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Reaction Network Identification In High Temperature Polymerization Of N Butyl Acrylate
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Book Synopsis Reaction Network Identification in High-temperature Polymerization of N-Butyl Acrylate by : Felix S. Rantow
Download or read book Reaction Network Identification in High-temperature Polymerization of N-Butyl Acrylate written by Felix S. Rantow and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Study of Chain Transfer Reactions in Self-Initiated High-Temperature Polymerization of Alkyl Acrylates by : Nazanin Moghadam Maragheh
Download or read book Computational Study of Chain Transfer Reactions in Self-Initiated High-Temperature Polymerization of Alkyl Acrylates written by Nazanin Moghadam Maragheh and published by . This book was released on 2015 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: A better understanding of the kinetics of intermolecular chain transfer reactions, such as chain transfer to solvent, monomer and polymer, allows one to produce higher quality polymer resins. In this research project, kinetics of chain transfer to monomer (CTM), chain transfer to polymer (CTP), and chain transfer to solvent (CTS) reactions in self-initiated high-temperature homo-polymerization of alkyl acrylates (methyl, ethyl and n-butyl acrylate) were studied. Possible mechanisms of the chain transfer reactions were studied using density functional theory (DFT) calculations. Transition state theory was used to estimate rate constants of the reactions. Effects of live polymer chain length, type of mono-radical that initiated the live polymer chain, and type of live polymer chain radical (tertiary vs. secondary) on the energy barriers and rate constants of the involved reaction steps were investigated theoretically. The results indicated that abstractions of a hydrogen atom (by a live polymer chain) from the methyl group in methyl acrylate (MA), the methylene group in ethyl acrylate (EA), and methylene groups in n-butyl acrylate (n-BA) are the most likely mechanisms of CTM. Among all possible CTP reaction mechanisms, hydrogen atom abstraction from a tertiary carbon atom, which leads to the formation of a stable tertiary radical, was identified as the most favorable mechanism for CTP reaction in alkyl acrylates. The CTP reactivity of MA, EA, and n-BA was also compared; the difference in the end-substituent group (MA, EA, or n-BA) does not affect the kinetics of the CTP reactions remarkably. Tertiary hydrogens of dead polymers formed by disproportionation reactions are most likely to be transferred to live polymer chains in CTP reactions. Chain transfer reactions to several solvents such as butanol (polar, protic), methyl ethyl ketone (MEK) (polar, aprotic), and p-xylene (nonpolar) were studied theoretically. The estimated lower activation energies and higher rate constants of chain transfer to n-butanol compared to those of MEK and p-xylene are indicative of the higher CTS reactivity of n-butanol. Among n-butanol, sec-butanol, and tert-butanol, tert-butanol has the highest CTS energy barrier and the lowest rate constant. Polarizable continuum model (PCM) and conductor-like screening model (COSMO) solvation models were applied to explore chain transfer to n-butanol, MEK and p-xylene from polymer chains of MA, EA and n-BA. The type of mono-radical generated via self-initiation has little or no effect on the capability of MA, EA and n-BA live polymer chains to undergo chain transfer reactions. Energy barriers of the chain transfer to solvent reactions do not change significantly with the length of the live polymer chain. Before this work, although a general mechanism for chain transfer reactions had been presented, no specific mechanisms for different types of chain transfer reactions were proposed. Moreover, before this study it was inconclusive which dead polymer structure was most likely to provide the hydrogen atom during CTP reactions. A macroscopic first-principles mathematical model that represents a batch polymerization reactor in which spontaneous thermal free-radical polymerization of n-butyl acrylate takes place was developed. The model considered polymerization reactions that are most likely to occur. Reaction rate equations were derived using the method of moments. The model was used to gain a better understanding of the role of the monomer in spontaneous initiation of the polymerization. The monomer self-initiation reaction rate constant was estimated from batch-polymerization conversion-measurements at elevated temperatures (>100℗ðC). The rate constant was estimated to be 4.39E-15 M-1 L-1 at 413K, which is comparable with the value (1.04E-14 M-1 L-1) obtained via quantum chemical calculations.
Book Synopsis Modeling and Optimization of High-temperature (140-200°C) N-butyl Acrylate Polymerization by : Congling Quan
Download or read book Modeling and Optimization of High-temperature (140-200°C) N-butyl Acrylate Polymerization written by Congling Quan and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-temperature Free-radical Polymerization of N-butyl Acrylate by : Congling Quan
Download or read book High-temperature Free-radical Polymerization of N-butyl Acrylate written by Congling Quan and published by . This book was released on 2005 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phase-Separated Interpenetrating Polymer Networks by : Yuri S. Lipatov
Download or read book Phase-Separated Interpenetrating Polymer Networks written by Yuri S. Lipatov and published by Springer Science & Business Media. This book was released on 2007-10-23 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series presents critical reviews of the present and future trends in polymer and biopolymer science including chemistry, physical chemistry, physics and materials science. It is addressed to all scientists at universities and in industry who wish to keep abreast of advances in the topics covered. Impact Factor Ranking: Always number one in Polymer Science.
Download or read book Chemical Engineering Progress written by and published by . This book was released on 2005 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Near-Infrared Analysis by : Donald A. Burns
Download or read book Handbook of Near-Infrared Analysis written by Donald A. Burns and published by CRC Press. This book was released on 2007-09-07 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fast, inexpensive, and easy-to-use, near-infrared (NIR) spectroscopy can be used to analyze small samples of virtually any composition. The Handbook of Near Infrared Analysis, Third Edition explains how to perform accurate as well as time- and cost-effective analyses across a growing spectrum of disciplines. Presenting nearly 50% new and re
Book Synopsis Handbook of Polymer Synthesis, Characterization, and Processing by : Enrique Saldivar-Guerra
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 2013-03-04 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.
