Polymer Viscoelasticity Basics Molecular Theories And Experiments

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Polymer Viscoelasticity

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Author : Y.-H. Lin
language : en
Publisher: World Scientific
Release Date : 2003

Polymer Viscoelasticity written by Y.-H. Lin and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Technology & Engineering categories.

In this book, the studies of the Rouse, Doi?Edwards, and extended reptation theories are developed in a consistent manner from a basic level and discussed in detail. Viscoelastic properties of nearly monodisperse linear flexible polymers in both the entanglement and entanglement-free regions are analyzed quantitatively in terms of the molecular theories.

Polymer Viscoelasticity Basics Molecular Theories Experiments And Simulations 2nd Edition

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Author : Yn-hwang Lin
language : en
Publisher: World Scientific
Release Date : 2010-10-15

Polymer Viscoelasticity Basics Molecular Theories Experiments And Simulations 2nd Edition written by Yn-hwang Lin and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-10-15 with Science categories.

This book covers in great detail the Rouse-segment-based molecular theories in polymer viscoelasticity — the Rouse theory and the extended reptation theory (based on the framework of the Doi-Edwards theory) — that have been shown to explain experimental results in a consistently quantitative way. The explanation for the 3.4 power law of viscosity, quantitative line-shape analyses of viscoelastic responses and agreements between different sorts of viscoelastic responses, the consistency between the viscoelasticity and diffusion results, the clarification of the onset of entangelement, the discovery of the number of entanglement strands per cubed entanglement distance being a universal constant and the basic mechanism of the glass transition-related thermorheological complexity are discussed or shown in great detail. The mystery behind the success of the Rouse-segment-based molecular theories over the entropic region of a viscoelastic response is revealed by the Monte Carlo simulations on the Fraenkel chains. Specifically, the simulation studies give a natural explanation for the coexistence of the energy-driven and entropy-driven modes in a viscoelastic response and provide a theoretical basis resolving the paradox that the experimentally determined sizes of Rouse and Kuhn segments are nearly the same. This book starts from a very fundamental level; each chapter is built upon the contents of the previous chapters. Thus, the readers may use the book as a textbook and eventually reach an advanced research level. This book is also a useful source of reference for physicists, chemists and material scientists.

Introduction To Polymers Third Edition

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Author : Robert J. Young
language : en
Publisher: CRC Press
Release Date : 2011-06-27

Introduction To Polymers Third Edition written by Robert J. Young and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-27 with Technology & Engineering categories.

Thoroughly updated, Introduction to Polymers, Third Edition presents the science underpinning the synthesis, characterization and properties of polymers. The material has been completely reorganized and expanded to include important new topics and provide a coherent platform for teaching and learning the fundamental aspects of contemporary polymer science. New to the Third Edition Part I This first part covers newer developments in polymer synthesis, including ‘living’ radical polymerization, catalytic chain transfer and free-radical ring-opening polymerization, along with strategies for the synthesis of conducting polymers, dendrimers, hyperbranched polymers and block copolymers. Polymerization mechanisms have been made more explicit by showing electron movements. Part II In this part, the authors have added new topics on diffusion, solution behaviour of polyelectrolytes and field-flow fractionation methods. They also greatly expand coverage of spectroscopy, including UV visible, Raman, infrared, NMR and mass spectroscopy. In addition, the Flory–Huggins theory for polymer solutions and their phase separation is treated more rigorously. Part III A completely new, major topic in this section is multicomponent polymer systems. The book also incorporates new material on macromolecular dynamics and reptation, liquid crystalline polymers and thermal analysis. Many of the diagrams and micrographs have been updated to more clearly highlight features of polymer morphology. Part IV The last part of the book contains major new sections on polymer composites, such as nanocomposites, and electrical properties of polymers. Other new topics include effects of chain entanglements, swelling of elastomers, polymer fibres, impact behaviour and ductile fracture. Coverage of rubber-toughening of brittle plastics has also been revised and expanded. While this edition adds many new concepts, the philosophy of the book remains unchanged. Largely self-contained, the text fully derives most equations and cross-references topics between chapters where appropriate. Each chapter not only includes a list of further reading to help readers expand their knowledge of the subject but also provides problem sets to test understanding, particularly of numerical aspects.

