Synthesis And Characterization Of Various Macromolecular Architectures By Using Combined Controlled And Photoinitiated Polymerization Methods

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Synthesis and Characterization of Various Macromolecular Architectures by Using Combined Controlled and Photoinitiated Polymerization Methods

Author : Ali Ekrem Müftüoğlu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (85 download)

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Book Synopsis Synthesis and Characterization of Various Macromolecular Architectures by Using Combined Controlled and Photoinitiated Polymerization Methods by : Ali Ekrem Müftüoğlu

Download or read book Synthesis and Characterization of Various Macromolecular Architectures by Using Combined Controlled and Photoinitiated Polymerization Methods written by Ali Ekrem Müftüoğlu and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced polymeric materials with specialized properties are of great interest. Block and graft copolymers are the most demanded advanced materials since they display combined physical and mechanical properties. Because of their diverse macromolecular structures, they may possess novel characteristics required for many high-tech applications. Therefore, engineering macromolecular architectures is one of the major goals in polymer chemistry. Controlled polymerization methods appear to be the most powerful and versatile tools in achieving this goal. in the present work, macromolecular chains of various chemical compositions were ~ assembled in original topologies by combination of Atom Transfer Radical Polymerization (ATRP) or Ring-opening Polymerization (ROP) with photoinduced radical or radical promoted cationic polymerizations. These macromolecular architectures involve block, graft, block-graft, and brush type copolymers as well as miktoarm star copolymers and hyper-branched polymers... For this purpose, end-chain, mid-chain or side-chain mono- or bi- amino- or N;N- dimethylamino- functional precursor polymers were prepared either by A TRP or ROP. Subsequently, these prepolymers served as macromolecular co-initiators in photoinduced radical or promoted cationic polymerizations. For the preparation of diblock copolymers, N,N-dimethylaniline end-functional polystyrenes (PSt) with well-defined structures and low polydispersities were synthesized by A TRP of styrene in bulk at 11 O0C using 4-( dimethylamino )benzyl 4- (bromomethyl) benzoate as initiator in conjunction with a cuprous complex, Cu(I)Br/bipyridine. These polym'ers were further used in block copolymerization with methyl methacrylate (MMA) and cyclohexene oxide (CHO) via photoinduced radical and radical promoted cationic polymerization routes, respectively, as represented by (1) and (2). in the former case, macroradical generation was achieved with benzophenone sensitizer by photoexcitation followed by hydrogen abstraction from amino end groups. A visible light initiating system has been utilized in the radical promoted cationic polymerization of CHO. The system involves a xanthene dye (Erythrosin B) as the sensitizer, an aromatic N;N-dimethylamino group and diphenyl iodonium hexafluorophosphate as the radical source and radical oxidizer, respectively. While pure block copolymers were obtained in the free radical route, the free radical promoted cationic polymerization yielded both block and homopolymers...

Synthesis and Characterization of Reactive Intermediates Macromolecules by Controlled Polymerization and Coupling Processes

Author : Demet Göen Çolak
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (85 download)

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Book Synopsis Synthesis and Characterization of Reactive Intermediates Macromolecules by Controlled Polymerization and Coupling Processes by : Demet Göen Çolak

