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Author : Yuan Zhang
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (852 download)
Download or read book Synthesis and End Group Functionalization of Methacrylate Polymers written by Yuan Zhang and published by . This book was released on 2013 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michelle H. Wrue
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (66 download)
Download or read book Synthesis and Phase Behavior of End-functionalized Associating Polymers written by Michelle H. Wrue and published by . This book was released on 2010 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We have explored polymer blend phase behavior in the presence of multiple hydrogen bonding end-groups. This work details the synthesis of functionalized polymers and their subsequent use in miscibility studies. The synthesis of end-functionalized hydrogen bonding polymers and the investigation of their physical properties and miscibility is presented. Mono-functional and telechelic ureidopyrimidinone (UPy) functionalized polymers were prepared by two main routes: post-polymerization functionalization (of commercially available or synthesized polymers); and polymerization of monomers using a functionalized initiator. UPy-functionalized polymers were prepared with a variety of polymer backbones including poly(ethylene oxide)s; poly(butadiene)s, poly(dimethyl siloxanxe)s; poly(styrene)s and poly(methyl methacrylate)s. The most successful route to polymers with UPy end-groups was atom transfer radical polymerization (ATRP) using a UPy-functionalized initiator, followed by atom transfer radical coupling (ATRC). The incorporation of ureidopyrimidinone end-groups was shown to affect the physical properties of the polymer backbone. Parent polymers that were liquids became viscous liquids or waxy solids upon UPy-functionalization of chain end. UPy-functionalization of a hydroxyl-terminated polybutadiene (HO-PB-OH) resulted in a waxy solid while the HO-PB-OH precursor was a viscous liquid. The thermal properties of functionalized polymers also differed from those of the unfunctionalized parent polymers. Hot-stage optical microscopy revealed that UPy-functionalized PEO displayed a depressed melting point relative to the analogous unfunctionalized precursor. Differential scanning calorimetry was also used to investigate the synthesized UPy-polymers. UPy-functionalized polystyrenes and poly(methyl methacrylate)s showed an increased Tg compared to the equivalent homopolymer standards. This increased Tg was determined to be dependent upon the fraction of UPy groups present and chemical cleavage of the end-groups resulted in Tgs near those observed for polymer standards of comparable molecular weight. Aggregation of UPy end-groups in solution was observed using gel permeation chromatography. Aggregation was only observed for telechelic samples of low molecular weight, indicating that the aggregation of end-groups is dependent upon the concentration of the end-groups. The effect of UPy end-groups on blend miscibility was studied in solution using laser light scattering and in the melt state was using laser light scattering, optical microscopy and differential scanning calorimetry. The incorporation of associating groups onto one end of either blend component decreases miscibility relative to the unfunctionalized parent blends. Lower miscibility was also observed for blends in which both components were mono-functionalized with associating end-groups. The largest decrease in miscibility was observed for blends containing telechelic UPy-functionalized polymers, which were immiscible across the entire composition range"--leaves v-vi.
Author : Joseph Jagur-Grodzinski
Publisher : Nova Publishers
ISBN 13 : 9781594543302
Total Pages : 398 pages
Book Rating : 4.5/5 (433 download)
Download or read book Living and Controlled Polymerization written by Joseph Jagur-Grodzinski and published by Nova Publishers. This book was released on 2006 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The living/controlled polymerisation techniques opened new vistas in polymer chemistry. The leading authorities in this field and its pioneers contributed chapters to this collective volume. The controlled polymerisation techniques have enabled preparation of polymers, copolymers, and block copolymers with predetermined molecular weights and narrow polydispersity, in which functional groups or biologically active molecules could be placed at well defined locations. They have also enabled preparation of advanced polymeric structures with precisely determined architectures and improved properties. Moreover, they have provided opportunities for preparation of novel polymeric materials from monomers, which before have not been suitable or accessible for such purposes. Properties of some of these polymeric materials may be significantly different from those of the existing ones. They provide opportunities for new applications. Several patents have already been approved for such speciality applications as, drug delivery, biocompatible surfaces, thermoplastic elastomers, moisture curable sealants, and so on. Many more products, based on polymers fabricated by the living/ controlled polymerisation techniques, will certainly emerge in such specialised areas as, nanotechnology, medical devices, "smart polymers", sensors , smart separation technologies, optical fibres and other optical applications, various biomaterials, etc.
