terminology. One part of the problem arises from the use of a combination of bulk properties (like flow) and microscopic properties (like molecular ordering) within the same definition.
Author: Witold Brostow
Publisher: Springer Science & Business Media
ISBN: 1461557992
Category : Technology & Engineering
Languages : en
Pages : 534
Get Book Here
Book Description
may never overcome the effects of hysteresis and stress (see Chapters 6 and 12). The first sentence of the reference work, Handbook of Liquid Crystals, reads: The terms liquid crystals, crystalline liquid, mesophase, and mesomorphous state are used synonymously to describe a state of aggregation that exhibits a molecular order in a size range similar to that of a crystal but acts more or less as a viscous liquid: [2] In other words, molecules within a liquid crystalline phase possess some orientational order and lack positional order; furthermore, the shape of a liquid crystalline sample is determined by the vessel in which it is contained rather than by the orientational order of its aggregated molecules. The authors recognized the limitations and imprecision of this definition but, like others preceding them, could not devise a simple and generally applicable one that is better. Regardless, the terms 'liquid crystal' and 'mesophase' should not be used interchangeably. As mentioned above, all liquid crystals are mesophases, but all mesophases are not liquid crystals. Recent studies, employing elaborate and sophisticated analytical techniques, have permitted finer distinctions between classical crystals and mesophases. At the same time, they have made definitions like that from the Handbook of Liquid Crystals somewhat obsolete for reasons other than terminology. One part of the problem arises from the use of a combination of bulk properties (like flow) and microscopic properties (like molecular ordering) within the same definition.
Author: Domenico Acierno
Publisher: Springer Science & Business Media
ISBN: 940091511X
Category : Technology & Engineering
Languages : en
Pages : 331
Get Book Here
Book Description
Liquid crystal polymers (LCPs) have many strange properties that may be utilized to advantage in the processing of products made from them and their blends with isotropic polymers. This volume (volume 2 in the series Polymer Liquid Crystals) deals with their strange flow behaviour and the models put forward to explain the phenomena that occur in such polymers and their blends. It has been known for some time that small ad ditions of a thermotropic LCP to isotropic polymers not only gives an improvement in the strength and stiffness of the blend but improves the processability of the blend over that of the isotropic polymer. In the case of lyotropic LCPs, it is possible to create a molecular composite in which the reinforcement of an isotropic polymer is achieved at a molecular level by the addition of the LCP in a common solvent. If the phenomena can be fully understood both the reinforcement and an increase in the proces sability of isotropic polymers could be optimized. This book is intended to illustrate the current theories associated with the flow of LCPs and their blends in the hope that such an optimization will be achieved by future research. Chapter 1 introduces the subject of LCPs and describes the ter minology used; Chapter 2 then discusses the more complex phenomena associated with these materials. In Chapter 3, the way in which these phe nomena may be modelled using hamiltonians is fully covered.
Author: P. M. Visakh
Publisher: Woodhead Publishing
ISBN: 0128221631
Category : Technology & Engineering
Languages : en
Pages : 306
Get Book Here
Book Description
Liquid Crystal Polymer Nanocomposites summarizes, in a comprehensive manner, numerous modern technical research accomplishments on the development of nanocomposites from liquid crystalline polymers. It emphasizes various studies at the nano-scale, including discussions of liquid crystalline block copolymers, liquid crystalline epoxy nanocomposites, barrier property studies of liquid crystalline epoxy and their nanocomposites, liquid crystalline polymer-based microfibrillar and nanofibrillar composites, liquid crystalline polymer/nanoplatelet nanocomposites, liquid-crystalline elastomer/graphene oxide nanocomposites, and thermotropic liquid crystalline polymers. It provides detailed information on methods of preparation, the properties of these materials and a discussion on the structure-properties relationship. With an emphasis on data and experimental results, the book's authors illustrate how the liquid crystal structure can have an impact on the final properties of nanocomposite. Contains contributions from leading experts working in this specialized field of research Provides detailed information on the preparation, characterization and application of nanocomposites of liquid crystalline polymers Presents solutions to both fundamental and applied problems
Author:
Publisher:
ISBN: 9789741433865
Category : Biosurfactants
Languages : en
Pages : 148
Get Book Here
Book Description
The liquid crystal polymer/organoclay composites were prepared by melt intercalation of liquid crystal polymer and montmorillonite clay organically modified with intercalating agent. The surfactant, haxadecyltrimethyl ammonium bromide was used to modify the montmorillonite surface to obtain the organoclay by ionic exchange between the interlayer cation and the surfactant cation. The resulting liquid crystal polymer intercalated into the organoclay was characterized by X-ray diffraction (XRD) and Fourier Transform Infrared spectrometry (FTIR). Tensile testing indicated that the reinforcement in the composites was more effective than pure polymer. The thermal stability and flammability of the liquid crystal polymer/organoclay composite were measured by thermogravimetric analysis (TGA) and UL- 94, respectively. By adding organoclay, the thermal stability was improved but the surfactant decreased the thermal stability. The UL- 94, V- 0 rating was achieved for the liquid crystal polymer/organoclay composites with varying organoclay contents.
