Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download An Investigation Of The Rheology Of Reactive And Nonreactive Highly Filled Polymer Systems PDF full book. Access full book title An Investigation Of The Rheology Of Reactive And Nonreactive Highly Filled Polymer Systems.
| Author | : J. Andrew Walberer |
| Publisher | : |
| Total Pages | : 226 |
| Release | : 2000 |
| Genre | : |
| ISBN | : |
| Author | : A.V. Shenoy |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 484 |
| Release | : 2013-03-09 |
| Genre | : Science |
| ISBN | : 9401592136 |
Polymerie materials have been replacing other conventional materials like metals, glass and wood in a number of applications. The use of various types of fillers incorporated into the polymer has become quite common as a means of reducing cost and to impart certain desirable mechanieal, thermal, electrieal and magnetic properties to the polymers. Oue to the energy crisis and high priees of petrochemieals, there has been a greater demand to use more and more fillers to cheapen the polymerie materials while maintaining and/or improving their properties. The advantages that filled polymer systems have to offer are normally offset to some extent by the increased complexity in the rheological behavior that is introduced by the inclusion of the fillers. Usually when the use of fillers is considered, a compromise has to be made between the improved mechanieal properties in the solid state, the increased difficulty in melt processing, the problem of achieving uniform dispersion of the filler in the polymer matrix and the economics of the process due to the added step of compounding. It has been recognized that addition of filler to the polymer brings a change in processing behavior. The presence of the filler increases the melt viscosity leading to increases in the pressure drop across the die but gives rise to less die swell due to decreased melt elasticity.
| Author | : Y.G. Yanovsky |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 309 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 9401121168 |
The present book is devoted to a rapidly developing field of science which studies the behavior of viscoelastic materials under the influence of deformation~the rheology of polymers. Rheology has long been treated as the theoretical foundation of polymer processing, and from this standpoint it is difficult to overesti mate its importance in practice. Rheology plays an important role in developing our ideas on the nature of viscoelastic behavior in connection with the structural features of polymers and composites based on them. This expands the possibilities of employing rheological methods to characterize a variety of materials and greatly magnifies the interest in this field of research. The rheological properties of polymer systems are studied experimen tally, chiefly under conditions of shear and tensile strains. One explana tion is that many aspects of polymer material processing are associated with the stretching of melts or a combination of shear and tensile strains. In scientific investigations, either periodic or continuous conditions of shear deformation are employed. Each mode provides widespread infor mation. In periodic deformation, most attention is generally given to conditions with low deformation amplitudes that do not alter the structure of the polymer system during an experiment (the region of linear deformation conditions). Here the viscoelastic parameters are generally determined with respect to the frequency. Continuous deforma tion involves considerable strains, and may be attended by significant reversible and irreversible changes in the structure of a polymer.
| Author | : B.R. Gupta |
| Publisher | : CRC Press |
| Total Pages | : 463 |
| Release | : 2022-11-17 |
| Genre | : Technology & Engineering |
| ISBN | : 1000789799 |
This book covers a wide range of topics in polymer rheology. These are: Basic Principles, parameters, systems and applied mathematical models used in the rheological studies Melt flow analysis of different non-Newtonian fluids in laminar flow, transition between laminar and turbulent flow and modified Reynolds number The effects of different physical and molecular parameters on purely viscous rheological response of polymer melts and solutions Principles of rheometery and different types of viscometers and on-line rheometers The static and dynamic viscoelastic response of the polymer melts and solutions, viscoelasticity, mechanical models and Boltzmann superposition principle Molecular structure – viscoelasticity relationship and linear and non-linear viscoelasticity Effects of different processes, materials parameters like temperature, fillers (micro and nano-fillers) and molecular parameters like MW, MWD The role of rheology in polymer processing in different equipment Modified power law constants and two range power law constants for a large number of polymers, rheology software program in Java, comparison of different polymer rheological models using the rheology software and answers to the problems The book will be very useful to both undergraduate and postgraduate students, as well as teachers and practicing rheologists.
