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Kinetics Of Free Radical Homo And Copolymerisations Investigated With Pulsed Laser Methods
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Book Synopsis Kinetics of Free Radical Homo- and Copolymerisations Investigated with Pulsed Laser Methods by : Enno Meyer
Download or read book Kinetics of Free Radical Homo- and Copolymerisations Investigated with Pulsed Laser Methods written by Enno Meyer and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free-radical polymerisation is the most important polymerisation process due to its simplicity and robustness. It is therefore necessary to understand the kinetics of the involved reactions in order to plan a polymerisation, be it on lab scale or industrial scale. Three different topics are investigated in this thesis: First, the copolymerisation of styrene (Sty) with maleic anhydride (MAn) which is interesting from a kinetic standpoint because MAn does not homopolymerise. Thus, several reaction steps can be neglected and the kinetic treatment is simplified. By using the Single-pulse pulsed...
Book Synopsis Radical Polymerization Kinetics in Aqueos Solution and in Systems with Secondary and Tertiary Radicals Studied by Novel Pulsed-laser Techniques by : Pascal Hesse
Download or read book Radical Polymerization Kinetics in Aqueos Solution and in Systems with Secondary and Tertiary Radicals Studied by Novel Pulsed-laser Techniques written by Pascal Hesse and published by Cuvillier Verlag. This book was released on 2008 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Termination Kinetics of Radical Homo- and Copolymerizations Studied via Time-Resolved EPR Spectroscopy by : Lara Riemann
Download or read book Termination Kinetics of Radical Homo- and Copolymerizations Studied via Time-Resolved EPR Spectroscopy written by Lara Riemann and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides an in-depth investigation into the chain-length dependent termination kinetics of radical homo- and copolymerization by using the most powerful method: single pulse-pulsed laser polymerization (SP-PLP) in conjunction with electron paramagnetic resonance (EPR) spectroscopy. In combination with the kinetic simulation package PREDICI®, more detailed insights into the complex copolymerization kinetics were obtained. For the first time, the composite parameters for the radical homopolymerization of n-pentyl methacrylate (PnMA) in bulk were determined over a wide temperature ...
Book Synopsis Free Radical Polymerization Kinetics by : Devon A. Shipp
Download or read book Free Radical Polymerization Kinetics written by Devon A. Shipp and published by . This book was released on 1998 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel Single Pulse by : Thomas Junkers
Download or read book Novel Single Pulse written by Thomas Junkers and published by . This book was released on 2006 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radical Polymerization Kinetics of Non-Ionized and Fully-Ionized Monomers Studied by Pulsed-Laser EPR by : Hendrik Kattner
Download or read book Radical Polymerization Kinetics of Non-Ionized and Fully-Ionized Monomers Studied by Pulsed-Laser EPR written by Hendrik Kattner and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The radical polymerization kinetics of non-ionized and fully-ionized monomers in organic and aqueous solution was investigated by SP-PLP-EPR, i.e., highly time-resolved single-pulse-pulsed-laser-polymerization (SP-PLP) in conjunction with electron paramagnetic resonance (EPR) spectroscopy. Dicumyl peroxide as the photoinitiator allowed for investigations into the chain-length dependence of the termination rate coefficient, kt, of styrene bulk polymerization. The Composite Model perfectly represents the chain-length-dependence of kt for styrene and for all other monomers studied within the p ...
Book Synopsis Radical Polymerization Kinetics in Systems with Transfer Reactions Studied by Pulsed-laser-polymerization and Online EPR-Detection by : Johannes Barth
Download or read book Radical Polymerization Kinetics in Systems with Transfer Reactions Studied by Pulsed-laser-polymerization and Online EPR-Detection written by Johannes Barth and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Kinetics of Free Radical Polymerization by : Alastair M. North
Download or read book The Kinetics of Free Radical Polymerization written by Alastair M. North and published by Pergamon. This book was released on 1966 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radical Polymerization: Kinetics and Mechanism by : Michael Buback
Download or read book Radical Polymerization: Kinetics and Mechanism written by Michael Buback and published by . This book was released on 2006 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Free Radical Copolymerization of Hydroxy-functional Monomers by : Kun Liang
Download or read book Free Radical Copolymerization of Hydroxy-functional Monomers written by Kun Liang and published by . This book was released on 2013 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acrylic resins used as polymeric binders in automotive coatings are complex copolymers containing reactive functional (often hydroxyl) groups. A better understanding of the copolymerization kinetics of these monomers is required in order to ensure uniform distribution of the functional groups among the polymer chains over the course of production. Free radical copolymerization propagation kinetics of styrene (ST) with 2-hydroxyethyl methacrylate (HEMA) and 2-hydroxyethyl acrylate (HEA) have been investigated both in bulk and solution, using pulsed-laser polymerization (PLP) combined with size exclusion chromatography (SEC) and proton NMR. All of the solvents examined (n-butanol, toluene and DMF) affect ST/HEMA copolymer composition relative to bulk polymerization, while the effects on propagation rates suggest that hydrogen bonding interactions need to be explicitly considered. Semibatch reactions of ST/HEMA, butyl acrylate (BA)/HEMA and butyl methacrylate (BMA)/HEMA have been carried out in xylene, DMF and 1-pentanol at 110 and 138 °C. The variation in monomer composition for the three solvents agrees with the kinetic studies. It was found that polymer molecular weight is strongly affected by solvent choice and operating conditions, partially due to branching reactions caused by impurities from commercial HEMA monomers. PLP and 13C-NMR analysis indicate that no backbiting occurred during polymerization of HEA, and it is shown that H-bonding disrupts the backbiting mechanism found for other acrylates. Thus, semibatch production in n-butanol can reduce branching and increase molecular weight of BA homopolymers by a factor of five compared to polymerization in xylene.