Scanning Probe Microscopy In Nanoscience And Nanotechnology

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Author : Bharat Bhushan
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-01-22

Scanning Probe Microscopy In Nanoscience And Nanotechnology written by Bharat Bhushan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-22 with Technology & Engineering categories.

This book presents the physical and technical foundation of the state-of-the-art in applied scanning probe techniques. It constitutes a comprehensive overview of SPM applications. The chapters are written by leading researchers and application scientists.

Biodegradable Poly Hydroxyalkanoates

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Author : Qi Liao
language : en
Publisher: Stanford University
Release Date : 2010

Biodegradable Poly Hydroxyalkanoates written by Qi Liao and has been published by Stanford University this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

Plastic materials have a huge impact to the environment. EPA statistics shows that less than 7% of the plastic products are being recycled, and many of the rest are sent to landfills or, in worse scenarios, end up in our natural environment. Poly(hydroxyalkanoates) (PHAs), a family of biodegradable polyesters that can be produced by microbes fed on renewable carbon substrates, can be used as a "green" substitute to conventional plastics and help solve this environmental problem. However, difficulties remain for using PHAs at a sizable scale. Besides the high production cost, weaknesses in material properties, including narrow thermal processing window and insufficient melt elasticity, are also limiting the application of PHAs. Recent progress in PHA syntheses has resulted in new copolymers in the PHA family which are expected to possess improved properties. In this thesis, the melt properties of a series of one such copolymer, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (P3HB-co-3HHx), with varying 3HHx content, were investigated. Results suggested that the presence of the propyl side groups on 3HHx increases the steric hindrance of the P3HB-co-3HHx chains, thus resulting in increased entanglement density, and subsequently, the melt elasticity. Solid-state properties of P3HB-co-3HHx were also studied, and the effects on biodegradability of thin films of P3HB-co-3HHx were investigated. Results show that varying copolymer composition in combination with modifying the crystalline morphology through heat treatment may enable control over biodegradation rates for PHAs materials. In addition, biodegradable cellular foams made of PHAs were synthesized through extrusion foaming, a standard melt processing for thermoplastics. A commercial PHA copolymer, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (P3HB-co-3HV), was used and evaluated for its foamability. Another naturally-derived polymer, cellulose acetate butyrate (CAB), was chosen to blend with P3HB-co-3HV to enhance its melt properties and processability. It was found that blending significantly improved the thermal processing window and enhanced melt elasticity. Results showed that selectively combining two types of bio-based renewable polymer could be an effective way to tune the melt properties and crystallinity and thus the processability.

Hollow Fiber Membranes

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Author : Tai-Shung Chung
language : en
Publisher: Elsevier
Release Date : 2021-03-16

Hollow Fiber Membranes written by Tai-Shung Chung and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-16 with Technology & Engineering categories.

Hollow Fiber Membranes: Fabrication and Applications focuses on the fabrication and applications of hollow fiber membranes. The book amply discusses the fundamental theories and practical applications of hollow fiber membranes, covering membrane formation mechanisms, hollow fiber spinning techniques, and spinneret design and module fabrication. In addition, novel membrane processes and applications of hollow fiber membranes are introduced. - Elaborates membrane formation mechanisms - Illustrates novel hollow fiber fabrication techniques and processes - Specifies practical spinneret design and module fabrication - Reviews hollow fiber membranes spun from specialty polymers - Discusses state-of-the-art hollow fiber membrane applications

Introduction To Wood And Natural Fiber Composites

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Author : Douglas D. Stokke
language : en
Publisher: John Wiley & Sons
Release Date : 2013-10-21

Introduction To Wood And Natural Fiber Composites written by Douglas D. Stokke and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-21 with Science categories.