Download or read book Synthesis and Characterization of Reactive Intermediates Macromolecules by Controlled Polymerization and Coupling Processes written by Demet Göen Çolak and published by . This book was released on 2010 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study describes the synthesis and characterization of mid- and end-chain functional telechelics, macromonomers and their use in preparing soluble and processable comb-like conjugated polymers, such as poly(phenylene vinylene)s (PPVs). Well-defined polystyrene (PSt) or poly(-caprolactone) (PCL) based polymers containing mid- or end-chain dibromobenzene moieties were prepared by controlled polymerization methods, such as atom transfer radical polymerization (ATRP) or ring opening polymerization (ROP). The reaction of these polymers with amino- or aldehyde- functionalized monoboronic acids, in Suzuki type couplings, yielded the corresponding desired telechelics. Further functionalization was achieved by condensation reactions of these polymers with appropriate low molecular weight aldehydes or amines to form azomethine linkages. As a result, mid- or end-chain amino-, aldehyde-, pyrrolyl-, naphthyl- or hydroxy-functional telechelics were obtained. These telechelics may serve as useful macromonomers in the preparation of various macromolecular structures displaying distinct characteristics. PPV derivatives bearing well-defined PCL or PSt as lateral susbstituents were synthesized by following a Wittig polycondensation using dialdehyde functional telechelic macromonomers in combination with bis(triphenylphosphonium) salts in the presence of potassium tert- butoxide. The resulting colored PPVs are soluble in common organic solvents at room temperature just as the starting macromonomers. They emit blue and exhibit very high relative and absolute photoluminescence quantum yield. Thus, excellent solubility combined with the optical properties favours the use of these materials in the design of highly efficient light emitting-diodes (LEDs) and in many applications in various areas.

Synthesis and Characterization of New Macromolecular Architecture Using Living Titanium (IV) Initiators

Author : Susanne Marie Hoff
Publisher :
ISBN 13 :
Total Pages : 470 pages
Book Rating : 4.:/5 (34 download)

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Book Synopsis Synthesis and Characterization of New Macromolecular Architecture Using Living Titanium (IV) Initiators by : Susanne Marie Hoff

Download or read book Synthesis and Characterization of New Macromolecular Architecture Using Living Titanium (IV) Initiators written by Susanne Marie Hoff and published by . This book was released on 1997 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Self-Healing Polymers

Author : Wolfgang H. Binder
Publisher : John Wiley & Sons
ISBN 13 : 3527670203
Total Pages : 638 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Self-Healing Polymers by : Wolfgang H. Binder

Download or read book Self-Healing Polymers written by Wolfgang H. Binder and published by John Wiley & Sons. This book was released on 2013-03-29 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-healing is a well-known phenomenon in nature: a broken bone merges after some time and if skin is damaged, the wound will stop bleeding and heals again. This concept can be mimicked in order to create polymeric materials with the ability to regenerate after they have suffered degradation or wear. Already realized applications are used in aerospace engineering, and current research in this fascinating field shows how different self-healing mechanisms proven successful by nature can be adapted to produce even more versatile materials. The book combines the knowledge of an international panel of experts in the field and provides the reader with chemical and physical concepts for self-healing polymers, including aspects of biomimetic processes of healing in nature. It shows how to design self-healing polymers and explains the dynamics in these systems. Different self-healing concepts such as encapsulated systems and supramolecular systems are detailed. Chapters on analysis and friction detection in self-healing polymers and on applications round off the book.

Polymer Science: A Comprehensive Reference

Author :
Publisher : Newnes
ISBN 13 : 0080878628
Total Pages : 7752 pages
Book Rating : 4.0/5 (88 download)

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Book Synopsis Polymer Science: A Comprehensive Reference by :