Book Synopsis Free-Radical Polymerization: Kinetics and Mechanism by : Michael Buback
Download or read book Free-Radical Polymerization: Kinetics and Mechanism written by Michael Buback and published by Wiley-VCH. This book was released on 2002-09-09 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past 15 years, free-radical polymerization has undergone a dramatic revitalization. "Living polymerization," ATRP (atomic transfer radical polymerization) and RAFT (reversible addition-fragmentation chain-transfer) polymerization have come to dominate research in this area. Powerful experimental and analytical techniques are now used to probe the basic kinetics and mechanisms of the processes involved. High degrees of control over physical and chemical properties have lead to more efficient polymer production and new products. The state of the art in all these areas was presented and discussed at the IUPAC-sponsored "International Symposium on Free-Radical Polymerization: Kinetics and Mechanism" (SML '01) held in IL Ciocco, Italy, in June 2001. This volume of Macromolecular Symposia presents an excellent overview of modern research in free-radical polymerization.
Book Synopsis Radical Polymerization: Kinetics and Mechanism by :
Download or read book Radical Polymerization: Kinetics and Mechanism written by and published by Cuvillier Verlag. This book was released on 2006-08-22 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Kinetics of Free Radical Copolymerisation Reactions by : Alias Al-Bayati
Download or read book Kinetics of Free Radical Copolymerisation Reactions written by Alias Al-Bayati and published by . This book was released on 1996 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physical and mechanical properties of copolymers are functions of their composition, molecular weight and sequence structure. In copolymerisation systems, run in a batch reactor under isothermal conditions, in which the reactivities of the participating monomers differ from each other the composition, molecular weights and the sequence structure of the polymers formed will become functions of the extent of conversion. Since for practical application, it is generally desired to prepare uniform copolymers, controlling the factors influencing copolymer homogeneity is of paramount importance. The overall objective of this work was to establish a mathematical model and a control strategy which would allow the production of a homogeneous copolymer of desired composition in a batch reactor at any level of conversion. The system selected for the study is of commercial and academic interest. Nevertheless, the proposed model and control algorithm is quite general and can be applied to any reacting system for which a kinetic model exists. To achieve the overall objective, the following aims were fulfilled: (i) Mathematical modelling and digital computer simulation of batch copolymerisation over the entire conversion range. (ii) Mathematical modelling and simulation of the proposed control strategy and investigation of the sensitivity and selectivity of the strategy. (iii) Analysis of the experimental results and their comparison with the computer predictions. The work was divided into two parts: i) computer studies and ii) experimental studies of the process. The system selected for these studies was free radical copolymerisation of vinyl acetate and 2 ethylhexyl acrylate initiated by AIBN in ethyl acetate solution Monomer reactivity ratios, (MRR's) were determined using gas chromatography measurements of monomer loss during the reaction. The computer studies indicated that the control was dynamic, stable and effective in maintaining a desired monomer mixture composition throughout the course of reaction. A new method of deriving MRR's from the experimental data in multicomponent copolymerisation. As analytical solution of the multicomponent copolymer.
Book Synopsis Polymeric Dispersions: Principles and Applications by : J.M. Asua
Download or read book Polymeric Dispersions: Principles and Applications written by J.M. Asua and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive and up to date survey of the science and technology of polymeric dispersions. The book discusses the kinetics and mechanisms of polymerization in dispersed media, examines the processes controlling particle morphology, presents both off-line and on-line methods for the characterization of polymer colloids, considers reactor engineering and control, and covers a wide variety of applications, such as latex paint formulations, encapsulation of inorganic particles, reactive latexes, adhesives, paper coating, and biomedical and pharmaceutical applications. Audience: A valuable resource for scientists and engineers, academic and industrial, who are involved in the manufacture or application of polymeric dispersions.
Book Synopsis Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards by :
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2006 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theses on any subject submitted by the academic libraries in the UK and Ireland.
Book Synopsis Atlas of Plastics Additives by : Dietrich O. Hummel
Download or read book Atlas of Plastics Additives written by Dietrich O. Hummel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: A must for experts in industry, this book describes the application of vibrational (FTIR, UV, Raman) and mass spectrometries and other instrumental techniques for identification and structure elucidation of plastics additives. Numerous tables and figures compress the state of the art.
Book Synopsis Introduction to Polymer Science and Technology by :
Download or read book Introduction to Polymer Science and Technology written by and published by Bookboon. This book was released on with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:
