Structure Formation Of A Single Polymer Chain

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Structure Formation Of A Single Polymer Chain

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Author : Susumu Fujiwara
language : en
Publisher:
Release Date : 2000

Structure Formation Of A Single Polymer Chain written by Susumu Fujiwara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

Molecular Dynamics Simulations Of Structural Formation Of A Single Polymer Chain

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Author : Susumu Fujiwara
language : en
Publisher:
Release Date : 1997

Molecular Dynamics Simulations Of Structural Formation Of A Single Polymer Chain written by Susumu Fujiwara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.

Single Chain Polymer Nanoparticles

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Author : José A. Pomposo
language : en
Publisher: John Wiley & Sons
Release Date : 2017-08-18

Single Chain Polymer Nanoparticles written by José A. Pomposo 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 2017-08-18 with Technology & Engineering categories.

This first book on this important and emerging topic presents an overview of the very latest results obtained in single-chain polymer nanoparticles obtained by folding synthetic single polymer chains, painting a complete picture from synthesis via characterization to everyday applications. The initial chapters describe the synthetics methods as well as the molecular simulation of these nanoparticles, while subsequent chapters discuss the analytical techniques that are applied to characterize them, including size and structural characterization as well as scattering techniques. The final chapters are then devoted to the practical applications in nanomedicine, sensing, catalysis and several other uses, concluding with a look at the future for such nanoparticles. Essential reading for polymer and materials scientists, materials engineers, biochemists as well as environmental chemists.

Structure Formation In Polymer Solutions

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Author :
language : en
Publisher:
Release Date : 1989

Structure Formation In Polymer Solutions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Polymers categories.

Structure Property Relationships In Polymers

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Author : Charles E. Carraher Jr.
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Structure Property Relationships In Polymers written by Charles E. Carraher Jr. 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 2012-12-06 with Science categories.

The first concern of scientists who are interested in synthetic polymers has always been, and still is: How are they synthesized? But right after this comes the question: What have I made, and for what is it good? This leads to the important topic of the structure-property relations to which this book is devoted. Polymers are very large and very complicated systems; their character ization has to begin with the chemical composition, configuration, and con formation of the individual molecule. The first chapter is devoted to this broad objective. The immediate physical consequences, discussed in the second chapter, form the basis for the physical nature of polymers: the supermolecular interactions and arrangements of the individual macromolecules. The third chapter deals with the important question: How are these chemical and physical structures experimentally determined? The existing methods for polymer characterization are enumerated and discussed in this chapter. The following chapters go into more detail. For most applications-textiles, films, molded or extruded objects of all kinds-the mechanical and the thermal behaviors of polymers are of pre ponderant importance, followed by optical and electric properties. Chapters 4 through 9 describe how such properties are rooted in and dependent on the chemical structure. More-detailed considerations are given to certain particularly important and critical properties such as the solubility and permeability of polymeric systems. Macromolecules are not always the final goal of the chemist-they may act as intermediates, reactants, or catalysts. This topic is presented in Chapters 10 and 11.

Structure Formation In Polymeric Fibers

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Author : David R. Salem
language : en
Publisher: Carl Hanser Verlag GmbH Co KG
Release Date : 2018-09-10

Structure Formation In Polymeric Fibers written by David R. Salem and has been published by Carl Hanser Verlag GmbH Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-10 with Technology & Engineering categories.

Structure Formation in Polymeric Fibers presents a comprehensive and critical review of the science of fiber formation, with special emphasis on the evolution of microstructure and its relationship to process conditions and molecular properties. The thorough discussion of the structure and properties of most types of polymeric fibers (rigid rod, flexible chain, polymer blends, and copolymers) and the different routes to fiber formation will provide the understanding necessary for solving product and process development problems, and for enhancing productivity and product performance. The book will be a primary resource for all scientists and engineers involved in the research and practice of fiber formation and to students taking courses in polymer physics, polymer engineering, fiber science, and chemical engineering. It should also be of value to those interested in the general phenomena of polymer deformation, orientation, and structure development. Contents · Variations on a Theme of Uniaxial Orientation · Structure Formation During Melt Spinning · Advances in the Control of Spinline Dynamics for Enhanced Properties · Structure Formation During Drawing of Flexible Chain Polymers · Basic Aspects of Solution(Gel)-Spinning and Ultra-Drawing of PE-UHMW · Electrospinning and the Formation of Nanofibers · Fibers from Liquid Crystalline Polymers · Solvent Spun Cellulose Fibers · Carbon Fibers · Fibers from Electrically Conductive Polymers · Fibers from Polymer Blends and Copolymers · Thermomechanical Processing: Structure and Properties · Microstructure Characterization · Fiber Formation and the Science of Complexity

Kinetics Of Polymer Chain Collapse In Dilute Solution

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Author : Zhengnan Yang
language : en
Publisher:
Release Date : 2017

Kinetics Of Polymer Chain Collapse In Dilute Solution written by Zhengnan Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Polymers categories.