Download or read book Polymer Science: A Comprehensive Reference written by and published by Newnes. This book was released on 2012-12-05 with total page 7752 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress in polymer science is revealed in the chapters of Polymer Science: A Comprehensive Reference, Ten Volume Set. In Volume 1, this is reflected in the improved understanding of the properties of polymers in solution, in bulk and in confined situations such as in thin films. Volume 2 addresses new characterization techniques, such as high resolution optical microscopy, scanning probe microscopy and other procedures for surface and interface characterization. Volume 3 presents the great progress achieved in precise synthetic polymerization techniques for vinyl monomers to control macromolecular architecture: the development of metallocene and post-metallocene catalysis for olefin polymerization, new ionic polymerization procedures, and atom transfer radical polymerization, nitroxide mediated polymerization, and reversible addition-fragmentation chain transfer systems as the most often used controlled/living radical polymerization methods. Volume 4 is devoted to kinetics, mechanisms and applications of ring opening polymerization of heterocyclic monomers and cycloolefins (ROMP), as well as to various less common polymerization techniques. Polycondensation and non-chain polymerizations, including dendrimer synthesis and various "click" procedures, are covered in Volume 5. Volume 6 focuses on several aspects of controlled macromolecular architectures and soft nano-objects including hybrids and bioconjugates. Many of the achievements would have not been possible without new characterization techniques like AFM that allowed direct imaging of single molecules and nano-objects with a precision available only recently. An entirely new aspect in polymer science is based on the combination of bottom-up methods such as polymer synthesis and molecularly programmed self-assembly with top-down structuring such as lithography and surface templating, as presented in Volume 7. It encompasses polymer and nanoparticle assembly in bulk and under confined conditions or influenced by an external field, including thin films, inorganic-organic hybrids, or nanofibers. Volume 8 expands these concepts focusing on applications in advanced technologies, e.g. in electronic industry and centers on combination with top down approach and functional properties like conductivity. Another type of functionality that is of rapidly increasing importance in polymer science is introduced in volume 9. It deals with various aspects of polymers in biology and medicine, including the response of living cells and tissue to the contact with biofunctional particles and surfaces. The last volume is devoted to the scope and potential provided by environmentally benign and green polymers, as well as energy-related polymers. They discuss new technologies needed for a sustainable economy in our world of limited resources. Provides broad and in-depth coverage of all aspects of polymer science from synthesis/polymerization, properties, and characterization methods and techniques to nanostructures, sustainability and energy, and biomedical uses of polymers Provides a definitive source for those entering or researching in this area by integrating the multidisciplinary aspects of the science into one unique, up-to-date reference work Electronic version has complete cross-referencing and multi-media components Volume editors are world experts in their field (including a Nobel Prize winner)

Macromolecular Syntheses

Author : Charles Gilbert Overberger
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Macromolecular Syntheses by : Charles Gilbert Overberger

Download or read book Macromolecular Syntheses written by Charles Gilbert Overberger and published by . This book was released on 2002 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date collection of presentations and posters given at a tutorial and workshop sponsored by the Polymer Division of the American Chemical Society. The material included encompasses recent research results, overviews of critical areas and short presentations in the form of posters and preprints. The book is targeted at established workers in the field of fluoropolymers as well as those wishing to develop a quick understanding of current knowledge and trends in this important field.

Copolymer Synthesis with Redox Polymerization and Free Radical Polymerization Systems

Author : Melahat Goktas
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

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Book Synopsis Copolymer Synthesis with Redox Polymerization and Free Radical Polymerization Systems by : Melahat Goktas

Download or read book Copolymer Synthesis with Redox Polymerization and Free Radical Polymerization Systems written by Melahat Goktas and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, block copolymer synthesis was evaluated by combining the redox polymerization technique and different polymerization techniques. By combining such different polymerization techniques, block copolymer synthesis has recently become an important part of polymer synthesis and polymer technology. The block/graft copolymers synthesized by combining such different techniques contribute greatly to macromolecular engineering. In today,Äôs polymer synthesis, copolymer synthesis is of great interest in polymer technologies especially by using controlled radical polymerization and different polymerization techniques together. The success achieved in copolymer synthesis by using different polymerization techniques such as ATRP-ROP, RAFT-ROP, and ATRP-RAFT on the same step or different steps was achieved by combining redox polymerization with moderate polymerization conditions and controlled radical polymerization techniques as well.

Novel Macromolecular Architectures via a Combination of Cyclodextrin Host/Guest Complexation and RAFT Polymerization

Author : Bernhard V. K. J. Schmidt
Publisher : Springer
ISBN 13 : 9783319359984
Total Pages : 0 pages
Book Rating : 4.3/5 (599 download)

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Book Synopsis Novel Macromolecular Architectures via a Combination of Cyclodextrin Host/Guest Complexation and RAFT Polymerization by : Bernhard V. K. J. Schmidt

