Author: J. Lyngaae-JørgensenPublisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
Phase Transitions During Shear Flow of Two-phase Polymer Blends. - 2: SAN
Author: J. Lyngaae-JørgensenPhase Transitions During Shear Flow of Two-phase Polymer Blends. - 1: Theory
Author: J. Lyngaae-JørgensenRheo-Physics of Multiphase Polymer Systems
Author: Kai SondergaardPublisher: CRC Press
ISBN: 9781566761567
Category : Technology & Engineering
Languages : en
Pages : 604
Book Description
FROM THE PREFACE Almost all polymeric systems are subjected to a flow field at least once along the route between preparation and application. . . . There is also an increased interest in predictive models on phase behavior and suitable techniques for characterizing the structure of these systems when subjected to flow. Multiphase polymeric systems are particularly susceptible to flow, which may cause orientation of species, morphological changes, and phase transitions. All these events may, in turn, affect the end product properties, such as permeability, electrical conductivity, [and] mechanical properties. In processing, escalating needs have evolved for optimization and development of novel and more uniform product properties and increased productivity. In order to arrive at an understanding of processing polymeric systems under elastic flow conditions, it is convenient to analyze the basic physical mechanisms under conditions that enable development of predictive models in conjunction with controlled experimentation. . . . In recent years, the science of rheo-physics has evolved and now involves both advanced theories and experimental techniques. Rheo-physics means the rheological, morphological, and thermodynamic behavior of structured polymer systems during flow. . . . In this monograph, the rheo-optical techniques are . . . emphasized. The book gives an introduction to rheo-physics, including fundamentals of theories, and a representative selection of applications of rheo-optical techniques for analyzing multiphase systems. The chapters contain both practical advice for the new experimenter . . . as well as review material for the experienced scientist.
Polymer Blends and Alloys
Author: M.J. FolkesPublisher: Springer Science & Business Media
ISBN: 9401121621
Category : Technology & Engineering
Languages : en
Pages : 270
Book Description
P. S. HOPE and M. J. FOLKES Mixing two or more polymers together to produce blends or alloys is a well-established strategy for achieving a specified portfolio of physical proper ties, without the need to synthesise specialised polymer systems. The subject is vast and has been the focus of much work, both theoretical and experimental. Much ofthe earlier work in this field was necessarily empirical and many ofthe blends produced were of academic rather than commercial interest. The manner in which two (or more) polymers are compounded together is of vital importance in controlling the properties of blends. Moreover, particular ly through detailed rheological studies, it is becoming apparent that process ing can provide a wide range of blend microstructures. In an extreme, this is exemplified by the in situ formation of fibres resulting from the imposition of predetermined flow fields on blends, when in the solution or melt state. The microstructures produced in this case transform the blend into a true fibre composite; this parallels earlier work on the deformation of metal alloys. This type of processing-structure-property correlation opens up many new possi bilities for innovative applications; for example, the production of stiff fibre composites and blends having anisotropic transport properties, such as novel membranes. This book serves a dual purpose.
Encyclopedia of Polymer Blends, Volume 2
Author: Avraam I. IsayevPublisher: John Wiley & Sons
ISBN: 3527805222
Category : Science
Languages : en
Pages : 422
Book Description
A complete and timely overview of the topic, this volume imparts knowledge of fundamental principles and their applications for academicians, scientists and researchers, while informing engineers, industrialists and entrepreneurs of the current state of the technology and its utilization. Each article is uniformly structured for easy navigation, containing the latest research & development and its basic principles and applications, examples of case studies, laboratory and pilot plant experiments, as well as due reference to the published and patented literature.
Polymer Rheology and Processing
Author: A.A. CollyerPublisher: Springer Science & Business Media
ISBN: 9781851665570
Category : Technology & Engineering
Languages : en
Pages : 494
Book Description
Phase Transitions in Polymers: The Role of Metastable States
Author: Stephen Z.D. ChengPublisher: Elsevier
ISBN: 0080558208
Category : Science
Languages : en
Pages : 325
Book Description
A classical metastable state possesses a local free energy minimum at infinite sizes, but not a global one. This concept is phase size independent. We have studied a number of experimental results and proposed a new concept that there exists a wide range of metastable states in polymers on different length scales where their metastability is critically determined by the phase size and dimensionality. Metastable states are also observed in phase transformations that are kinetically impeded on the pathway to thermodynamic equilibrium. This was illustrated in structural and morphological investigations of crystallization and mesophase transitions, liquid-liquid phase separation, vitrification and gel formation, as well as combinations of these transformation processes. The phase behaviours in polymers are thus dominated by interlinks of metastable states on different length scales. This concept successfully explains many experimental observations and provides a new way to connect different aspects of polymer physics.* Written by a leading scholar and industry expert* Presents new and cutting edge material encouraging innovation and future research* Connects hot topics and leading research in one concise volume
The Phase Structure and Phase Behavior of Polymer Blends Undergoing Simple Shear Flow
Author: Zheng ChenThe 1997 Jubilee Research Event
Author: Publisher:
ISBN:
Category : Biochemical engineering
Languages : en
Pages : 692
Book Description
This showpiece of IChemE's 75th anniversary celebrations allows young researchers to show their work to a critical international audience.
Author: