Amphiphilic Block Copolymers

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 ...

Amphiphilic Block Copolymers

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.

Block Copolymers II

Block Copolymers II


Block Copolymers II

68 70 70 73 75 2 Block Copolymer Micelles : General Features 2.1 Critical Micelle Concentration . ... 76 80 83 3 3.1 3.2 Micelles from Block Copolymers in Organic Solvents Micelles from Double - Hydrophobic Copolymers in Organic ...

Block Copolymers II

. A.J. M ller, V. Balsamo, M.L. Arnal: Nucleation and Crystallization in Diblock and Triblock Copolymers.- 2 J.-F. Gohy: Block Copolymer Micelles.- 3 M.A. Hillmyer: Nanoporous Materials from Block Copolymer Precursors.- 4 M. Li, C. Coenjarts, C.K. Ober: Patternable Block Copolymers.-

Block Copolymers I

Block Copolymers I


Block Copolymers

The oligomer - monomer approach can be used to prepare many block copolymers containing both addition - ring opening blocks and step - growth blocks . Important commercial examples are shown below . Ring Opening Oligomer - Step - Growth ...

Block Copolymers


Block Copolymers I

2 Linear Block Copolymers . . . Phase Diagrams of Various Block Copolymer Systems : Theory 2.2 Phase Diagrams of Various Block Copolymer Systems : Experimental Results ... 2.2.1 Poly ( ethyl ethylene ) -b - polyisoprene 2.2.2 ...

Block Copolymers I

1 N. Hadjichristidis, M. Pitsikalis, H. Iatrou: Synthesis of Block Copolymers.- 2 V. Abetz: Phase Behaviour and Morphologies of Block Copolymers.-

Block Copolymers

Comprised of seven chapters, this book begins with an overview of what block copolymers are, how they are made, and what they can and cannot be expected to do.

Block Copolymers

Block Copolymers: Overview and Critical Survey is a critical review of block copolymer technology and a comprehensive critical survey on the synthesis, characterization, properties, and applications of the specific block copolymer structures reported in the literature. The copolymers are organized according to segmental architecture and chemical composition. Comprised of seven chapters, this book begins with an overview of what block copolymers are, how they are made, and what they can and cannot be expected to do. The next chapter defines block copolymers and compares them with other types of polymer "hybrids," that is, polymer blends, random copolymers, and graft copolymers. The various segmental architectures that are possible with block copolymers are then described, followed by a discussion on the various synthesis techniques applicable to block copolymers; the characterization methods capable of elucidating block copolymer structures; some applications of commercially available block copolymers; and some future challenges for block copolymer technology. The last three chapters are devoted to A-B diblock copolymers, A-B-A triblock copolymers, and (A-B)n multiblock copolymers. This monograph should be useful to readers who want to become generally conversant with block copolymer technology and to those who need to delve more deeply into the subject.

Block Copolymers

Aldol group transfer polymerization, 65–66 Amorphous blocks, ABC star terpolymers with, morphology, 355–357 Amphiphilic block copolymers, linear diblock copolymers, 31–32, 36 Amphiphilic starblock copolymers, nonlinear block copolymers, ...

Block Copolymers

Polymers may be classified as either homopolymers, consisting ofone single repeating unit, or copolymers, consisting of two or moredistinct repeating units. Block copolymers contain long contiguousblocks of two or more repeating units in the same polymer chain.Covering one of the hottest topics in polymer chemistry, BlockCopolymers provides a coherent overview of the synthetic routes,physical properties, and applications of block copolymers. This pioneering text provides not only a guideline for developingsynthetic strategies for creating block copolymers with definedcharacteristics, but also a key to the relationship between thephysical properties of block copolymers and the structure anddynamics of materials. Covering features of the chemistry andphysics of block copolymers that are not found in comparable texts,Block Copolymers illustrates the structure-activity relationship ofblock copolymers and offers suggestions for the design of specificapplications. Divided into five sections–Block Copolymersincludes chapters on: Block Copolymers by Chemical Modification of PrecursorPolymers Nonlinear Block Copolymers Adsorption of Block Copolymers at Solid-Liquid Interfaces Theory of Block Copolymer Segregation Phase Transformation Kinetics Block Copolymer Morphology Block Copolymer Dynamics Polymer chemists, physicists, chemical engineers, and materialsscientists, as well as graduate students in polymer science, willfind Block Copolymers to be an invaluable text.

Block Copolymers

Chapter 2 introduces new aspects of the synthesis of block copolymers and new catalysts and the combination of blocks with a widely varying chemical structure . These include : the synthesis , characterization , and properties of ...

Block Copolymers

A summary of block copolymer chemical structures and synthesis. It discusses physical methods of characterization such as computer simulation, microhardness, dielectric spectroscopy, thermal mechanical relaxation, ultrasonic characterization, transmission electron microscopy, X-ray scattering, and NMR, among others. It also outlines rheological and processing parameters in the multiphase polymer systems with stable microstructures.

