The Synthesis Of Well Defined Functional Homo And Block Copolymers In Aqueous Media Via Reversible Addition Fragmentation Chain Transfer Raft Polymerization PDF Download
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Author | : Murat Mertoğlu |
Publisher | : |
Total Pages | : 140 |
Release | : 2005 |
Genre | : |
ISBN | : |
Download The Synthesis of Well Defined Functional Homo- and Block Copolymers in Aqueous Media Via Reversible Addition Fragmentation Chain Transfer (RAFT) Polymerization Book in PDF, ePub and Kindle
Author | : Anil Mahapatro |
Publisher | : American Chemical Society |
Total Pages | : 442 |
Release | : 2008-04-17 |
Genre | : Medical |
ISBN | : |
Download Polymers for Biomedical Applications Book in PDF, ePub and Kindle
Research on applications of polymers for biomedical applications has increased dramatically to find improved medical plastics for this rapidly evolving field. This book brings together various aspects of recent research and developments within academia and industry related to polymers for biomedical applications.
Author | : Bernhard V. K. J. Schmidt |
Publisher | : Springer Science & Business |
Total Pages | : 218 |
Release | : 2014-04-21 |
Genre | : Technology & Engineering |
ISBN | : 3319060775 |
Download Novel Macromolecular Architectures via a Combination of Cyclodextrin Host/Guest Complexation and RAFT Polymerization Book in PDF, ePub and Kindle
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.
Author | : Xeniya Savelyeva |
Publisher | : |
Total Pages | : |
Release | : 2015 |
Genre | : |
ISBN | : |
Download Synthesis of Amino Functional Monomers Via Controlled Radical Polymerization Book in PDF, ePub and Kindle
"Controlled radical polymerization (CRP) techniques has allowed the synthesis of numerous polymeric materials with comparable control to that of true "living" techniques without the need for stringent manipulation techniques. The control over chain length, dispersity and composition is desirable in many fields, such as stimuli-responsive (temperature or pH) drug carriers. These thermoresponsive polymers in aqueous media are often characterized by lower critical solution temperature (LCST) behavior, where the polymer becomes insoluble with temperature increases. The LCST can be tuned by the structural features of the constituent monomer, molecular weight, molecular weight distribution and copolymerization with other monomers. Narrow molecular weight distribution is the key factor determining the sharpness needed for determining the LCST, which is often exemplified by the cloud point temperature (CPT). Using CRP techniques, specifically nitroxide mediated polymerization (NMP), with an alkoxyamine unimolecular initiator, 2-([tert-butyl[1-(diethoxyphosphoryl)-2,2-dimethylpropyl]amino]oxy)-2-methylpropanoic acid (BlocBuilder) and an additional free nitroxide (SG1), the effect of controlling comonomer (9-(4-vinylbenzyl)-9H-carbazole (VBK)) on polymerization kinetics of N-(2-methacryloyloxyethyl) pyrrolidone (MAEPYR) and the effect of final copolymer composition on CPT was studied. Adding at least 5 mol% VBK, the dispersity Đ of the poly(MAEPYR-stat-VBK) copolymers was below 1.4. The CPT decreased from 59.0 °C to 49.7 °C with addition of only 1 mol% of VBK in the copolymer, and it can be further fine-tuned by changing the solution concentration and the heating rate. Another CRP technique, reversible addition fragmentation chain-transfer polymerization (RAFT), was applied to homopolymerization of N-(3-methoxypropyl) acrylamide (MPAM) to yield well-defined polymers (with (M_n)− = 14.3 - 25.2 kg mol-1 and low Đ ~ 1.17 - 1.47) needed for precise determination of CPT. Thermoresponsive behaviour of poly(MPAM) in aqueous media revealed CPTs between 73 and 92 °C, unlike other literature reports where the polymers, synthesized by conventional radical polymerization, showed conflicting results regarding their LCST" --
Author | : Wolfgang Knoll |
Publisher | : John Wiley & Sons |
Total Pages | : 1107 |
Release | : 2013-02-12 |
Genre | : Science |
ISBN | : 3527638490 |
Download Functional Polymer Films, 2 Volume Set Book in PDF, ePub and Kindle
Very thin film materials have emerged as a highly interesting and useful quasi 2D-state functionality. They have given rise to numerous applications ranging from protective and smart coatings to electronics, sensors and display technology as well as serving biological, analytical and medical purposes. The tailoring of polymer film properties and functions has become a major research field. As opposed to the traditional treatise on polymer and resin-based coatings, this one-stop reference is the first to give readers a comprehensive view of the latest macromolecular and supramolecular film-based nanotechnology. Bringing together all the important facets and state-of-the-art research, the two well-structured volumes cover film assembly and depostion, functionality and patterning, and analysis and characterization. The result is an in-depth understanding of the phenomena, ordering, scale effects, fabrication, and analysis of polymer ultrathin films. This book will be a valuable addition for Materials Scientists, Polymer Chemists, Surface Scientists, Bioengineers, Coatings Specialists, Chemical Engineers, and Scientists working in this important research field and industry.
