Rheology and Processing of Liquid Crystal Polymers

Rheology and Processing of Liquid Crystal Polymers

Author: Domenico Acierno

Publisher: Springer Science & Business Media

Published: 2013-11-27

Total Pages: 331

ISBN-13: 940091511X

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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.


Rheology of Polymer Blends and Nanocomposites

Rheology of Polymer Blends and Nanocomposites

Author: Sabu Thomas

Publisher: Elsevier

Published: 2019-09-08

Total Pages: 326

ISBN-13: 0128169567

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Rheology of Polymer Blends and Nanocomposites: Theory, Modelling and Applications focuses on rheology in polymer nanocomposites. It provides readers with a solid grounding in the fundamentals of rheology, with an emphasis on recent advancements. Chapters explore potential future applications for nanocomposites and polymer blends, giving readers a thorough understanding of the specific features derived from rheology as a tool for the study of polymer blends and nanocomposites. This book is ideal for industrial and academic researchers in the field of polymer blends and nanocomposites, but is also a great resource for anyone who wants to learn about the applications of rheology. - Sets out the principles of rheology as it is applied to polymer blends and nanocomposites - Demonstrates how rheological techniques are best applied to different classes of nanocomposites - Assesses the opportunities and major challenges of rheological approaches to polymer blends and nanocomposites


Melt Rheology and Its Role in Plastics Processing

Melt Rheology and Its Role in Plastics Processing

Author: K. Wissbrun

Publisher: Springer Science & Business Media

Published: 2013-11-27

Total Pages: 684

ISBN-13: 1461597382

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This book is designed to fulfill a dual role. On the one hand it provides a description of the rheological behavior of molten poly mers. On the other, it presents the role of rheology in melt processing operations. The account of rheology emphasises the underlying principles and presents results, but not detailed deriva tions of equations. The processing operations are described qualita tively, and wherever possible the role of rheology is discussed quantitatively. Little emphasis is given to non-rheological aspects of processes, for example, the design of machinery. The audience for which the book is intended is also dual in It includes scientists and engineers whose work in the nature. plastics industry requires some knowledge of aspects of rheology. Examples are the polymer synthetic chemist who is concerned with how a change in molecular weight will affect the melt viscosity and the extrusion engineer who needs to know the effects of a change in molecular weight distribution that might result from thermal degra dation. The audience also includes post-graduate students in polymer science and engineering who wish to acquire a more extensive background in rheology and perhaps become specialists in this area. Especially for the latter audience, references are given to more detailed accounts of specialized topics, such as constitutive relations and process simulations. Thus, the book could serve as a textbook for a graduate level course in polymer rheology, and it has been used for this purpose.


Advances in Thermotropic Liquid Crystal Polymers

Advances in Thermotropic Liquid Crystal Polymers

Author: Tai-shung Chung

Publisher:

Published: 2001

Total Pages: 378

ISBN-13: 9780367800864

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Annotation Liquid crystal polymers are sometimes called super polymers--with good reason. Their wide range of exceptional properties and ease of processing make them design candidates for many demanding applications. This new book provides a thorough review of LCP technology with the emphasis on the chemistry, synthesis and characterization of the material in its many variants. Additional chapters cover processing and applications. From the Editor's Preface The field of thermotropic liquid crystalline polymers has grown substantially in the last two decades, with fundamental research, publications, commercial products, and patents. In the 1980's, Dr. Ralph Miano led my colleagues and me at Hoechst Celanese in commercializing the first thermotropic liquid crystalline polymers, based on Dr. Gordon Calundann's composition patents. Today, more than seven companies have produced thermotropic liquid crystalline polymer materials, with at least 50 variants available. Hence, it is timely to compile a comprehensive review on the nature of this type of material and the ongoing progress in this field€. The goals of this book are to summarize previous work, provide new insights into this class of polymers, and add to the understanding of the formation of liquid crystallinity. This book covers a wide range of topics and addresses different disciplines in the field. The chapters are arranged as a learning scheme for the professional, from basic science to applied engineering. The first few chapters summarize the syntheses of various polyester, polyester-amid, and polyimide liquid crystalline polymers. The science and origins of liquid crystal formation are revealed. Next, we introduce the characterizations of these materials by their different chemical and physical aspects. Because most commercially available thermotropic liquid crystalline polymers have been used in the form of composites, we have also incorporated a chapter on polymer blends, detailing blending mechanisms and resultant properties. Two chapters on thermosetting liquid crystalline polymers integrate them with other topics, because of their unique importance and their applications for microelectronics and packaging. The final chapter deals with the engineering and processing aspects of thermoplastic liquid crystalline polymers for a variety of applications.