Phase transition of polymer molecules in solution, one of the most important topics in polymer and biomolecular physics, is dominated by the net interactions between polymer and solvents. By controlling the thermodynamic and kinetic processes of polymer solution phase separation with temperature-shifting or solvent-shifting, different morphologies of the separated polymer phase from solution can be obtained, with applications including polymer nanoparticle fabrication, polymer crystallization and protein folding. Polymer nanoparticles of high purity, controlled size and narrow size distribution are desired for biomedical applications. One of the promising methods to produce nanoparticles is the solvent-shifting process, in which a non-solvent is added to a pre-synthesized polymer in solution to precipitate polymer nanoparticles. The mechanism of the formation of these polymer nanoparticles is not well understood, particularly the initial nucleation process in which the polymer chain undergoes comprehensive molecular conformation changes. In this project, we study the coil-to-globule transition induced by adding water (non-solvent) into Poly(methyl methacrylate) (PMMA) solution in Tetrahy-drofuran (good solvent). Formation of polymer multi-chain clusters and the coil-to-globule transition of these clusters are observed. An intermediate state of multi-chain clusters is observed during the transition with lifetimes of days to months, depending on the concentration of non-solvent (water). The collapsed multi-chain clusters are stable in the solution after the transition with no further growth in time. This aggregation and collapse transition of polymer chains is compared to the traditional polymer single chain two-step coil-to-globule transition in dilute solution induced by temperature-shifting, during which a sausage-shaped intermediate state has been observed with lifetimes of minutes to hours. The formation of stable multi-chain clusters in solution is discussed and compared to a well-known surfactant free microemulsion (SFME) system in small molecule ternary systems. The formation of small molecular nm-size droplets internary systems is explained using two competing mechanisms. Entropy change favors smaller size clusters and, as the clusters get smaller, while the average distance between particles shrink and leading to an opposing hydration force. In the formation of multi-chain cluster, no such hydration force existence with the distance of hundreds of nanometers between clusters. One possible mechanism is that the competition between interfacial energy and entropic term gives a specific PMMA globule radius. In order to understand the real interfacial energy at the interface between PMMA phase and the co-solvent phase, detailed structure at the interface is investigated using Sum Frequency Generation technique. A condensation of ordered THF molecules at the interface was observed. Further measurement of the interfacial energy and investigation of real structure at the interface are necessary to explain the formation of stable multi-chain clusters with specific size. An understanding of the nanoparticle formation process leads to the design of a continuous membrane-based process to produce pure PMMA nanoparticles with controlled size and narrow size distribution. The size of these nanoparticles varies with the concentration of the PMMA feed and the amount of water diffusing across the membrane. The size distribution of PMMA particles produced in acontinuous flow membrane cell is much narrower than those produced by drop-wisewater addition or batch dialysis precipitation of PMMA particles. A continuous production of polymer nanoparticles of high purity and narrow dize distribution is important for biomedical applications such as delivering therapeutics.

From Single Molecules To Nanoscopically Structured Materials

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Author : Thomas Basché
language : en
Publisher: Springer
Release Date : 2014-06-03

From Single Molecules To Nanoscopically Structured Materials written by Thomas Basché and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-03 with Technology & Engineering categories.

Mechanical Properties of Single Molecules and Polymer Aggregates Rüdiger Berger, Kurt Binder, Gregor Diezemann, Jürgen Gauß, Mark Helm, Katharina Landfester, Wolfgang Paul (Halle), Peter Virnau. Optical Properties of Individual Molecular Aggregates and Nano Particles Thomas Basché, Hans-Jürgen Butt, Gregor Diezemann, Jürgen Gauß, Klaus Müllen, Harald Paulsen, Carsten Sönnichsen, Rudolf Zentel. Structure Formation of Polymeric Building Blocks I: Self-assembly of Copolymers Kurt Binder, Holger Frey, Andreas Kilbinger (Univ. Fribourg), Ute Kolb, Michael Maskos (IMM Mainz), Wolfgang Paul (Univ. Halle), Hans Wolfgang Spiess. Structure Formation of Polymeric Building Blocks II: Complex Polymer Architectures Kurt Binder, Hans Jürgen Butt, Angelika Kühnle, Klaus Müllen, Wolfgang Paul (Univ. Halle), Erwin Schmidt, Manfred Schmidt, Hans Wolfgang Spiess, Thomas Vilgis. Structure Formation of Polymeric Building Blocks III: Polymer Complexes in Biological Applications Kurt Kremer, Heiko Luhmann, Christine Peter, Friederike Schmid, Erwin Schmidt, Manfred Schmidt, Eva Sinner (Univ. of Natural Resources, Vienna), Tanja Weil (Univ. Ulm).

Structure Formation In Polymeric Fibers

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Author : David R. Salem
language : en
Publisher: Hanser Gardner Publications
Release Date : 2001

Structure Formation In Polymeric Fibers written by David R. Salem and has been published by Hanser Gardner Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Science categories.

This book presents a comprehensive and critical review of the science of fiber formation, with special emphasis on the evolution of microstructure and its relationship to process conditions and molecular properties. The thorough discussion of the structure and properties of most types of polymeric fibers (rigid rod, flexible chain, polymer blends, and copolymers) and the different routes to fiber formation will provide the understanding necessary for solving product and process development problems, and for enhancing productivity and product performance. The book is a primary resource for all scientists and engineers involved in the research and practice of fiber formation and to students taking courses in polymer physics, polymer engineering, fiber science, and chemical engineering. It should also be of value to those interested in the general phenomena of polymer deformation, orientation, and structure development.

Single Chain Polymer Nanoparticles

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Author : José A. Pomposo
language : en
Publisher: John Wiley & Sons
Release Date : 2017-12-04

Single Chain Polymer Nanoparticles written by José A. Pomposo 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 2017-12-04 with Technology & Engineering categories.

This first book on this important and emerging topic presents an overview of the very latest results obtained in single-chain polymer nanoparticles obtained by folding synthetic single polymer chains, painting a complete picture from synthesis via characterization to everyday applications. The initial chapters describe the synthetics methods as well as the molecular simulation of these nanoparticles, while subsequent chapters discuss the analytical techniques that are applied to characterize them, including size and structural characterization as well as scattering techniques. The final chapters are then devoted to the practical applications in nanomedicine, sensing, catalysis and several other uses, concluding with a look at the future for such nanoparticles. Essential reading for polymer and materials scientists, materials engineers, biochemists as well as environmental chemists.