Author | : Christopher Barner-Kowollik |
Publisher | : John Wiley & Sons |
Total Pages | : 556 |
Release | : 2008-09-08 |
Genre | : Technology & Engineering |
ISBN | : 3527622764 |
Download Handbook of RAFT Polymerization Book in PDF, ePub and Kindle
Spanning the entire field from fundamentals to applications in material science, this one-stop source is the first comprehensive reference for polymer, physical and surface chemists, materials scientists, chemical engineers, and those chemists working in industry. From the contents: * Introduction: Living Free Radical Polymerization and the RAFT Process * Fundamental Structure-Reactivity Correlations Governing the RAFT Process * Mechanism and Kinetics * The RAFT Process as a Kinetic Tool * Theory and Practice in Technical Applications * RAFT Polymerization in Bulk and Organic Solvents, as well as Homogeneous Aqueous Systems * Emulsion and Mini-Emulsion Polymerization * Complex Architecture Design * Macromolecular Design via the Interchange of Xanthates * Surface Modification * Stability and Physical Properties of RAFT Polymers * Novel Materials: From Drug Delivery to Opto-Electronics * Outlook and Future Developments
Author | : Narendra Pal Singh Chauhan |
Publisher | : CRC Press |
Total Pages | : 304 |
Release | : 2021-05-14 |
Genre | : Science |
ISBN | : 1000291111 |
Download Functionalized Polymers Book in PDF, ePub and Kindle
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 | : Nikhil K. Singha |
Publisher | : Walter de Gruyter GmbH & Co KG |
Total Pages | : 302 |
Release | : 2020-01-20 |
Genre | : Technology & Engineering |
ISBN | : 3110643693 |
Download Reversible Deactivation Radical Polymerization Book in PDF, ePub and Kindle
This book describes strategies and mechanism of reversible deactivation radical polymerization (RDRP) to synthesize functional polymers. Several approaches such as atom transfer radical polymerization and the combination of click chemistry and RDRP are summarized. Contributors from interdisciplinary fields highlight applications in nanotechnology, self-healing materials, oil and water resistant coatings and controlled drug delivery systems.
Author | : Krzysztof Matyjaszewski |
Publisher | : |
Total Pages | : 712 |
Release | : 2003 |
Genre | : Science |
ISBN | : |
Download Advances in Controlled/living Radical Polymerization Book in PDF, ePub and Kindle
Advances in Controlled/Living Radical Polymerization presents new developments in controlled/living radical polymerization in three areas: atom transfer radical polymerization (ATRP), nitroxide mediated polymerization (NMP), and reversible addition-fragmentation transfer (RAFT). This book also includes synthesis and characterization of many new materials.
Author | : |
Publisher | : |
Total Pages | : 840 |
Release | : 2009 |
Genre | : Dissertations, Academic |
ISBN | : |
Download Dissertation Abstracts International Book in PDF, ePub and Kindle