| Author | : Jose Luis Rivera Armenta |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 186 |
| Release | : 2018-10-03 |
| Genre | : Science |
| ISBN | : 1789840015 |
Rheology is the science that studies the behavior of the flow of matter in a liquid state or soft solids under the application of stress or deformation to obtain a response to an applied force. In polymers, rheology is an important tool to understand behavior under processing conditions and to design equipment. Another application for rheology in the polymer field is to understand structure-property relationships by means of molecular weight, molecular weight distribution, stereochemistry, morphology, melt degradation, and performance under processing. This book covers the essential criteria for selecting the best test types for various applications and new developments, for accurately interpreting results, and for determining other areas where rheology and rheological phenomena may be useful in your work.
| Author | : |
| Publisher | : |
| Total Pages | : 820 |
| Release | : 2001 |
| Genre | : Dissertations, Academic |
| ISBN | : |
| Author | : James William Goodwin |
| Publisher | : Royal Society of Chemistry |
| Total Pages | : 277 |
| Release | : 2008 |
| Genre | : Science |
| ISBN | : 0854048391 |
Rheology is primarily concerned with materials: scientific, engineering and everyday products whose mechanical behaviour cannot be described using classical theories. From biological to geological systems, the key to understanding the viscous and elastic behaviour firmly rests in the relationship between the interactions between atoms and molecules and how this controls the structure, and ultimately the physical and mechanical properties. Rheology for Chemists An Introduction takes the reader through the range of rheological ideas without the use of the complex mathematics. The book gives particular emphasis on the temporal behaviour and microstructural aspects of materials, and is detailed in scope of reference. An excellent introduction to the newer scientific areas of soft matter and complex fluid research, the second edition also refers to system dimension and the maturing of the instrumentation market. This book is a valuable resource for practitioners working in the field, and offers a comprehensive introduction for graduate and post graduates. Extracts from reviews of 1st Edition: "... well-suited for self-study by research workers and technologists, who, confronted with technical problems in this area, would like a straightforward introduction to the subject of rheology." Chemical Educator, "... full of valuable insights and up-to-date information." Chemistry World
| Author | : Maria Aranzazu Odriozola |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 1996 |
| Genre | : |
| ISBN | : |
| Author | : Younes El Omari |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2023 |
| Genre | : |
| ISBN | : |
The work of this thesis deals with the interfacial rheology in shear and in extension of polymeric systems. Initially, we chose to study model systems based on PIB poly (isobutylene) and PDMS poly (dimethylsiloxane). These polymers have the advantage of being liquid at room temperature. For this purpose, a cell for measuring interfacial properties has been developed in our laboratory. It allows to study the surface and interface properties at high temperatures up to 200 °C. Thus, we were able to study the interfacial properties according to the steady and oscillatory regime of these model systems by highlighting the influence of the molar mass and the temperature. These studies were then transposed to semi-crystalline molten polymers such as PEG poly (ethylene glycol) and PCL poly (caprolactone). In a second step, we studied and analyzed the interfacial elongational rheological properties of the model systems, by means of interfacial dilational rheology via the oscillating pendant drop method. In addition, the relaxation of surfaces / interfaces was studied by the "pulse" method and using the capillary breakup extensional rheometer (CaBER). The interfacial rheological quantities in elongation of model systems of different molar masses and under different temperatures were obtained. They were then compared with those measured in shear and analyzed according to the interfacial Trouton ratio. In the last part of the thesis, we have shown that the interfacial shear rheology allows to probe the chemical reaction at the interfaces of a polymeric melt system : PEgMA Poly (Ethylene Grafted Maleic Anhydride) / PDMS-(PropNH2)2, Poly (Dimethyl Siloxane Amino Propyl terminated). In addition, the study of the dynamic interfacial tension allowed the monitoring of the kinetics of the interfacial reaction of the reactive systems of different molar masses and at different temperatures. Finally, the studies of interfacial rheology are very relevant to probe in-situ the interfaces and/or interphases of molten polymer systems. The methodologies thus established and used are very innovative and overcome major scientific and technological barriers.
| Author | : B. R. Gupta |
| Publisher | : |
| Total Pages | : 334 |
| Release | : 2006-01-01 |
| Genre | : Rheology |
| ISBN | : 9788186299715 |
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
