Anionic Synthesis Of Well Defined Functionalized And Star Branched Polymers

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Anionic Synthesis of Well-defined Functionalized and Star-branched Polymers

Author : Manuela Ocampo
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (911 download)

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Book Synopsis Anionic Synthesis of Well-defined Functionalized and Star-branched Polymers by : Manuela Ocampo

Download or read book Anionic Synthesis of Well-defined Functionalized and Star-branched Polymers written by Manuela Ocampo and published by . This book was released on 2007 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel methods for the synthesis of chain-end and in-chain functionalized polymers, as well as star polymers, were developed using anionic polymerization techniques. A new mechanism for the reaction of polymeric organolithium compounds with thiiranes has been found. The reaction of poly(styryl)lithium and poly(butadienyl)lithium with propylene sulfide and ethylene sulfide was investigated in hydrocarbon solution for the preparation of thiol-functional polymers. It was found by MALDI-TOF mass spectral analysis of the reaction products that the reaction proceeded by attack of the anion on the methylene carbon atom of the thiirane ring followed by ring opening to form the thiol-functionalized polymer. The reaction of poly(styryl)lithium with trimethylene sulfide did not produce the corresponding thiol-functionalized polymer; the resulting methyl-terminated polymer was formed by attack of the anion on the sulfur atom followed by ring opening to form a primary carbanion. A new method for synthesis of alkoxysilyl-functionalized polymers was developed. Using a general functionalization methodology based on the hydrosilation of vinyltrimethoxysilane with [omega]-silyl hydride-functionalized polystyrene, alkoxysilyl-functionalized polystyrene was obtained in high yield (83 %). The main side product was vinylsilane-functionalized polymer. A small amount of dimer (approximately 2 %) was formed from the hydrosilation reaction of silyl hydride-functionalized polymer and vinylsilane-functionalized polymer. Star polymers with an average number of 6.8 arms were obtained by reacting poly(styryl)lithium with 6.6 equivalents of vinyldimethylchlorosilane in benzene at 30 °C. It was found that, in benzene at 30 °C, vinyldimethylchlorosilane is an efficient linking agent for the preparation of well-defined star-branched polymers. In contrast, the reaction of poly(styryl)lithium with 5 equivalents of vinyldimethylchlorosilane in THF at -78 °C produced vinylsilane-functionalized polymer in high yield (> 93 %). Poly(styryl)lithium was reacted with 2.5 equivalents of vinyldimethylethoxysilane; reaction occurred exclusively by the addition of the living anion to the vinyl group. In-chain, dihydroxyl-functionalized polystyrene was prepared by reaction of poly(styryl)lithium and 1,3-butadiene diepoxide. The hydroxyl functionalities were activated with potassium naphthalenide. Addition of ethylene oxide monomer yielded the corresponding heteroarm polystyrene/poly(ethylene oxide) stars. Two commercially available triepoxides, N,N-diglycidyl-4-glycidyloxyaniline and Tactix 742, were used to prepare the corresponding 3-armed stars in high yield.

Complex Macromolecular Architectures

Author : Nikos Hadjichristidis
Publisher : John Wiley & Sons
ISBN 13 : 0470828277
Total Pages : 840 pages
Book Rating : 4.4/5 (78 download)

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Book Synopsis Complex Macromolecular Architectures by : Nikos Hadjichristidis

Download or read book Complex Macromolecular Architectures written by Nikos Hadjichristidis and published by John Wiley & Sons. This book was released on 2011-04-20 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of CMA (complex macromolecular architecture) stands at the cutting edge of materials science, and has been a locus of intense research activity in recent years. This book gives an extensive description of the synthesis, characterization, and self-assembly of recently-developed advanced architectural materials with a number of potential applications. The architectural polymers, including bio-conjugated hybrid polymers with poly(amino acid)s and gluco-polymers, star-branched and dendrimer-like hyperbranched polymers, cyclic polymers, dendrigraft polymers, rod-coil and helix-coil block copolymers, are introduced chapter by chapter in the book. In particular, the book also emphasizes the topic of synthetic breakthroughs by living/controlled polymerization since 2000. Furthermore, renowned authors contribute on special topics such as helical polyisocyanates, metallopolymers, stereospecific polymers, hydrogen-bonded supramolecular polymers, conjugated polymers, and polyrotaxanes, which have attracted considerable interest as novel polymer materials with potential future applications. In addition, recent advances in reactive blending achieved with well-defined end-functionalized polymers are discussed from an industrial point of view. Topics on polymer-based nanotechnologies, including self-assembled architectures and suprastructures, nano-structured materials and devices, nanofabrication, surface nanostructures, and their AFM imaging analysis of hetero-phased polymers are also included. Provides comprehensive coverage of recently developed advanced architectural materials Covers hot new areas such as: click chemistry; chain walking; polyhomologation; ADMET Edited by highly regarded scientists in the field Contains contributions from 26 leading experts from Europe, North America, and Asia Researchers in academia and industry specializing in polymer chemistry will find this book to be an ideal survey of the most recent advances in the area. The book is also suitable as supplementary reading for students enrolled in Polymer Synthetic Chemistry, Polymer Synthesis, Polymer Design, Advanced Polymer Chemistry, Soft Matter Science, and Materials Science courses. Color versions of selected figures can be found at www.wiley.com/go/hadjichristidis

