[PDF] Self Initiated Polymerization Of Methyl Methacrylate Using Atom Teransfer Radical Polymerization Method eBook

Author : Susheel Kalia
Publisher : Springer
Page : 390 pages
File Size : 30,69 MB
Release : 2014-12-04
Category : Technology & Engineering
ISBN : 3319135937

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Advances in Polymer Science enjoys a longstanding tradition and good reputation in its community. Each volume is dedicated to a current topic, and each review critically surveys one aspect of that topic, to place it within the context of the volume. The volumes typically summarize the significant developments of the last 5 to 10 years and discuss them critically, presenting selected examples, explaining and illustrating the important principles, and bringing together many important references of primary literature. On that basis, future research directions in the area can be discussed. Advances in Polymer Science volumes thus are important references for every polymer scientist, as well as for other scientists interested in polymer science - as an introduction to a neighboring field, or as a compilation of detailed information for the specialist.

Author :
Publisher :
Page : pages
File Size : 18,2 MB
Release : 2004
Category :
ISBN :

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In this work, methylmethacrylate, MMA was polymerized by ATRP method to obtain low molecular weight living polymers. The initiator was p-toluenesulfonylchloride and catalyst ligand complex system were CuCl-4,4’ dimethyl 2,2’bipyridine. Polymers with controlled molecular weight were obtained. The polymer chains were shown by NMR investigation to be mostly syndiotactic. The molecular weight and molecular weight distribution of some polymer samples were measured by GPC method. The K and a constants in [h]=K Ma equation were measured as 9.13x10-5 and 0.74, respectively. FT-IR and X-Ray results showed regularity in polymer chains. The molecular weight-Tg relations were verified from results of molecular weight-DSC results.

Author : Sophie Monge
Publisher : Royal Society of Chemistry
Page : 334 pages
File Size : 47,84 MB
Release : 2014-05-30
Category : Science
ISBN : 1849736464

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A comprehensive overview of the synthesis of different phosphorus-containing polymers and their uses in biomedical, environmental and energy applications.

Author : Krzysztof Matyjaszewski
Publisher : OUP USA
Page : 0 pages
File Size : 21,13 MB
Release : 2007-01-04
Category : Science
ISBN : 9780841239913

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The preparation and characterization of new materials with precisely controlled macromolecular dimensions, functionalities, and decomposition, as well as with well-defined topologies, is perhaps the main focus of contemporary polymer synthesis. The best control of molecular functions can be achieved in a controlled/living polymerization -- a chain growth process without chain breaking reactions. Recently, controlled/living polymerizations have extended to radical systems which are not only commercially important, but also have the largest potential due to the availability of radically polymerizable monomers, facile copolymerization and undemanding experimental conditions. Controlled Radical Polymerization will examine recent advances in mechanistic and synthetic aspects of controlled/living radical (co)polymerization systems. Not only will this book be focused on recent progress in the dynamically developing field of controlled/living radical polymerization, but it will be a sequel to the very popular ACS Symposium Series 685, 768, and 854. The book will consist of >30 chapters separated into seven subsections: Fundamentals, Mechanism of ATRP, Mechanisms of SFRP and Degenerative Transfer Processes, Controlled Architecture by CRP, Organic-inorganic Hybrids by CRP, Biomaterials by CRP and Industrial Applications. This book targets chemists and polymer scientists in academia and in industry.

Author : Songjun Li
Publisher : Elsevier
Page : 312 pages
File Size : 38,81 MB
Release : 2015-09-30
Category : Technology & Engineering
ISBN : 012801444X

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Molecularly Imprinted Catalysts: Principle, Synthesis, and Applications is the first book of its kind to provide an in-depth overview of molecularly imprinted catalysts and selective catalysis, including technical details, principles of selective catalysis, preparation processes, the catalytically active polymers themselves, and important progress made in this field. It serves as an important reference for scientists, students, and researchers who are working in the areas of molecular imprinting, catalysis, molecular recognition, materials science, biotechnology, and nanotechnology. Comprising a diverse group of experts from prestigious universities and industries across the world, the contributors to this book provide access to the latest knowledge and eye-catching achievements in the field, and an understanding of what progress has been made and to what extent it is being advanced in industry. The first book in the field on molecularly imprinted catalysts (MIPs) Provides a systematic background to selective catalysis, especially the basic concepts and key principles of the different MIP-based catalysts Features state-of-the art presentation of preparation methods and applications of MIPs Written by scientists from prestigious universities and industries across the world, and edited by veteran researchers in molecular imprinting and selective catalysis

Author : Fumin Ma
Publisher :
Page : 7 pages
File Size : 31,68 MB
Release : 2011
Category : Ionic Liquid
ISBN :

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Three brønsted acidic ionic liquids, 1-methylimidazolium acetate ([Hmim][CH3COO]), 1-methylimidazolium propionate ([Hmim][CH3CH2COO]) and 1-methylimidazolium butyrate ([Hmim][CH3CH2CH2COO]) were used as reaction medium for atom transfer radical polymerization of methyl methacrylate with ethyl 2-bromoisobutyrate (EBiB)/CuBr as the initiating system. Kinetic studies, chain extension and block copolymerization confirmed the well-controlled manner of these polymerizations in three brønsted acidic ionic liquids. The reactions were fast and the polydispersities of the polymers were quite narrow (1.10

Author : Mary Nguyen
Publisher :
Page : pages
File Size : 26,34 MB
Release : 2017
Category :
ISBN :

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Atom transfer radical polymerizations (ATRP) of methyl acrylate (MA), methyl methacrylate (MMA) and styrene (St) were conducted by continuous feeding of Cu(I)X/Ligand activators. Typically, the monomer, the initiator, and a certain amount of deactivator, Cu(II)X2/Ligand, were placed in a Schlenk flask deoxygenized by bubbling with N2. The activator, Cu(I)X/Ligand, was placed in a gas-tight syringe and was added at a constant rate to the Schlenk flask using a syringe pump. In ATRP, the Cu(I) catalyst would undergo many oxidation/reduction cycles when the propagation of polymer chains is taking place. However, some of the Cu(I) would finally be oxidized to Cu(II) irreversibly. According to the principle of halogen conservation, the end-group loss equals the amount of Cu(I) that is permanently oxidized to Cu(II). Thus, by reducing the amount of Cu(I) added to the reaction, ATRP by continuous feeding of activators sets an upper limit of the potential end-group loss. The end-group fidelity information is readily known at the beginning of the reaction.