Download or read book Novel Macromolecular Architectures via a Combination of Cyclodextrin Host/Guest Complexation and RAFT Polymerization written by Bernhard V. K. J. Schmidt and published by Springer. This book was released on 2016-09-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, Bernhard Schmidt describes his research into two fields in the chemical sciences: supramolecular and macromolecular chemistry. Schmidt first investigates cyclodextrins (CDs), which are well known for the formation of supramolecular host/guest complexes with hydrophobic molecules in aqueous solution. Schmidt then also examines reversible addition-fragmentation chain transfer (RAFT) polymerization as a well-suited toll for the synthesis of water-soluble end-functionalized polymers. The author skillfully combines both concepts as a powerful tool to access reversibly forming macromolecular architectures. The novel methods and architectures presented in this work are highly interesting from both a fundamental point of view as well as a basis for the design of efficient drug release systems. The work in this thesis has led to a number of publications in top peer-reviewed journals.

Novel Macromolecular Architectures Via a Combination of Cyclodextrin Host/Guest Complexation and Raft Polymerization

Author : Bernhard Volkmar Konrad Jakob Schmidt
Publisher :
ISBN 13 : 9783319060781
Total Pages : 228 pages
Book Rating : 4.0/5 (67 download)

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Book Synopsis Novel Macromolecular Architectures Via a Combination of Cyclodextrin Host/Guest Complexation and Raft Polymerization by : Bernhard Volkmar Konrad Jakob Schmidt

Download or read book Novel Macromolecular Architectures Via a Combination of Cyclodextrin Host/Guest Complexation and Raft Polymerization written by Bernhard Volkmar Konrad Jakob Schmidt and published by . This book was released on 2014-05-31 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Precision Synthesis of Complex Macromolecular Architectures of Gaseous Monomers and Their Property Studies

Author : Vignesh Vasu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (119 download)

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Book Synopsis Precision Synthesis of Complex Macromolecular Architectures of Gaseous Monomers and Their Property Studies by : Vignesh Vasu

Download or read book Precision Synthesis of Complex Macromolecular Architectures of Gaseous Monomers and Their Property Studies written by Vignesh Vasu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis work is split into five major chapters, viz. metal catalyzed polymerization of 1,3 butadiene, various protocols for synthesis of Poly(vinylidenefluoride) block copolymers, Copper (0) metal mediated iodine degenerative transfer controlled radical photo emulsion VDF homopolymerization, synthesis of 2,3,3,3 - tetrafluoropropene (TFP) homo, random and block copolymers, metal catalyzed interconversion of inactive perfluorohalides. Controlled radical polymerization of 1,3 butadiene was successfully achieved by using various group 8 and group 10 metal complexes such as the Fe,Ni, Run+1X3/(Nitrogen, Oxygen, Halide, Phosphine) ligand complexes. First instance of photo mediated polymerization of 1,3 butadiene were developed for Fe-complexes. A library of complex PVDF block copolymer architecture were synthesized by Mn2(CO)10 catalyzed quantitative activation of the PVDF-CF2-CH2-I and PVDF-CH2-CF2-I chain ends, and their properties were studied. Metal-free organo photocatalyst mediated controlled radical polymerization of the second block in PVDF block copolymers was achieved, and the kinetics of polymerization and chain end activation were studied in detail. Novel poly(TFP) homopolymer, random and block copolymer with VDF architectures were synthesized by Cu(0), Mtx(CO)y catalyzed radical polymerization. Rational selection of parameters such as the nature of the solvent, temperature, metal ligand complexes and various additives was evaluated to optimize the kinetic parameters for successful interconversion of RFCl, RFBr and RFI substrates.

Synthesis and Characterization of Novel Copolymers Using Monomer Sequence Controlled Living Anionic Polymerization

Author : Paul Philip Brooks
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Synthesis and Characterization of Novel Copolymers Using Monomer Sequence Controlled Living Anionic Polymerization by : Paul Philip Brooks

Download or read book Synthesis and Characterization of Novel Copolymers Using Monomer Sequence Controlled Living Anionic Polymerization written by Paul Philip Brooks and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Characterization of Novel Molecular Architectures

Author : Mukesh C. Bheda
Publisher :
ISBN 13 :
Total Pages : 578 pages
Book Rating : 4.:/5 (26 download)