Anionic Polymerization

Author : Nikos Hadjichristidis
Publisher : Springer
ISBN 13 : 4431541861
Total Pages : 1075 pages
Book Rating : 4.4/5 (315 download)

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Book Synopsis Anionic Polymerization by : Nikos Hadjichristidis

Download or read book Anionic Polymerization written by Nikos Hadjichristidis and published by Springer. This book was released on 2015-09-01 with total page 1075 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents these important facts: a) The mechanism of anionic polymerization, a more than 50-year challenge in polymer chemistry, has now become better understood; b) Precise synthesis of many polymers with novel architectures (triblock, multi-block, graft, exact graft, comb, cyclic, many armed stars with multi-components, dendrimer-like hyper-branched, and their structural mixed (co)polymers, etc.) have been advanced significantly; c) Based on such polymers, new morphological and self-organizing nano-objects and supra molecular assemblies have been created and widely studied and are considered nanodevices in the fields of nano science and technology; d) New high-tech and industrial applications for polymeric materials synthesized by anionic polymerization have been proposed. These remarkable developments have taken place in the last 15 years. Anionic polymerization continues to be the only truly living polymerization system (100 % termination free under appropriate conditions) and consequently the only one with unique capabilities in the synthesis of well-defined (i.e., precisely controlled molecular weight, nearly mono-disperse molecular weight distribution, structural and compositional homogeneity) complex macromolecular architectures. This book, with contributions from the world’s leading specialists, will be useful for all researchers, including students, working in universities, in research organizations, and in industry.

Miktoarm Star Polymers

Author : Ashok Kakkar
Publisher : Royal Society of Chemistry
ISBN 13 : 1782625755
Total Pages : 242 pages
Book Rating : 4.7/5 (826 download)

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Book Synopsis Miktoarm Star Polymers by : Ashok Kakkar

Download or read book Miktoarm Star Polymers written by Ashok Kakkar and published by Royal Society of Chemistry. This book was released on 2017-04-20 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a detailed monograph on the topic, this book features chapters from experts actively working in this field, and is intended to provide the reader with a unique overview of the fundamental principles of this exciting macromolecular platform.

Synthesis of Well-Defined Multi-End Functionalized Polymers Via Living Anionic Polymerization

Author : Norazilawati Muhamad Sarih
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.:/5 (757 download)

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Book Synopsis Synthesis of Well-Defined Multi-End Functionalized Polymers Via Living Anionic Polymerization by : Norazilawati Muhamad Sarih

Download or read book Synthesis of Well-Defined Multi-End Functionalized Polymers Via Living Anionic Polymerization written by Norazilawati Muhamad Sarih and published by . This book was released on 2010 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerous applications require specific properties at polymer surfaces that differ from the bulk, while retaining the advantageous properties of the bulk polymer. In this thesis, we describe work aimed at producing a series of multi-end functionalized polystyrene and polyisoprene additives with a wide range of molecular weights, carrying 1 to 3 fluoroalkyl groups that have been prepared by end capping the living chain ends of polymers prepared via anionic polymerization reactions. The resulting polymers have a well-defined structure with interesting surface modifying properties. We have also carried out hydrogenation of end functionalized polyisoprene to form poly(ethylene-alt-propylene) with the same functional group. The resulting polymers have been used as additives in an attempt to render the surface of polymer films hydrophobic/lipophobic and we have characterized these polymer films using static contact angle measurements with water as the main contact fluid. We have systematically studied the effect of additive molecular weight, concentration and annealing conditions on the surface properties. It has been discovered that these additives undergo rapid adsorption to a surface or interface and significantly enhance surface properties. In addition, to support the contact angles results, elastic recoil detection analysis (ERDA) and Rutherford backscattering analysis (RBS) have been carried out to acquire further quantitative evidence of surface segregation.