Author : Chenying Zhao
Publisher :
ISBN 13 :
Total Pages : 71 pages
Book Rating : 4.:/5 (126 download)
Download or read book Synthesis and Functionalization of Hyperbranched Poly(methyl Methacrylate) written by Chenying Zhao and published by . This book was released on 2019 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hyperbranched polymers have unique physical and chemical properties that make them interesting to people in both academia and industry. One way to make hyperbranched polymers is to use self-condensing vinyl polymerization (SCVP). Hyperbranched polymethacrylates can be prepared from methacrylate inimers (inimers are monomers that contain both initiation and polymerizable groups) by atom transfer radical polymerization (ATRP) and self-condensing vinyl polymerization (SCVP). The methyl methacrylate inimer was synthesized by reacting the carboxylic acid group of 2-bromo-3-hydroxy-2- methylpropionic acid with methacrylic acid and esterifying the alcohol group with methanol.4 This methyl methacrylate inimer was then polymerized under atom transfer radical polymerization conditions. Post-polymerization functionalization is often used to change and/or improve the properties of polymers. For hyperbranched polymers made by atom transfer radical polymerization, the halogen atoms (chlorine or bromine) remaining in the polymer backbone provide sites for post-polymerization functionalization. The halogen atoms in polymethacrylates are bonded to tertiary carbons, which are more hindered and less electrophilic than the halogen sites in hyperbranched polyacrylates, but are presumably more susceptible to cationic rearrangement. The hyperbranched poly(methyl methacrylate) is rearrangeable with heating and to give a primary bromine.
Author : Arun Kumar Nandi
Publisher : Royal Society of Chemistry
ISBN 13 : 1788019687
Total Pages : 457 pages
Book Rating : 4.7/5 (88 download)
Download or read book Polymer Functionalized Graphene written by Arun Kumar Nandi and published by Royal Society of Chemistry. This book was released on 2021-06-18 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is an immense variety of research on polymer functionalized graphene (PFG). Functionalization of graphene is necessary for improvement of the compatibility with polymers. Applications of these graphene polymer hybrids include in chemical and biological sensing, photovoltaic devices, supercapacitors and batteries, dielectric materials and drug/gene delivery vehicles. This book will shed light on the synthesis, properties and applications of these new materials, covering two methods (covalent and noncovalent) for producing polymer functionalized graphene. Chapters cover physical, optical, mechanical and electronic properties, applications of polymer functionalized graphene in energy harvesting and storage, and uses in biomedicine and bioengineering. Written by an expert in the field, Polymer Functionalized Graphene will be of interest to graduate students and researchers in polymer chemistry and nanoscience.
Author : Jeffrey Jacob Cernohous
Publisher :
ISBN 13 :
Total Pages : 458 pages
Book Rating : 4.:/5 (319 download)
Download or read book Synthesis and Intermacromolecular Reactions of Functional Polymers written by Jeffrey Jacob Cernohous and published by . This book was released on 1997 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew B Lowe
Publisher : Royal Society of Chemistry
ISBN 13 : 1849736960
Total Pages : 337 pages
Book Rating : 4.8/5 (497 download)
Download or read book Thiol-X Chemistries in Polymer and Materials Science written by Andrew B Lowe and published by Royal Society of Chemistry. This book was released on 2013-08-13 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thiol-X chemistries are already well established techniques, but it is only recently that they have been exploited for the functionalization and synthesis of polymers and other materials. As such, information on these techniques is scattered across the literature and Thiol-X Chemistries in Polymer and Materials Science is the first book to compile work specifically focussing on the application of thiol-based chemistries in materials design and synthesis. The book introduces the various thiol-X chemistries currently available and applications where they have been successfully used, including examples of 'click' processes, in polymerizations, polymer synthesis, and polymer modification. Short 'how to' sections within the chapters also provide general experimental techniques to employ the various chemistries described. Written by leading experts in the field, this book is a comprehensive resource for postgraduates, academics and industrial practitioners interested in polymer and materials applications.