Block Copolymers in Solution

This book is concerned with the numerous aspects of the self-assembly of block copolymers in solution, and the diverse applications of this. Block copolymers in the melt, or in blends are not considered, and information on this can be ...

Block Copolymers in Solution

This unique text discusses the solution self-assembly of block copolymers and covers all aspects from basic physical chemistry to applications in soft nanotechnology. Recent advances have enabled the preparation of new materials with novel self-assembling structures, functionality and responsiveness and there have also been concomitant advances in theory and modelling. The present text covers the principles of self-assembly in both dilute and concentrated solution, for example micellization and mesophase formation, etc., in chapters 2 and 3 respectively. Chapter 4 covers polyelectrolyte block copolymers - these materials are attracting significant attention from researchers and a solid basis for understanding their physical chemistry is emerging, and this is discussed. The next chapter discusses adsorption of block copolymers from solution at liquid and solid interfaces. The concluding chapter presents a discussion of selected applications, focussing on several important new concepts. The book is aimed at researchers in polymer science as well as industrial scientists involved in the polymer and coatings industries. It will also be of interest to scientists working in soft matter self-assembly and self-organizing polymers.

Block Copolymers in Nanoscience

On these grounds, many examples of block copolymers derived by NMP (amphiphilic, hard/soft, etc.) have been provided in the literature. Hawker et al. [59] reviewed this field in 2001; other review articles are also available [65, 66].

Block Copolymers in Nanoscience

This first book to take a detailed look at one of the key focal points where nanotechnology and polymers meet provides both an introductory view for beginners as well as in-depth knowledge for specialists in the various research areas involved. It investigates all types of application for block copolymers: as tools for fabricating other nanomaterials, as structural components in hybrid materials and nanocomposites, and as functional materials. The multidisciplinary approach covers all stages from chemical synthesis and characterization, presenting applications from physics and chemistry to biology and medicine, such as micro- and nanolithography, membranes, optical labeling, drug delivery, as well as sensory and analytical uses.

Processing Structure and Properties of Block Copolymers

give an ABA triblock copolymer with a B block in the centre and an A block at each end. An especially convenient, and perhaps better controlled method, for the preparation of such triblock copolymers is by the use of the difunctional ...

Processing  Structure and Properties of Block Copolymers

Block copolymers represent an important class of multi-phase material, which have received very widespread attention, particularly since their successful commercial development in the mid-1960s. Much of the interest in these polymers has arisen because of their rather remarkable micro phase morphology and, hence, they have been the subject of extensive microstructural examination. In many respects, the quest for a comprehensive interpretation of their structure, both theoretically and experimentally, has not been generally matched by a corresponding enthusiasm for developing structure/property relationships in the context of their commercial application. Indeed, it has been left largely to the industrial companies involved in the development and utilization of these materials to fulfil this latter role. While it is generally disappointing that a much greater synergism does not exist between science and technology, it is especially sad in the case of block copolymers. Thus these materials offer an almost unique opportunity for the application of fundamental structural and property data to the interpretation of the properties of generally processed artefacts. Accordingly, in this book, the editor has drawn together an eminent group of research workers, with the specific intention of highlighting some of those aspects of the science and technology of block copolymers that are potentially important if further advances are to be made either in material formulation or utilization. For example, special consideration is given to the relationship between the flow properties of block copo lymers and their microstructure.

Self Organized Nanostructures of Amphiphilic Block Copolymers II

The ever-increasing number of publications on block copolymer-modified surfaces shows that such modifications impart ... The inherent ability of block copolymers to self-assemble into various wellordered supramolecular structures makes ...

Self Organized Nanostructures of Amphiphilic Block Copolymers II

Block Copolymer Surfactant Mixtures in Aqueous Solution: Can we Achieve Size and Shape Control by Co-Micellization?, by Thomas Hellweg; Non-ionic Thermoresponsive Polymers in Water, by Vladimir Aseyev, Heikki Tenhu and Françoise Winnik; From Coordination Polymers to Hierarchical Self-Assembled Structures, by Yun Yan, Arie de Keizer, Martien A. Cohen Stuart and Nicolaas A. M. Besseling; Processes of Ordered Structure Formation in Polypeptide Thin Film Solutions, by Ioan Botiz, Helmut Schlaad and Günter Reiter; Amphiphilic Polymers at Interfaces, by Katarzyna Kita-Tokarczyk, Mathias Junginger, Serena Belegrinou and Andreas Taubert;

Self Organized Nanostructures of Amphiphilic Block Copolymers I

block copolymer with a pH-sensitive block demonstrates under these conditions the conventional sequence of morphological transitions (see Sect. 10 ). The corresponding binodals are specified by (142). Figure 18a demonstrates the diagram ...