Book Synopsis Amphiphilic Polymer Co-networks by : Costas S Patrickios
Download or read book Amphiphilic Polymer Co-networks written by Costas S Patrickios and published by Royal Society of Chemistry. This book was released on 2020-04-23 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amphiphilic polymer co-networks (APCNs) are a type of polymeric hydrogel, their hydrophobic polymer segments and hydrophilic components produce less aqueous swelling, giving better mechanical properties than conventional hydrogels. This new class of polymers is attracting increasing attention, resulting in further basic research on the system, as well as new applications. This book focuses on new developments in the field of APCNs, and is organised in four sections: synthesis, properties, applications and modelling. Co-network architectures included in the book chapters are mainly those deriving from hydrophobic macro-cross-linkers, representing the classical approach; however, more modern designs are also presented. Properties of interest discussed include aqueous swelling, thermophysical and mechanical properties, self-assembly, electrical actuation, and protein adsorption. Applications described in the book chapters include the use of co-networks as soft contact lenses, scaffolds for drug delivery and tissue engineering, matrices for heterogeneous biocatalysis, and membranes of controllable permeability. Finally, an important theory chapter on the modelling of the self-assembly of APCNs is also included. The book is suitable for graduate students and researchers interested in hydrogels, polymer networks, polymer chemistry, block copolymers, self-assembly and nanomaterials, as well as their applications in contact lenses, drug delivery, tissue engineering, membranes and biocatalysis.
Download or read book Die Makromolekulare Chemie written by and published by . This book was released on 1984 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitroxides written by Olivier Ouari and published by Royal Society of Chemistry. This book was released on 2021-05-13 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroxides are versatile small organic molecules possessing a stabilised free radical. With their unpaired electron spin they display a unique reactivity towards various environmental factors, enabling a diverse range of applications. They have uses as synthetic tools, such as catalysts or building blocks; imaging agents and probes in biomedicine and materials science; for medicinal antioxidant applications; and in energy storage. Polynitroxides (polymers bearing pendant nitroxide sidechains) have been used in organic radical batteries, oxidation catalysts and in exchange reactions for constructing complex architectures. Chapters in this book cover the synthesis of nitroxides, EPR studies and magnetic resonance applications, physiochemical studies, and applications including in batteries, imaging and organic synthesis. With contributions from leaders in the field, Nitroxides will be of interest to graduate students and researchers across chemistry, physics, biology and materials science.
Book Synopsis Emulsion Polymerisation and Latex Applications by : Christopher D. Anderson
Download or read book Emulsion Polymerisation and Latex Applications written by Christopher D. Anderson and published by iSmithers Rapra Publishing. This book was released on 2003 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term latex covers emulsion polymers, polymer dispersions and polymer colloids. This review report provides a general overview of the emulsion polymerisation processes and explains how the resulting latices are used in industrial applications. The classes of emulsion polymers are surveyed and the commercial technologies and potential future uses discussed. An additional indexed section containing several hundred abstracts from the Polymer Library gives useful references for further reading.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Quantum Chemistry by : Masoud Soroush
Download or read book Computational Quantum Chemistry written by Masoud Soroush and published by Elsevier. This book was released on 2018-10-16 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Quantum Chemistry: Insights into Polymerization Reactions consolidates extensive research results, couples them with computational quantum chemistry (CQC) methods applicable to polymerization reactions, and presents those results systematically. CQC has advanced polymer reaction engineering considerably for the past two decades. The book puts these advances into perspective. It also allows you to access the most up-to-date research and CQC methods applicable to polymerization reactions in a single volume. The content is rigorous yet accessible to graduate students as well as researchers who need a reference of state-of-the-art CQC methods with polymerization applications. Consolidates more than 10 years of theoretical polymerization reaction research currently scattered across journal articles Accessibly presents CQC methods applicable to polymerization reactions Provides researchers with a one-stop source of the latest theoretical developments in polymer reaction engineering
Book Synopsis New Developments on Polymer Structure and Morphology by : H. Höcker
Download or read book New Developments on Polymer Structure and Morphology written by H. Höcker and published by . This book was released on 1984 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Micro- and Nanotechnology in Vaccine Development by : Mariusz Skwarczynski
Download or read book Micro- and Nanotechnology in Vaccine Development written by Mariusz Skwarczynski and published by William Andrew. This book was released on 2016-09-20 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of how use of micro- and nanotechnology (MNT) has allowed major new advance in vaccine development research, and the challenges that immunologists face in making further progress. MNT allows the creation of particles that exploit the inherent ability of the human immune system to recognize small particles such as viruses and toxins. In combination with minimal protective epitope design, this permits the creation of immunogenic particles that stimulate a response against the targeted pathogen. The finely tuned response of the human immune system to small particles makes it unsurprising that many of the lead adjuvants and vaccine delivery systems currently under investigation are based on nanoparticles. Provides a comprehensive and unparalleled overview of the role of micro- and nanotechnology in vaccine development Allows researchers to quickly familiarize themselves with the broad spectrum of vaccines and how micro- and nanotechnologies are applied to their development Includes a combination of overview chapters setting out general principles, and focused content dealing with specific vaccines, making it useful to readers from a variety of disciplines
Download or read book Engineered Materials Abstracts written by and published by . This book was released on 1993-04 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: