This Book Covers Wide Range Of Topics In The Polymer Rheology. These Include -The Basic Principles, Parameters, Systems And Applied Mathematical Models Used In The Rheological Studies. The Melt Flow Analysis Of Different Non-Newtonian Fluids In Laminar Flow, Transition Between Laminar And Turbulent Flow And Modified Reynolds Etc. The Effects Of Different Physical And Molecular Parameters On Purely Viscous Rheological Response Of Polymer Melts And Solutions. Principles Of Rheometery And Different Types Viscometers And On-Line Rheometers. The Static And Dynamic Viscoelastic Response Of The Polymer Melts And Solutions, Linear Viscoelasticity. Mechanical Models And Boltzmann Superposition Principle. Molecular Structure - Viscoelasticity Relationship And Linear And Non-Linear Viscoelasticity. A Good Number Of Solved Examples And Exercise Problems.The Book Will Be Of Immense Help To Both Under Graduate And Post-Graduate Students, Teachers, Polymer Engineers And Practicing Rheologists. Content Highlights : - # Preface # Introduction # Rheological Principles # Melt Flow Analysis # Parameters Influencing The Polymer Rheology # Rheometry # Viscoelastic Behaviour # Viscoelastic Functions : Effect Of Various Parameters # Rheology In Polymer And Rubber Processing # References
Experts in rheology and polymer processing present up-to-date, fundamental and applied information on the rheological properties of polymers, in particular those relevant to processing, contributing to the physical understanding and the mathematical modelling of polymer processing sequences. Basic concepts of non-Newtonian fluid mechanics, micro-rheological modelling and constitutive modelling are reviewed, and rheological measurements are described. Topics with practical relevance are debated, such as linear viscoelasticity, converging and diverging flows, and the rheology of multiphase systems. Approximation methods are discussed for the computer modelling of polymer melt flow. Subsequently, polymer processing technologies are studied from both simulation and engineering perspectives. Mixing, crystallization and reactive processing aspects are also included. Audience: An integrated and complete view of polymer processing and rheology, important to institutions and individuals engaged in the characterisation, testing, compounding, modification and processing of polymeric materials. Can also support academic polymer processing engineering programs.
"Rheology in Polymer Processing" introduces the fundamentals of rheology and rheometry as the basis for modeling and computer-aided design in plastics processing. The logically structured content enables the reader to intelligently use the tools of computer-aided design and modeling of plastics processing, with correct interpretation of the results. The book presents difficult and complex issues of rheology and modeling in an accessible way, with particular emphasis on the practical engineering aspects. The software described in the book allows modeling all the important problems of plastics processing. Particular attention is paid to the extrusion process, which is fundamentally important as a processing technology in mass manufacture of plastic parts, and the basis of compounding processes (blending, filling, granulation, and reinforcement). This book is aimed equally at engineers, researchers, and scientists, as well as intermediate students, for whom it will serve as an ideal course book.
This book presents the main results obtained by different laboratories involved in the research group Rheology for polymer melt processing which is associated with French universities, schools of engineering, and the CNRS (Centre National de la Recherche Scientifique - France). The group comprises some 15 research laboratories of varied disciplines (chemistry, physics, material sciences, mechanics, mathematics), but with a common challenge viz. to enhance the understanding of the relationships between macromolecular species, their rheology and their processing. Some crucial issues of polymer science have been addressed: correlation of viscoelastic macroscopic bulk property measurements and models, slip at the wall, extrusion defects, correlation between numerical flow simulations and experiments. Features of the book: • The book is unique in that it allows one to grasp the key issues in polymer rheology and processing at once through a series of detailed state-of-the-art contributions, which were previously scattered throughout the literature. • Each paper was reviewed by experts and the book editors and some coordination was established in order to achieve a readable and easy access style. • Papers have been grouped in sections covering successively: Molecular dynamics, Constitutive equations and numerical modelling, Simple and complex flows. • Each paper can be read independently. Since the book is intended as an introduction to the main topics in polymer processing, it will be of interest to graduate students as well as to scientists in academic and industrial laboratories.