Author : Hoon Kim
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (155 download)
Download or read book End-group Functionalization of Anionically Synthesized Polymers Via Hydrosilation Reactions written by Hoon Kim and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One of the unique features of living, alkyllithium-initiated, anionic polymerization is the ability to produce a stable carbanionic chain end after complete monomer consumption, which can be followed by reaction with electrophiles to form various end-functionalized polymers. Although a variety of functional polymers have been synthesized in the last few decades, each specific functionalization has had to be designed and optimized individually. Consequently, the development of general functionalization methodologies has drawn recent interest. However, even these general functionalization methods require the use of protecting groups, and the complexity in synthetic routes and the thermal/moisture instability of many protected functional agents have restricted their practical application. This thesis describes a new, general functionalization methodology, combining well-defined, living anionic polymerization with efficient and highly selective, platinum-catalyzed hydrosilation reactions with functionalized alkenes ..."--Iii
Author : Michael Olechnowicz
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (294 download)
Download or read book Synthesis of End-chain and In-chain Functionalized Polymers by Anionic Polymerization written by Michael Olechnowicz and published by . This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The synthesis of homopolymers and block copolymers containing metal coordinating ligands is an important area of research due to the potential applications of these polymers in the fields of optics, electronics, and photonics. Specifically, the terpyridine group is very useful, since it can act as a tridentate chelating ligand due to its strategically positioned, three nitrogen atoms. This allows it to form strong complexes with a variety of transition metal ions. The hydroxyl functionality is another important group due to numerous applications of well-defined hydroxyl-functionalized polymers. They can react with other functional groups on other polymers for chain extension, branching, or crosslinking. They can also be used as macroinitiators for the polymerization of other monomers such as lactide and lactone. Alkyllithium-initiated, living anionic polymerization offers excellent control over molecular weight and molecular weight distribution. The absence of termination and chain transfer steps makes these systems ideally suited for the preparation of chain-end functionalized polymers by the reaction of the living chain ends with appropriate monomers or terminating agents. A recently reported general anionic functionalization method was used to create well-defined terpyridine and hydroxyl end-functionalized polymers. In the first step, living polymeric organolithium compounds were reacted with silyl chlorides to form the corresponding silyl hydride-functionalized polymers. Then, these polymers were reacted with substituted alkenes in the presence of a hydrosilation catalyst to form the corresponding functionalized polymers. A new method was also developed, based on similar chemistry, to prepare an in-chain functionalized diblock copolymer where a variety of functional groups can be placed directly at the interface of the two blocks. This method was used to prepare both in-chain hydroxyl- and terpyridine-functionalized polystyrene-b-polyisoprene copolymers. Lewis bases effect dramatic changes in microstructure, initiation rates, propagation rates and monomer reactivity ratios for alkyllithium-initiated polymerizations of vinyl monomers in hydrocarbon solution. The stability of polymeric organolithium compounds and the mechanism of decomposition in the presence of various stoichiometric equivalents of tetrahydrofuran in benzene solutions were studied due the importance of THF as an additive."--Abstract.
Author : Enrique Saldivar-Guerra
Publisher : John Wiley & Sons
ISBN 13 : 1118480775
Total Pages : 660 pages
Book Rating : 4.1/5 (184 download)
Download or read book Handbook of Polymer Synthesis, Characterization, and Processing written by Enrique Saldivar-Guerra and published by John Wiley & Sons. This book was released on 2013-02-28 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering a broad range of polymer science topics, Handbook of Polymer Synthesis, Characterization, and Processing provides polymer industry professionals and researchers in polymer science and technology with a single, comprehensive handbook summarizing all aspects involved in the polymer production chain. The handbook focuses on industrially important polymers, analytical techniques, and formulation methods, with chapters covering step-growth, radical, and co-polymerization, crosslinking and grafting, reaction engineering, advanced technology applications, including conjugated, dendritic, and nanomaterial polymers and emulsions, and characterization methods, including spectroscopy, light scattering, and microscopy.