Synthesis of Polymers

Author : Dieter A. Schlüter
Publisher : John Wiley & Sons
ISBN 13 : 3527644083
Total Pages : 1229 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Synthesis of Polymers by : Dieter A. Schlüter

Download or read book Synthesis of Polymers written by Dieter A. Schlüter and published by John Wiley & Sons. This book was released on 2012-05-23 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.

Synthesis of End-chain and In-chain Functionalized Polymers by Anionic Polymerization

Author : Michael Olechnowicz
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (294 download)

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Book Synopsis Synthesis of End-chain and In-chain Functionalized Polymers by Anionic Polymerization by : Michael Olechnowicz

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.

Anionic Polymerization

Author : Nikos Hadjichristidis
Publisher :
ISBN 13 : 9784431541875
Total Pages : pages
Book Rating : 4.5/5 (418 download)

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Book Synopsis Anionic Polymerization by : Nikos Hadjichristidis

Download or read book Anionic Polymerization written by Nikos Hadjichristidis and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents these important facts: a) The mechanism of anionic polymerization, a more than 50-year challenge in polymer chemistry, has now become better understood; b) Precise synthesis of many polymers with novel architectures (triblock, multi-block, graft, exact graft, comb, cyclic, many armed stars with multi-components, dendrimer-like hyper-branched, and their structural mixed (co)polymers, etc.) have been advanced significantly; c) Based on such polymers, new morphological and self-organizing nano-objects and supramolecular assemblies have been created and widely studied and are considered nanodevices in the fields of nanoscience and technology; d) New high-tech and industrial applications for polymeric materials synthesized by anionic polymerization have been proposed. These remarkable developments have taken place in the last 15 years. Anionic polymerization continues to be the only truly living polymerization system (100 % termination free under appropriate conditions) and consequently the only one with unique capabilities in the synthesis of well-defined (i.e., precisely controlled molecular weight, nearly mono-disperse molecular weight distribution, structural and compositional homogeneity) complex macromolecular architectures. This book, with contributions from the world's leading specialists, will be useful for all researchers, including students, working in universities, in research organizations, and in industry.

Anionic Synthesis of Functionalized Linear and Star-branched Polymers

Author : Huimin Yang
Publisher :
ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.:/5 (378 download)

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Book Synopsis Anionic Synthesis of Functionalized Linear and Star-branched Polymers by : Huimin Yang

Download or read book Anionic Synthesis of Functionalized Linear and Star-branched Polymers written by Huimin Yang and published by . This book was released on 1997 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anionic Synthesis of Functionalized Polymers

Author : Jonathan E. Janoski
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (912 download)

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Book Synopsis Anionic Synthesis of Functionalized Polymers by : Jonathan E. Janoski

Download or read book Anionic Synthesis of Functionalized Polymers written by Jonathan E. Janoski and published by . This book was released on 2010 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis of well-defined functionalized polymers is an important area of research due to their wide array of applications. The work presented herein can be divided into three categories: a) functional initiator synthesis; b) chain-end and in-chain functionalization and c) functional monomer synthesis and polymerization. All three methods involve both anionic polymerization and hydrosilation. In this work, all anionic polymerizations were performed at room temperature in hydrocarbon solvent with an alkyllithium initiator. A functional 4-pentenyllithium initiator was prepared in 70% yield and was used for the synthesis of [alpha] and [alpha,omega]-functionalized polystyrene. 4-Pentenyllithium was used to initiate styrene polymerization in benzene in the presence of 5 equivalents of tetrahydrofuran. Narrow polydispersity indices and good agreement between calculated and observed molecular weights were observed for the methanol-terminated product. [alpha]-Triethoxysilyl-functionalized polystyrene was quantitatively prepared by hydrosilation with triethoxysilane and [alpha]-4-pentenylpolystyrene. [alpha]-4-Pentenyl-[omega]-silyl hydridefunctionalized polystyrene and [alpha]-4-pentenyl-[omega]-thiol hydride functionalized polystyrene were quantitatively prepared by terminating [alpha]-4-pentenylpoly(styryl)lithium with chlorodimethylsilane and ethylene sulfide, respectively. The [alpha]-4-pentenyl-[omega]-silyl hydride-functionalized polystyrene showed good agreement between calculated and observed molecular weights and a narrow polydispersity. [alpha]-4-Pentenyl-[omega]-thiolfunctionalized polystyrene showed a dimer peak due to oxidative coupling when quenched with methanol. Triethoxysilyl-functionalized, high-1,4-polybutadiene was prepared by reacting the pendant double bonds of the 1,2-units with triethoxysilane via hydrosilation. High-yielding reactions between the polymeric organolithium chain-ends and silyl chlorides were used to obtain the desired polymeric silyl hydrides for further functionalization. In-chain and chain-end cyano-functionalized polystyrenes were prepared. Chain-end, silyl hydride-functionalized polystyrene was prepared quantitatively. Hydrosilation of chain-end, silyl hydride-functionalized polystyrene with allyl cyanide resulted in [omega]-cyano-functionalized polystyrene, which was prepared in 87% yield. In-chain, silyl hydride-functionalized polystyrene was prepared by terminating excess poly(styryl)lithium with dichloromethylsilane. The remaining poly(styryl)lithium was terminated with ethylene oxide to aid in chromatographic separation to yield the pure in-chain, silyl hydride-functionalized polystyrene in 96% yield. Hydrosilation of in-chain, silyl hydride-functionalized polystyrene with allyl cyanide resulted in cyano in-chain functionalized polystyrene in 58% yield after 2 weeks of reaction time at elevated temperature. [omega]-Silyl dihydride-functionalized polystyrene was prepared in 92% yield by inverse addition of poly(styryl)lithium to dichloromethylsilane then reduction with lithium aluminum hydride. Functionalization with allyl cyanide yielded [omega]-dicyanofunctionalized polystyrene quantitatively. Synthesis of functionalized polymers from silyl hydride-substituted monomers was also investigated. para-Dimethylsilylstyrene was prepared from 4-chlorostyrene in 84% yield. Homopolymerization, copolymerization, and end-capping of poly(styryl)lithium in cyclohexane with this monomer was investigated, and it was found that a linking reaction is occuring. meta-Dimethylsilylstyrene was prepared from 3-bromostyrene in 75% yield. Anionic homopolymerization, and copolymerization of this monomer were investigated, and it was found that a more vigorous linking reaction was taking place compared to the para-substituted analog.

Anionic Synthesis of In-chain and Chain-end Functionalized Polymers

Author : Sumana Roy Chowdhury
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (225 download)

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Book Synopsis Anionic Synthesis of In-chain and Chain-end Functionalized Polymers by : Sumana Roy Chowdhury