Over the past two decades, there has been a shift in research and industrial practice, and products traditionally manufactured primarily from wood are increasingly combined with other nonwood materials of either natural or synthetic origin. Wood and other plant-based fiber is routinely combined with adhesives, polymers, and other "ingredients" to produce composite materials. Introduction to Wood and Natural Fiber Composites draws together widely scattered information concerning fundamental concepts and technical applications, essential to the manufacture of wood and natural fiber composites. The topics addressed include basic information on the chemical and physical composition of wood and other lignocellulosic materials, the behavior of these materials under thermocompression processes, fundamentals of adhesion, specific adhesive systems used to manufacture composite materials, and an overview of the industrial technologies used to manufacture major product categories. The book concludes with a chapter on the burgeoning field of natural fiber-plastic composites. Introduction to Wood and Natural Fiber Composites is a valuable resource for upper-level undergraduate students and graduate students studying forest products and wood science, as well as for practicing professionals working in operational areas of wood- and natural-fiber processing. For more information on the Wiley Series in Renewable Resources, visit www.wiley.com/go/rrs Topics covered include: Overview of lignocellulosic material, their chemical and physical composition Consolidation behavior of wood and fiber in response to heat and pressure Fundamentals of adhesion Adhesives used to bond wood and lignocellulosic composites Manufacturing technology of major product types Fiber/plastic composites

Rubber Nanocomposites

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Author : Sabu Thomas
language : en
Publisher: John Wiley & Sons
Release Date : 2010-04-09

Rubber Nanocomposites written by Sabu Thomas and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-04-09 with Technology & Engineering categories.

Rubber Nanocomposites: Preparation, Properties and Applications focuses on the preparation, characterization and properties of natural and synthetic rubber nanocomposites. The book carefully debates the preparation of unmodified and modified nanofillers, various manufacturing techniques of rubber nanocomposites, structure, morphology and properties of nanocomposites. The text reviews the processing; characterization and properties of 0-, 1D and 2D nanofiller reinforced rubber nanocomposites. It examines the polymer/filler interaction, i.e., the compatibility between matrix and filler using unmodified and modified nanofillers. The book also examines the applications of rubber nanocomposites in various engineering fields, which include tyre engineering. The book also examines the current state of the art, challenges and applications in the field of rubber nanocomposites. The handpicked selection of topics and expert contributions make this survey of rubber nanocomposites an outstanding resource for anyone involved in the field of polymer materials design. A handy "one stop" reference resource for important research accomplishments in the area of rubber nanocomposites. Covers the various aspects of preparation, characterization, morphology, properties and applications of rubber nanocomposites. Summarizes many of the recent technical research accomplishments in the area of nanocomposites, in a comprehensive manner It covers an up to date record on the major findings and observations in the field

Proceedings Of The 5th China Aeronautical Science And Technology Conference

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Author : Chinese Aeronautical Society
language : en
Publisher: Springer Nature
Release Date : 2021-11-02

Proceedings Of The 5th China Aeronautical Science And Technology Conference written by Chinese Aeronautical Society and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-02 with Technology & Engineering categories.

To sort out the progress of aviation science and technology and industry, look forward to the future development trend, commend scientific and technological innovation achievements and talents, strengthen international cooperation, promote discipline exchanges, encourage scientific and technological innovation, and promote the development of aviation, the Chinese Aeronautical Society holds a China Aviation Science and Technology Conference every two years, which has been successfully held for four times and has become the highest level, largest scale, most influential and authoritative science and technology conference in the field of aviation in China. The 5th China Aviation Science and Technology Conference will be held in Wuzhen, Jiaxing City, Zhejiang Province in 2021, with the theme of "New Generation of Aviation Equipment and Technology", with academician Zhang Yanzhong as the chairman of the conference. This book contains original, peer-reviewed research papers from the conference. The topics covered include but are not limited to navigation, guidance and control technologies, key technologies for aircraft design and overall optimization, aviation test technologies, aviation airborne systems, electromechanical technologies, structural design, aerodynamics and flight mechanics, other related technologies, advanced aviation materials and manufacturing technologies, advanced aviation propulsion technologies, and civil aviation transportation. The papers presented here share the latest discoveries on aviation science and technology, making the book a valuable asset for researchers, engineers, and students.

Fundamentals Of Polymer Science

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Author : Michael M. Coleman
language : en
Publisher: Routledge
Release Date : 2019-01-25

Fundamentals Of Polymer Science written by Michael M. Coleman and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-25 with Technology & Engineering categories.

Now in its second edition, this widely used text provides a unique presentation of today's polymer science. It is both comprehensive and readable. The authors are leading educators in this field with extensive background in industrial and academic polymer research. The text starts with a description of the types of microstructures found in polymer