Author : Robert H. Grubbs
Publisher : John Wiley & Sons
ISBN 13 : 3527694056
Total Pages : 520 pages
Book Rating : 4.5/5 (276 download)
Download or read book Handbook of Metathesis, Volume 3 written by Robert H. Grubbs and published by John Wiley & Sons. This book was released on 2015-03-09 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of the "go-to" reference in this field is completely updated and features more than 80% new content, with emphasis on new developments in the field, especially in industrial applications. No other book covers the topic in such a comprehensive manner and in such high quality. Edited by the Nobel laureate R. H. Grubbs and E. Khosravi, Volume 3 of the 3-volume work focusses on polymer synthesis. With a list of contributors that reads like a "Who's-Who" of metathesis, this is an indispensable one-stop reference for chemists in academia and industry. View the set here - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527334246.html Other available volumes: Volume 1: Catalyst Development and Mechanism, Editors: R. H. Grubbs and A. G. Wenzel - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339485.html Volume 2: Applications in Organic Synthesis, Editors: R. H. Grubbs and D. J. O ́Leary - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339493.html
Author : Robert H. Grubbs
Publisher :
ISBN 13 :
Total Pages : 476 pages
Book Rating : 4.E/5 ( download)
Download or read book Handbook of Metathesis: Applications in polymer synthesis written by Robert H. Grubbs and published by . This book was released on 2003 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Krzysztof Matyjaszewski
Publisher :
ISBN 13 :
Total Pages : 506 pages
Book Rating : 4.3/5 (91 download)
Download or read book Controlled/living Radical Polymerization written by Krzysztof Matyjaszewski and published by . This book was released on 2000 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines recent progress in controlled/living radical polymerization. The volume focuses on three synthetic methods: atom transfer radical polymerization, nitroxide mediated polymerization and degenerative transfer via addition fragmentation. In addition, the volume covers the preparation and characterization of many never before seen materials using ATRP, NMP and RAFT.
Author : Graeme Moad
Publisher : Elsevier
ISBN 13 : 0080442889
Total Pages : 667 pages
Book Rating : 4.0/5 (84 download)
Download or read book The Chemistry of Radical Polymerization written by Graeme Moad and published by Elsevier. This book was released on 2006 with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book commences with a general introduction outlining the basic concepts of radical polymerization. This is followed by a chapter on radical reactions that is intended to lay the theoretical ground-work for the succeeding chapters on initiation, propagation and termination.
Author : Dieter A. Schlüter
Publisher : John Wiley & Sons
ISBN 13 : 3527327576
Total Pages : 1229 pages
Book Rating : 4.5/5 (273 download)
Download or read book Synthesis of Polymers written by Dieter A. Schlüter and published by John Wiley & Sons. This book was released on 2012-05-14 with total page 1229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers are huge macromolecules composed of repeating structural units. While polymer in popular usage suggests plastic, the term actually refers to a large class of natural and synthetic materials. Due to the extraordinary range of properties accessible, polymers have come to play an essential and ubiquitous role in everyday life - from plastics and elastomers on the one hand to natural biopolymers such as DNA and proteins on the other hand. The study of polymer science begins with understanding the methods in which these materials are synthesized. Polymer synthesis is a complex procedure and can take place in a variety of ways. This book brings together the "Who is who" of polymer science to give the readers an overview of the large field of polymer synthesis. It is a one-stop reference and a must-have for all Chemists, Polymer Chemists, Chemists in Industry, and Materials Scientists.
Author : Narendra Pal Singh Chauhan
Publisher : CRC Press
ISBN 13 : 1000291111
Total Pages : 304 pages
Book Rating : 4.0/5 (2 download)
Download or read book Functionalized Polymers written by Narendra Pal Singh Chauhan and published by CRC Press. This book was released on 2021-05-14 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functionalized polymers are macromolecules to which chemically bound functional groups are attached which can be used as catalysts, reagents, protective groups, etc. Functionalized polymers have low cost, ease of processing and attractive features for functional organic molecules. Chemical reactions for the introduction of functional groups in polymers and the conversion of functional groups in polymers depend on different properties. Such properties are of great importance for functionalization reactions for possible applications of reactive polymers. This book deals with the synthesis and design of various functional polymers, the modification of preformed polymer backbones and their various applications.
Author : Abdelhamid Elaissari
Publisher : CRC Press
ISBN 13 : 0824756460
Total Pages : 464 pages
Book Rating : 4.8/5 (247 download)
Download or read book Colloidal Polymers written by Abdelhamid Elaissari and published by CRC Press. This book was released on 2003-08-06 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amidst developments in nanotechnology and successes in catalytic emulsion polymerization of olefins, polymerization in dispersed media is arousing an increasing interest from both practical and fundamental points of view. This text describes ultramodern approaches to synthesis, preparation, characterization, and functionalization of latexes, nanoparticles, and numerous additional colloidal polymer systems. In chapters contributed by leading international researchers, it communicates critical parameters for method selection, presents guidelines for controlling structural and colloid properties, presents recent results and information on polymer colloids, and describes other tools to assist in the production of desirable outcomes.