Download or read book Anionic Synthesis of In-chain and Chain-end Functionalized Polymers written by Sumana Roy Chowdhury and published by . This book was released on 2006 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objective of this work was to anionically synthesize well-defined polymers having functional groups either at the chain-end or along the polymer chain. General functionalization methods (GFM) were used for synthesizing both kinds of polymers. Chain-end functionalized polymers were synthesized by terminating the anionically synthesized, living polymer chains using chlorodimethylsilane. Hydrosilation reactions were then done between the silyl-hydride groups at the chain-ends and the double bonds of commercially available substituted alkenes. This produced a range of well-defined polymers having the desired functional groups at the chain ends. In-chain functionalized polymers were synthesized by anionically polymerizing a silyl-hydride functionalized styrene monomer: (4-vinylphenyl)dimethylsilane. Polymerizations were done at room temperature in hydrocarbon solvents to produce well-defined polymers. Functional groups were then introduced into the polymer chains by use of hydrosilation reactions done post-polymerization. The functionalized polymers produced were characterized using SEC, 1H and 13C NMR, FTIR, MALDI TOF mass spectrometry and DSC. The monomer reactivity ratios in the copolymerization of styrene with (4-vinylphenyl)dimethylsilane were also measured. A series of copolymerizations was done with different molar ratios of styrene(S) and (4-vinylphenyl)dimethylsilane(Si). Three different methods were used to determine the values of the monomer reactivity ratios: Fineman-Ross, Kelen-Tudos and Error-In-Variable (EVM) methods. The average values of the two monomer reactivity ratios obtained were: r(Si) =0.16 and r(S) = 1.74. From these values it was observed that in the copolymerization of styrene with (4-vinylphenyl)dimethylsilane, the second monomer was preferentially incorporated into the polymer chain. Also, r(Si)r(S) = 0.27, which shows that the copolymer has a tendency to have an alternating structure. Amino acid-functionalized polymers (biohybrids) were synthesized by using a simple and efficient, three-step method. The first step was to make a copolymer of styrene with (4-vinylphenyl)dimethylsilane, followed by introduction of amine functional groups into the polymer chain, suing a hydrosilation reactions between the silyl-hydride units in the copolymer chain and the double bond of allyl amine. The third step was a condensation reaction between these amine functional groups on the copolymer chain and the carboxyl group on N-carbobenzyloxy-phenylalanine (a protected amino acid). Although this method has been used to incorporate a particular amino acid onto the polymer chain, it maybe possible to extend this procedure to introduce virtually any amino acid or peptide group into the polymer chain. Finally a thermoplastic elastomer (TPE) was synthesized using the monomer (4-vinylphenyl)dimethylsilane. The first block of this TPE was a copolymer block of styrene with (4-vinylphenyl)dimethylsilane, followed by a polyisoprene block and finally another copolymer block of styrene and (4-vinylphenyl)dimethylsilane. This polymer was characterized using SEC, 1H and 13C NMR, FTIR, DSC, DMTA, TEM and tensile testing. It was seen to exhibit properties similar to those of a regular styrene-diene-styrene TPE. However, the silyl-hydride units introduced into this polymer chain can be easily converted to different functional groups using hydrosilation reactions. Introduction of such functional groups would be helpful in tailoring the properties of the TPE."--Abstract.

Anionic Polymerization

Author : Henry Hsieh
Publisher : CRC Press
ISBN 13 : 9780824795238
Total Pages : 748 pages
Book Rating : 4.7/5 (952 download)

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Book Synopsis Anionic Polymerization by : Henry Hsieh

Download or read book Anionic Polymerization written by Henry Hsieh and published by CRC Press. This book was released on 1996-03-15 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work introduces the basic theories and experimental methods of anionic polymerization as well as the synthesis, analysis and characteristics of anionic polymerized products. It details the creation of linear and branched polymers, random and block copolymers, graft and macromonomers, and many other substances. The work emphasizes the relationship between fundamental principles and commercial applications.;College or university bookstores may purchase five or more copies at a special student price, available on request from Marcel Dekker, Inc.

Recent Advances in Anionic Polymerization

Author : T.E. Hogen-Esch
Publisher : Springer Science & Business Media
ISBN 13 : 9400931751
Total Pages : 453 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Recent Advances in Anionic Polymerization by : T.E. Hogen-Esch

Download or read book Recent Advances in Anionic Polymerization written by T.E. Hogen-Esch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the years the field of anionic polymerization has attracted numerous outstanding scientists, and today it still is being pursued by many researchers all over the world. The exciting discovery of termination-less polymerization processes and living polymers culminating in the development of narrow molecular weight polymers, star polymers, and tailor-made block and graft copolymers, contributed immensely to the rapid expansion of polymer science. Areas of active research in anionic polymerization presently include the structure of ion pairs and their role in regulating polymer structure, ring opening polymerization of heterocyclic monomers, synthesis of well-defined block and graft copolymers including the application of macromers in such systems, telechelic polymers with functional end groups, and other topics. New developments in the organic chemistry of carbanions such as dipolar carbanions impinge on the field of anionic polymerization. More sophisticated characterization techniques have been instrumental in obtaining better correlations between the structure of polymers and that of intermediates leading to their formation. This book contains the proceedings of the international symposium on "Recent Advances in Anionic Polymerization and Related Processes" which was held at the 1986 spring meeting of the American Chemical Society. It was the first Polymer Division-sponsored meeting exclusively devoted to anionic polymerization since the Houston ACS meeting in the spring of 1980. The proceedings of that meeting were published in the book "Anionic Polymerization", ACS Symposium Series No. 166, edited by Dr. J. E. McGrath.