Author: Sabu Thomas
Publisher: William Andrew
ISBN: 032339454X
Category : Technology & Engineering
Languages : en
Pages : 444
Get Book Here
Book Description
Design and Applications of Nanostructured Polymer Blend and Nanocomposite Systems offers readers an intelligent, thorough introduction to the design and applications of this new generation of designer polymers with customized properties. The book assembles and covers, in a unified way, the state-of-the-art developments of this less explored type of material. With a focus on nanostructured polymer blends, the book discusses the science of nanostructure formation and the potential performance benefits of nanostructured polymer blends and composites for applications across many sectors: electronics, coatings, adhesives, energy (photovoltaics), aerospace, automotive, and medical devices (biocompatible polymers). The book also describes the design, morphology, and structure of nanostructured polymer composites and blends to achieve specific properties. Covers all important information for designing and selecting the right nanostructured polymer system Provides specialized knowledge on self-repairing, nanofibre and nanostructured multiphase materials, as well as evaluation and testing of nanostructured polymer systems Serves as a reference guide for development of new products in industries ranging from electronics, coatings, and energy, to transport and medical applications Describes the design, morphology, and structure of nanostructured polymer composites and blends to achieve specific properties
Author: Visakh P. M.
Publisher: John Wiley & Sons
ISBN: 1119363888
Category : Technology & Engineering
Languages : en
Pages : 402
Get Book Here
Book Description
“High Performance Polymers and Their Nanocomposites” summarizes many of the recent research accomplishments in the area of high performance polymers, such as: high performance polymers-based nanocomposites, liquid crystal polymers, polyamide 4, 6, polyamideimide, polyacrylamide, polyacrylamide-based composites for different applications, polybenzimidazole, polycyclohexylene dimethyl terephthalate, polyetheretherketone, polyetherimide, polyetherketoneketone, polyethersulfone, polyphenylene sulphide, polyphenylsulfone, polyphthalamide, Polysulfone, self-reinforced polyphenylene, thermoplastic polyimide.
Author: Shri Singh
Publisher: Springer Nature
ISBN: 303150058X
Category :
Languages : en
Pages : 578
Get Book Here
Book Description
Author: James E. Mark
Publisher: Springer Science & Business Media
ISBN: 0387690026
Category : Technology & Engineering
Languages : en
Pages : 1050
Get Book Here
Book Description
This book offers concise information on the properties of polymeric materials, particularly those most relevant to physical chemistry and chemical physics. Extensive updates and revisions to each chapter include eleven new chapters on novel polymeric structures, reinforcing phases in polymers, and experiments on single polymer chains. The study of complex materials is highly interdisciplinary, and new findings are scattered among a large selection of scientific and engineering journals. This book brings together data from experts in the different disciplines contributing to the rapidly growing area of polymers and complex materials.
Author: George P. Simon
Publisher: Routledge
ISBN: 1351423614
Category : Technology & Engineering
Languages : en
Pages : 865
Get Book Here
Book Description
Distinguishing among blends, alloys and other types of combinations, clarifying terminology and presenting data on new processes and materials, this work present up-to-date and effective compounding techniques for polymers. It offers extensive analyses on the challenging questions that surround miscibility, compatibility, dynamic processing, interaction/phase behaviour, and computer simulations for predicting behaviours of polymer mixture and interaction.
Author: A. M. Donald
Publisher: Cambridge University Press
ISBN: 9780521580014
Category : Science
Languages : en
Pages : 616
Get Book Here
Book Description
A 2006 edition explaining the underlying science and applications of liquid crystalline polymers.
