Self Assembly Of Linear Dendritic Diblock Copolymers
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Self Assembly Of Linear Dendritic Diblock Copolymers
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Author : Mark Alan Johnson
language : en
Publisher:
Release Date : 2002
Self Assembly Of Linear Dendritic Diblock Copolymers written by Mark Alan Johnson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Linear-dendritic diblock copolymers combine the properties of dendritic macromolecules with the morphology of block copolymers, making it possible to create nanostructured materials which self assemble in the bulk state to form ordered thin films, and in solution to form highly functional micellar systems. The linear-dendritic system described here consists of 2000 molecular weight linear polyethylene oxide (PEO) with a polyamidoamine (PAMAM) dendron covalently bonded to one chain end. Specular neutron reflectivity has been used to investigate the structure of monolayers formed at an air-water interface. The dendritic end groups were functionalized with deuterated stearic acid to make the dendritic block hydrophobic, resulting in a macroamphiphile. Results indicate that stable monolayers are formed with PEO resting on the subphase and stearate groups extending into the air. Surface concentration and dendrimer generation were both found to impact monolayer formation.
Synthesis And Solution State Self Assembly Of Linear Dendritic Block Copolymers
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Author : Kristoffer Keith Stokes
language : en
Publisher:
Release Date : 2007
Synthesis And Solution State Self Assembly Of Linear Dendritic Block Copolymers written by Kristoffer Keith Stokes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Linear-dendritic block copolymers consisting of a poly(styrene) linear block and poly(amidoamine) dendrimer block were synthesized and examined for their ability to self-assemble in both aqueous environments and organic/aqueous mixtures. These polymers were shown to assemble into vesicle structures under a variety of conditions. Furthermore, size measurements of the dendritic portion were taken by means of Langmuir-Blodgett isotherms, demonstrating both the steric area, as well as the electrostatic area occupied by the dendrimer in a monolayer. Further studies into the rapid synthesis of such systems were also undertaken, with a particular interest in use of the so-called "click" reaction to be used as a facile means toward block copolymer synthesis.
The Synthesis And Assembly Of Linear Dendritic Rod Diblock Copolymers
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Author : Catherine Marie Bambenek Santini
language : en
Publisher:
Release Date : 2002
The Synthesis And Assembly Of Linear Dendritic Rod Diblock Copolymers written by Catherine Marie Bambenek Santini and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
(cont.) A fundamental change in the assembly behavior of the polymers was observed at generation 4.0 (eight end-groups). In solution, the hydrodynamic and viscometric radii were found to increase to a much greater extent than expected for the generation 4.0 and 4.5 polymers, consistent with a breakdown of the spherical approximation as the dendritic block extended into a rod-like shape. Similarly, at the air/water interface, the dendritic block of generation 4.0-alkyl terminated polymers all adopted a horizontal rod configuration, while the dendritic block of the lower generation polymers took on a random coil configuration, whose shape depended on the length of the terminal alkyl groups as well as the generation number of the dendritic block. Finally, in the bulk, direct observation of the generation 4.0-dodecyl terminated polymer with TEM indicated that the polymer was adopting a rod- or worm-like conformation, while the lower generation polymers only exhibited traditional diblock copolymer or polymer brush behavior.
Theory Of Block Polymer Self Assembly
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Author : Benjamin R. Magruder
language : en
Publisher: American Chemical Society
Release Date : 2024-03-13
Theory Of Block Polymer Self Assembly written by Benjamin R. Magruder and has been published by American Chemical Society this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-03-13 with Science categories.
This primer introduces the theory of self-assembly of block polymers, most notably self-consistent field theory (SCFT). Block polymer self-assembly is a fascinating and highly interdisciplinary topic. This primer can be read at several levels, depending on what readers want to get out of it. Readers who want an overview of self-assembly in block polymer and what SCFT says about the process can read Chapters 1-3 and skip to Chapter 7 to see the open questions. If the reader is further interested in the output of SCFT calculations but not how those outputs are generated, they should read Chapter 6 as well. But if the reader wants to learn how to do the SCFT calculations themselves, Chapters 4 and 5 offer an accessible introduction to the theory and numerical methods, providing an excellent entry point into the literature. This primer includes data that the authors have computed using SCFT. All calculations use the open-source software package Polymer Self-Consistent Field (PSCF), developed by David Morse at the University of Minnesota. Take breaks from reading to watch ten “Insider Q&A” videos included throughout, which offer additional insight from experts in the field, such as An-Chang Shi, Chinedum O. Osuji, Frank S. Bates, Christopher M. Bates, Glenn H. Fredrickson, and Lisa Hall. Furthermore, this primer includes multiple features to aid and enhance readers’ learning. “That’s a Wrap” summarizes key concepts at the end of each chapter, while “Read These Next” suggests references that may interest further reading. A pop-up glossary ensures readers have definitions as needed throughout the primer.
Amphiphilic Block Copolymers
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Author : P. Alexandridis
language : en
Publisher: Elsevier
Release Date : 2000-10-18
Amphiphilic Block Copolymers written by P. Alexandridis and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-10-18 with Science categories.