Synthesis of Well-defined Cyclic, Branched, and Water-soluble Polymers Via the Anionic Polymerization of 2-vinylpyridine

Author : William Toreki
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (198 download)

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Book Synopsis Synthesis of Well-defined Cyclic, Branched, and Water-soluble Polymers Via the Anionic Polymerization of 2-vinylpyridine by : William Toreki

Download or read book Synthesis of Well-defined Cyclic, Branched, and Water-soluble Polymers Via the Anionic Polymerization of 2-vinylpyridine written by William Toreki and published by . This book was released on 1988 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Basics of Polymers

Author : Muralisrinivasan Natamai Subramanian
Publisher : Momentum Press
ISBN 13 : 1606505858
Total Pages : 180 pages
Book Rating : 4.6/5 (65 download)

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Book Synopsis Basics of Polymers by : Muralisrinivasan Natamai Subramanian

Download or read book Basics of Polymers written by Muralisrinivasan Natamai Subramanian and published by Momentum Press. This book was released on 2015-12-30 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basics of Polymers: Materials and Synthesis is a major investigative tool in the design and synthesis of polymers in the modern academic and industrial fields. Materials and synthesis encompass a wide range of operations such as selection of monomer(s) and polymerization techniques for the synthesis of materials under various operating conditions. The design and synthesis of each process should therefore be based on specific features. This book highlights the diversity of approaches used in understanding polymer synthesis. This book is designed to be used as study materials for students, professionals, and professors that support their wide use on material and synthesis. It emphasizes the value of each relevant synthesis method and polymerization type, rather than complex mechanisms or the history of its development. An area of considerable interest in this book is polymer synthesis in terms of the relationship between the structure and function of monomer(s). This book is also directed toward postgraduate students and practicing engineers who wish to develop polymer synthesis.

Synthesis and Characterization of New Multifunctional Initiators for Anionic Polymerization and the Use of Poly(4-hydroxystyrene) as a Template for New Polymers

Download Synthesis and Characterization of New Multifunctional Initiators for Anionic Polymerization and the Use of Poly(4-hydroxystyrene) as a Template for New Polymers PDF Online Free

Author : Christopher Michael Hurley
Publisher :
ISBN 13 :
Total Pages : 151 pages
Book Rating : 4.:/5 (975 download)

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Book Synopsis Synthesis and Characterization of New Multifunctional Initiators for Anionic Polymerization and the Use of Poly(4-hydroxystyrene) as a Template for New Polymers by : Christopher Michael Hurley

Download or read book Synthesis and Characterization of New Multifunctional Initiators for Anionic Polymerization and the Use of Poly(4-hydroxystyrene) as a Template for New Polymers written by Christopher Michael Hurley and published by . This book was released on 2016 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation explores the synthesis and use of multifunctional anionic polymerization initiators for the purpose of opening the gateway to the synthesis of polymer architectures of greater complexity. First the multifunctional oxyanion initiator generated by reacting poly(4-hydroxystyrene) with sodium hydride was used to synthesize a previously unknown polymer containing an aryl halide functional group. The homopolymer solution self-assembly behavior of poly(4-hydroxystyrene) and the newly synthesized poly (4-(4-bromophenyloxy)styrene) were both investigated. This is followed by the synthesis and characterization of multifunctional alkyne core molecules and random copolymers of polystyrene-co-poly(4-hydroxystyrene) which served as templates for the synthesis of new random copolymers of polystyrene-co-poly(4-(2- propynyloxy)styrene). The newly formed multifunctional alkyne core molecules and alkyne functionalized random copolymers served as polymer backbones in a "grafting to" strategy. Previously prepared azide terminated polymers were grafted to the multifunctional alkyne core molecules and polymer backbones by copper (I) catalyzed alkyne-azide cycloaddition reactions. Lastly, the synthesis of a new hydrocarbon soluble multifunctional initiator was undertaken. The resulting molecule was shown to be an efficient initiator of anionic polymerization in non-polar solvent in the absence of polar additives, necessary in all previous attempts to combat large scale aggregation of such multifunctional initiator. This new initiator will open the way to facile synthesis of well-defined star polymers, star-block copolymers, and more complex polymer architectures.

End-group Functionalization of Anionically Synthesized Polymers Via Hydrosilation Reactions

Author : Hoon Kim
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (155 download)

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Book Synopsis End-group Functionalization of Anionically Synthesized Polymers Via Hydrosilation Reactions by : Hoon Kim

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