This book explores the ways in which melt flow behaviour can be exploited by the plastics engineer and technician for increased efficiency of processing operation, control of end product properties and selection and development of polymers for specific purposes. (reissued with minor corrections 1994)
An Introduction to Polymer Rheology and Processing is a practical desk reference providing an overview of operating principles, data interpretation, and qualitative explanation of the importance and relationship of rheology to polymer processing operations. It covers full-scale processing operations, relating industrial processing operations and design methodology to laboratory-scale testing. Hundreds of design formulas applicable to scaling up the processing behavior of polymeric melts are presented. The book also provides a "working knowledge" description of major rheological test methods useful in product development and includes a useful glossary of polymer and test method/instrumentation definitions. Lavishly illustrated and featuring numerous sample calculations and modeling approaches, An Introduction to Polymer Rheology and Processing is a "must have" book for polymer engineers and rheologists.
An introduction to the rheology of polymers, with simplemath Designed for practicing scientists and engineers interested inpolymer rheology science, education, consulting, or research anddevelopment, Introduction to Polymer Rheology is acomprehensive yet accessible guide to the study of the deformationand flow of matter under applied stress. Often considered acomplicated topic for beginners, the book makes grasping thefundamentals of polymer rheology easy by presenting information inan approachable way and limiting the use of complex mathematics. Bydoing so, this introductory overview provides readers with easyaccess to the key concepts underlying the flow behavior of polymermelts, solutions, and suspensions. Incorporating sample problemsthat are worked through and explained on the page, as well asnumerous practice problems to gauge learning comprehension, thebook prepares new students and practitioners for moving on to moreadvanced concepts. Comprising twelve chapters, the book covers stress, velocity andrate of deformation, the relationship between stress and rate ofdeformation (Newtonian fluid), generalized Newtonian fluids, normalstresses and elastic behavior, experimental methods, small andlarge strain, the molecular origins of rheological behavior,elementary polymer processing concepts, quality control inrheology, and the flow of modified polymers and those withsupermolecular structure. The essential reference for accurately interpreting polymerrheology data, Introduction to Polymer Rheology providesreaders with an elementary understanding of the key issues andmodern approaches to resolving problems in the field. An Instructor’s Guide with answers to select problems in thetext, 60 new problems with full solutions, hints for effectivepresentation of the material in the text, and an errata listing isavailable for professors using the book as a course textbook.
Rheology unites the seemingly unrelated fields of plasticity and non-Newtonian fluids by recognizing that both these types of materials are unable to support a shear stress in static equilibrium. In this sense, a plastic solid is a fluid. Granular rheology refers to the continuum mechanical description of granular materials. In this book, rheology--the study of the deformation and flow of matter--is treated primarily in the context of the stresses generated during the flow of complex materials such as polymers, colloids, foams, and gels. A rapidly growing and industrially important field, it plays a significant role in polymer processing, food processing, coating and printing, and many other manufacturing processes.
|Author||: Raphael M. Ottenbrite|
|Release Date||: 1987|
|ISBN 10||: 9783446148598|
|Pages||: 358 pages|
Multiphase Flow in Polymer Processing focuses on dispersed and stratified multiphase flow in polymer processing. This book explores the rheological behavior of multiphase (or multicomponent) polymeric systems as they are involved in various fabrication operations. It also outlines the importance of the morphological states of multiphase polymeric systems to explain the systems, rheological behavior in the fluid state, and mechanical behavior in the solid state. This monograph consists of eight chapters divided into two parts. After discussing dispersed and stratified multiphase flow in polymer processing, it introduces the reader to the fundamentals of rheology. The following chapters focus on the rheological behavior of particulate-filled polymeric systems and heterogeneous polymeric systems; the phenomenon of droplet breakup in dispersed flow; and gas-charged polymeric systems. The role of the discrete phase (that is, solid particles, liquid droplets, gas bubbles) in determining the bulk rheological properties of the multiphase system is highlighted, along with some representative polymer processing operations (namely, fiber spinning and injection molding) of the multiphase (or multicomponent) polymeric systems. Coextrusion in cylindrical, rectangular, and annular dies is also considered. The final chapter is devoted to the phenomenon of interfacial instability in coextrusion. This text will be a useful resource for chemists, chemical engineers, and those in the polymer processing industry.