High Temperature Polymer Blends

High Temperature Polymer Blends

Author: Mark T. DeMeuse

Publisher: Elsevier

Published: 2014-03-25

Total Pages: 233

ISBN-13: 0857099019

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Polymer blends offer properties not easily obtained through the use of a single polymer, including the ability to withstand high temperatures. High Temperature Polymer Blends outlines the characteristics, developments, and use of high temperature polymer blends. The first chapter introduces high temperature polymer blends, their general principles, and thermodynamics. Further chapters go on to deal with the characterization of high temperature polymer blends for specific uses, such as fuel cells and aerospace applications. The book discusses different types of high temperature polymer blends, including liquid crystal polymers, polysulfones, and polybenzimidazole polymer blends and their commercial applications. High Temperature Polymer Blends provides a key reference for material scientists, polymer scientists, chemists, and plastic engineers, as well as academics in these fields. - Reviews characterization methods and analysis of the thermodynamic properties of high temperature polymer blends - Reviews the use of materials such as liquid crystals as reinforcements as well as applications in such areas as energy and aerospace engineering


Liquid Crystal Elastomers

Liquid Crystal Elastomers

Author: Mark Warner

Publisher: Oxford University Press

Published: 2007-04-05

Total Pages: 423

ISBN-13: 9780199214860

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This text is a primer for liquid crystals, polymers, rubber and elasticity. It is directed at physicists, chemists, material scientists, engineers and applied mathematicians at the graduate student level and beyond.


Liquid Crystal Polymers

Liquid Crystal Polymers

Author: D. Coates

Publisher: iSmithers Rapra Publishing

Published: 2000

Total Pages: 190

ISBN-13: 9781859572146

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Liquid crystal polymers (LCPs) have a wide range of uses, from strong engineering plastics to delicate gels for use in liquid crystal (LC) displays. For this reason, it is essential reading for materials scientists, engineers or technologists in industry, as well as research laboratories or academia. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.


Processing and Properties of Liquid Crystalline Polymers and LCP Based Blends

Processing and Properties of Liquid Crystalline Polymers and LCP Based Blends

Author: Domenico Acierno

Publisher: ChemTec Publishing

Published: 1993

Total Pages: 227

ISBN-13: 1895198046

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Some papers in this book report on the most recent developments in pure liquid crystalline polymers showing that discipline is dynamic and may offer in the future numerous other opportunities not known today. We hope that our selections of papers will be interesting for specialists in polymer chemistry, blends, and their industrial application, and that information included in this book will be stimulating and will favorably impact research currently performed by the readers of this book.


Liquid Crystalline Polymers

Liquid Crystalline Polymers

Author: A. M. Donald

Publisher: Cambridge University Press

Published: 2006-05-11

Total Pages: 616

ISBN-13: 9780521580014

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A 2006 edition explaining the underlying science and applications of liquid crystalline polymers.


High Performance Polymers and Their Nanocomposites

High Performance Polymers and Their Nanocomposites

Author: Visakh P. M.

Publisher: John Wiley & Sons

Published: 2018-11-30

Total Pages: 402

ISBN-13: 1119363888

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"High Performance Polymers and Their Nanocomposites" fasst die unzähligen Forschungsergebnisse aus der jüngsten Zeit im Bereich der Hochleistungspolymere zusammen, u. a. Nanokomposite auf Basis von Hochleistungspolymeren, Flüssigkristallpolymere, Polyamid 4, 6, Polyamidimide, Polyacrylamide, Komposite auf Basis von Polyacrylamiden für verschiedene Anwendungen, Polybenzimidazole, Polycyclohexylen-Dimethylterephthalate, Polyetheretherketone, Polyetherimide, Polyetherketoneketone, Polyetherfulfone, Polyphenylensulfide, Polyphenylsulfone, Polyphthalamide, Polysulfone, eigenverstärkte Polyphenylene, thermoplastische Polyimide.