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Book Synopsis Synthesis and Characterization of Novel Molecular Architectures by : Mukesh C. Bheda

Download or read book Synthesis and Characterization of Novel Molecular Architectures written by Mukesh C. Bheda and published by . This book was released on 1992 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Controlled Ring-opening Polymerization

Author : Maria Ryner
Publisher :
ISBN 13 : 9789172832534
Total Pages : 69 pages
Book Rating : 4.8/5 (325 download)

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Book Synopsis Controlled Ring-opening Polymerization by : Maria Ryner

Download or read book Controlled Ring-opening Polymerization written by Maria Ryner and published by . This book was released on 2002 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Characterization of Captodatively Stabilized Initators, Monomers and Polymers

Author : David Wayne Kurz
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.:/5 (296 download)

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Book Synopsis Synthesis and Characterization of Captodatively Stabilized Initators, Monomers and Polymers by : David Wayne Kurz

Download or read book Synthesis and Characterization of Captodatively Stabilized Initators, Monomers and Polymers written by David Wayne Kurz and published by . This book was released on 1991 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Alternating Copolymers

Author : J.M.G. Cowie
Publisher : Springer Science & Business Media
ISBN 13 : 1475791399
Total Pages : 292 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Alternating Copolymers by : J.M.G. Cowie

Download or read book Alternating Copolymers written by J.M.G. Cowie and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of the early literature attests to the fact that the study of copolymerization was initiated when polymer science was in its infancy. It has continued to grow to a subject of major importance and has been a source of interest to both academic and industrialist alike. The wide spectrum of structures and properties available in the statistical copolymer has made this a fruitful field of exploration, but one particular and more restricted form which has held its own fascination for many is the limiting case of the strictly alternating copolymer. This is formed, in the ideal situation, when two monomers in a reaction mixture add consecutively to create a polymer chain with a regular {ABABAB} structure, irrespective of the monomer feed ratio. When this happens the resulting copolymer will always have the same composition, a feature which can be advantageous but also somewhat restrictive, as the ability to vary the properties is then limited. Within a series entitled Speciality Polymers it seems appropriate then to deal with this subject, particularly as no previous attempt has been made to draw together the various facets of alternating copolymerization into one volume. It also seems timely to present a more unified picture of the subject which will also illustrate the progress made.

Biosynthetic Polymers for Medical Applications

Author : Laura Poole-Warren
Publisher : Elsevier
ISBN 13 : 1782421130
Total Pages : 360 pages
Book Rating : 4.7/5 (824 download)

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Book Synopsis Biosynthetic Polymers for Medical Applications by : Laura Poole-Warren

Download or read book Biosynthetic Polymers for Medical Applications written by Laura Poole-Warren and published by Elsevier. This book was released on 2015-11-23 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biosynthetic Polymers for Medical Applications provides the latest information on biopolymers, the polymers that have been produced from living organisms and are biodegradable in nature. These advanced materials are becoming increasingly important for medical applications due to their favorable properties, such as degradability and biocompatibility. This important book provides readers with a thorough review of the fundamentals of biosynthetic polymers and their applications. Part One covers the fundamentals of biosynthetic polymers for medical applications, while Part Two explores biosynthetic polymer coatings and surface modification. Subsequent sections discuss biosynthetic polymers for tissue engineering applications and how to conduct polymers for medical applications. Comprehensively covers all major medical applications of biosynthetic polymers Provides an overview of non-degradable and biodegradable biosynthetic polymers and their medical uses Presents a specific focus on coatings and surface modifications, biosynthetic hydrogels, particulate systems for gene and drug delivery, and conjugated conducting polymers

Single-Chain Polymer Nanoparticles

Author : José A. Pomposo
Publisher : John Wiley & Sons
ISBN 13 : 3527806393
Total Pages : 504 pages
Book Rating : 4.5/5 (278 download)

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Book Synopsis Single-Chain Polymer Nanoparticles by : José A. Pomposo

Download or read book Single-Chain Polymer Nanoparticles written by José A. Pomposo and published by John Wiley & Sons. This book was released on 2017-08-18 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.