It is the belief of the editors of this book that the recognition of block copolymers as being amphiphilic molecules and sharing common features with other well-studied amphiphiles will prove beneficial to both the surfactant and the polymer communities. An aim of this book is to bridge the two communities and cross-fertilise the different fields. To this end, leading researchers in the field of amphiphilic block copolymer self-assembly, some having a background in surfactant chemistry, and others with polymer physics roots, have agreed to join forces and contribute to this book.The book consists of four entities. The first part discusses theoretical considerations behind the block copolymer self-assembly in solution and in the melt. The second part provides case studies of self-assembly in different classes of block copolymers (e.g., polyethers, polyelectrolytes) and in different environments (e.g., in water, in non-aqueous solvents, or in the absence of solvents). The third part presents experimental tools, ranging from static (e.g., small angle neutron scattering) to dynamic (e.g., rheology), which can prove valuable in the characterization of block copolymer self-assemblies. The fourth part offers a sampling of current applications of block copolymers in, e.g., formulations, pharmaceutics, and separations, applications which are based on the unique self-assembly properties of block copolymers.
Synthesis And Applications Of Copolymers
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Author : Anbanandam Parthiban
language : en
Publisher: John Wiley & Sons
Release Date : 2014-06-10
Synthesis And Applications Of Copolymers written by Anbanandam Parthiban 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 2014-06-10 with Technology & Engineering categories.
Understanding the reactivity of monomers is crucial in creating copolymers and determining the outcome of copolymerization. Covering the fundamental aspects of polymerization, Synthesis and Applications of Copolymers explores the reactivity of monomers and reaction conditions that ensure that the newly formed polymeric materials exhibit desired properties. Referencing a wide-range of disciplines, the book provides researchers, students, and scientists with the preparation of a diverse variety of copolymers and their recent developments, with a particular focus on copolymerization, crystallization, and techniques like nanoimprinting and micropatterning.
Directed Self Assembly Of Block Co Polymers For Nano Manufacturing
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Author : Roel Gronheid
language : en
Publisher: Woodhead Publishing
Release Date : 2015-07-17
Directed Self Assembly Of Block Co Polymers For Nano Manufacturing written by Roel Gronheid and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-07-17 with Technology & Engineering categories.
The directed self-assembly (DSA) method of patterning for microelectronics uses polymer phase-separation to generate features of less than 20nm, with the positions of self-assembling materials externally guided into the desired pattern. Directed self-assembly of Block Co-polymers for Nano-manufacturing reviews the design, production, applications and future developments needed to facilitate the widescale adoption of this promising technology. Beginning with a solid overview of the physics and chemistry of block copolymer (BCP) materials, Part 1 covers the synthesis of new materials and new processing methods for DSA. Part 2 then goes on to outline the key modelling and characterization principles of DSA, reviewing templates and patterning using topographical and chemically modified surfaces, line edge roughness and dimensional control, x-ray scattering for characterization, and nanoscale driven assembly. Finally, Part 3 discusses application areas and related issues for DSA in nano-manufacturing, including for basic logic circuit design, the inverse DSA problem, design decomposition and the modelling and analysis of large scale, template self-assembly manufacturing techniques. Authoritative outlining of theoretical principles and modeling techniques to give a thorough introdution to the topic Discusses a broad range of practical applications for directed self-assembly in nano-manufacturing Highlights the importance of this technology to both the present and future of nano-manufacturing by exploring its potential use in a range of fields
Liquid Crystalline Polymers
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Author : Vijay Kumar Thakur
language : en
Publisher: Springer
Release Date : 2015-11-16
Liquid Crystalline Polymers written by Vijay Kumar Thakur and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-16 with Technology & Engineering categories.
This book introduces anisotropic innovations in liquid crystalline polymers as well as new nanocomposite materials and testing techniques. The authors detail the newest discoveries of material properties, material types and phases, and material characterization. This interdisciplinary work creates valuable links that strengthen the approach to the evolving field of liquid crystalline polymers/ materials.
Click Polymerization
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Author : Anjun Qin
language : en
Publisher: Royal Society of Chemistry
Release Date : 2018-08-28
Click Polymerization written by Anjun Qin and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-28 with Science categories.
Click chemistry describes organic reactions which are highly efficient, regioselective and allow for mild reaction conditions. The archetypal click reaction of Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) is used in many diverse areas and has been extensively developed for polymer synthesis, leading to the term of click polymerization. This technique enables the preparation of functional polymers with linear and topological structures that have the potential to be used in optoelectronics and biological fields. Edited by world renowned experts, Click Polymerization is the first book to comprehensively summarize this approach to polymer synthesis consolidating all the different reaction types in one resource. From the basic knowledge through to the latest developments in synthesis, chapters include transition-metal catalysed and metal-free azide-alkyne click polymerizations as well as thiol-ene, thiol-yne and thiol-epoxy click polymerizations. The book provides an authoritative guide to click polymerization techniques for graduate students and researchers interested in polymer chemistry and materials science.
Polymer Self Assembly Adding Complexity To Mesostructures Of Diblock Copolymers By Specific Interactions
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Author : Helmut Schlaad
language : en
Publisher:
Release Date : 2003
Polymer Self Assembly Adding Complexity To Mesostructures Of Diblock Copolymers By Specific Interactions written by Helmut Schlaad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.