Self Organized Nanostructures of Amphiphilic Block Copolymers I

Conformations and Solution Properties of Star-Branched Polyelectrolytes, by Oleg V. Borisov, Ekaterina B. Zhulina, Frans A. M. Leermakers, Matthias Ballauff and Axel H. E. Müller; Self-Assembled Structures of Amphiphilic Ionic Block Copolymers: Theory, Self-Consistent Field Modeling and Experiment, by Oleg V. Borisov, Ekaternia B. Zhulina, Frans A. M. Leermakers and Axel H. E. Müller; Interpolyelectrolyte Complexes Based on Polyionic Species of Branched Topology, by Dmitry V. Pergushov, Oleg V. Borisov, Alexander B. Zezin and Axel H. E. Müller; Co-assembly of Charged Copolymers as a Novel Pathway Towards Reversible Janus Micelles, by Ilja K. Voets, Frans A. Leermakers, Arie de Keizer, Marat Charlaganov and Martien A. Cohen Stuart; Fluorescence Spectroscopy as a Tool for Investigating the Self-Organized Polyelectrolyte Systems, by Karel Procházka, Zuzana Limpouchová, Filip Uhlík, Peter Košovan, Pavel Matejícek, Miroslav Štepánek, Mariusz Uchman, Jitka Kuldová, Radek Šachl, Jana Humpolícková, and M. Hof

Interactions of an Antimicrobial Peptaibol with Amphiphilic Block Copolymers

Amphiphilic block copolymers In macromolecules even weak repulsions between monomers are magnified due to the large ... Block copolymers exhibit the features and properties of all individual blocks [Goodwin 2004, Hadjichristidis 2004].

Interactions of an Antimicrobial Peptaibol with Amphiphilic Block Copolymers


Developments in Block Copolymer Science and Technology

1.1 INTRODUCTION Block copolymers are useful in many applications where a number of different polymers are connected together to yield a material with hybrid properties. For example, thermoplastic elastomers are block copolymers ...

Developments in Block Copolymer Science and Technology

Focuses on recent advances in research on block copolymers, covering chemistry (synthesis), physics (phase behaviors, rheology, modeling), and applications (melts and solutions). Written by a team of internationally respected scientists from industry and academia, this text compiles and reviews the expanse of research that has taken place over the last five years into one accessible resource. Ian Hamley is the world-leading scientist in the field of block copolymer research Presents the recent advances in the area, covering chemistry, physics and applications. Provides a broad coverage from synthesis to fundamental physics through to applications Examines the potential of block copolymers in nanotechnology as self-assembling soft materials

Optical Metamaterials by Block Copolymer Self Assembly

This work is based on the combination of two distinct subjects: the self-assembly of block copolymers in thin films and optical metamaterials. In this chapter I will give a brief introduction of these two fields and of their recent ...

Optical Metamaterials by Block Copolymer Self Assembly

Metamaterials are artificially designed materials engineered to acquire their properties by their specific structure rather than their composition. They are considered a major scientific breakthrough and have attracted enormous attention over the past decade. The major challenge in obtaining an optical metamaterial active at visible frequencies is the fabrication of complex continuous metallic structures with nano metric features. This thesis presents the fabrication and characterization of optical metamaterials made by block copolymer self assembly. This approach allows fabrication of an intriguing and complex continuous 3D architecture called a gyroid, which is replicated into active plasmonic materials such as gold. The optical properties endowed by this particular gyroid geometry include reduction of plasma frequency, extraordinarily enhanced optical transmission, and a predicted negative refractive index. To date, this is the 3D optical metamaterial with the smallest features ever made.

Block Copolymer Nanocomposites

Thus the rod-coil block copolymers (RCBCs), which consist of a conjugated rod block and a soluble non-conjugated coil block, can be regarded as efficient materials to combine with CNTs for applications in electronic or electrochemical ...

Block Copolymer Nanocomposites

This book provides a comprehensive overview of the synthesis and characterization of nanocomposites based on block copolymers. Because of the self-assembly capability of block copolymers for the generation of nanostructures, besides their ability to nanostructure thermosetting matrices such as epoxy and polyester, binary or ternary nanocomposites can be prepared with different nanofillers such as nanoparticles and carbon nanotubes. The book starts with a review on nanocomposites based on block copolymers and nanoparticles synthesized with the use of surfactants, followed by a review on nanocomposites with metallic nanoparticles with polymer brushes and those with carbon nanotubes. A chapter is devoted to binary systems based on block copolymers and nanoparticles synthesized by sol-gel. A review on nanocomposites based on thermosetting matrices nanostructured with block copolymers (amphiphilic or chemically modified) is also presented for both epoxy and polyester resins. The work on ternary systems based on thermosetting matrices, block copolymers, and nanoparticles is presented next. The book concludes with a discussion on nanocomposites based on epoxy and block copolymers with azobenzene groups for optical purposes.

Blockcopolymers Polyelectrolytes Biodegradation

Academic interest arises, primarily, from the use of these materials as model copolymer systems where effects of ... The synthesis, characterization, and properties of classical linear block copolymers (AB diblocks, ABA triblocks, ...

Blockcopolymers  Polyelectrolytes  Biodegradation

-