Analysis Of Oligomers Formed During Emulsion Polymerization Processes Using High Performance Liquid Chromatography
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Analysis Of Oligomers Formed During Emulsion Polymerization Processes Using High Performance Liquid Chromatography
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Author : Janet T. Eleveld
language : en
Publisher:
Release Date : 1993
Analysis Of Oligomers Formed During Emulsion Polymerization Processes Using High Performance Liquid Chromatography written by Janet T. Eleveld and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Emulsion Polymerization And Emulsion Polymers
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Author : Peter A. Lovell
language : en
Publisher: John Wiley & Sons
Release Date : 1997-04-03
Emulsion Polymerization And Emulsion Polymers written by Peter A. Lovell and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-04-03 with Science categories.
Emulsion Polymerization and Emulsion Polymers Edited by Peter A. Lovell Manchester Materials Science Centre, UMIST, Manchester, UK and Mohamed S. El-Aasser Emulsion Polymers Institute and Department of Chemical Engineering, Lehigh University, Bethlehem, PA, USA Emulsion polymerization is a technologically and commercially important reaction used to produce synthetic polymers and latexes for a wide range of applications. It is the basis of a massive global industry that is expanding due to the versatility of the reaction and the greater realization of the ability to control properties of the polymer latexes produced. Emulsion Polymerization and Emulsion Polymers provides an up-to-date treatment of both academic and industrial aspects of the subject in a single self-contained volume. Established knowledge is integrated with latest developments and introductory chapters to give a state-of-the-art summary which is also suitable as a broad based introduction to the field. The individual chapters have been written by specialists from academia and industry and are presented in a way which ensures that the book will be of equal value to experienced researchers and students.
Effects Of Agitation In Emulsion Polymerization
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Author : Jinmo Hong
language : en
Publisher: ProQuest
Release Date : 2008
Effects Of Agitation In Emulsion Polymerization written by Jinmo Hong and has been published by ProQuest this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
In emulsion polymerization, agitation plays a significant role in the nucleation of polymer particles, the subsequent growth of these polymer particles, as well as coagulum formation. The emulsion copolymerization of n -butyl methacrylate (BMA) and N-methylolacrylamide (NMA) was investigated in a 2 L reactor via a two step process in which a seed of poly(n-butyl methacrylate) was initially formed (5% solids) and then BMA and NMA were fed semicontinuously to produce a 41% solids latex. Polymerization was carried out with sodium lauryl sulfate (SLS) as surfactant and potassium persulfate (KPS) as initiator using different types and diameters of impellers at various rotational speeds, resulting in different mixing and shear effects in the fluid. Particle diameters were characterized by DLS and CHDF. The evolution of the amount of coagulum in the bulk (latex) and on the wall surfaces (impeller/shaft/baffles) was studied via power input under different agitation conditions. Also, the effect of particle deposition on coagulum formation was studied with surface-modified impellers (Teflon/glass/stainless steel). It was found that coagulum formation increased with time, impeller speed, and impeller type (i.e., radial, radial/axial, and axial flow impellers). Most of the coagulum was formed on the impeller, shaft, and baffles. The evolution of the amount of coagulum in the latex increased non-linearly with increasing power, while the total amount of coagulum increased linearly with power. Different coagulum formation mechanisms were considered. One is coagulum formation in the bulk latex, which is caused by particle-particle interactions, while the other is coagulum formation on the wall surfaces which results from both particle-wall and particle-particle interactions on the particles comprising the coagulum. In the process of studying the evolution of coagulum formation during this reaction, scanning electron microscopy was applied to examine the coagulum found in the latex and on the surfaces of the reactor. Unexpectedly, large (micron size) hollow microspheres were found on the surfaces of the impeller and baffles during the seed stage. Subsequently, the mechanism of formation of these microspheres was investigated, not only in terms of their morphology, but also the molecular weight of the polymer formed. Coagulum recovered from the latex was found to have a molecular weight similar to the latex itself; however, coagulum formed on the reactor insert surfaces (i.e., impeller/shaft/baffles) had a significantly higher molecular weight. Three questions were addressed: (1) how were the hollow microspheres formed; (2) was the formation of microspheres unique to this system; and (3) can the hollow microspheres be intentionally fabricated. Detailed discussion of these questions is presented with the mechanism of formation of hollow microspheres.
Cumulated Index Medicus
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Author :
language : en
Publisher:
Release Date : 2000
Cumulated Index Medicus written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Medicine categories.
Drexel Polymer Notes
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Author :
language : en
Publisher:
Release Date : 1990
Drexel Polymer Notes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Polymers categories.
Renewable Polymers
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Author : Marc A. Dubé
language : en
Publisher: MDPI
Release Date : 2020-04-22
Renewable Polymers written by Marc A. Dubé and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-22 with Technology & Engineering categories.
The utilization of bio-resourced macromolecules for polymer applications has been the subject of increasing interest, mainly for sustainability and functionality reasons. This Special Issue of Processes brings together nine papers from leading scientists and researchers active in the area of “Sustainable and Renewable Polymers, Processing, and Chemical Modifications”. The collected papers include seven original research and two review articles related to renewable feedstock for polymer applications, processes for the fabrication of renewable polymer-based nanomaterials, the design and modification of renewable polymers, and applications of renewable polymers. The journal Processes will continue to nurture progress in this field through its position as an open access platform.
Semi Continuous Emulsion Copolymerization Of Styrene Butyl Acrylate With Methacrylic Acid
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Author : Hong Hua
language : en
Publisher:
Release Date : 2008
Semi Continuous Emulsion Copolymerization Of Styrene Butyl Acrylate With Methacrylic Acid written by Hong Hua and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Adhesion categories.
Polymer Particles
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Author : Masayoshi Okubo
language : en
Publisher: Springer Science & Business Media
Release Date : 2005-02-10
Polymer Particles written by Masayoshi Okubo and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-02-10 with Technology & Engineering categories.
In this special volume on polymer particles, recent trends and developments in the synthesis of nano- to micron-sized polymer particles by radical polymerization (Emulsion, Miniemulsion, Microemulsion, and Dispersion Polymerizations) of vinyl monomers in environmentally friendly heterogeneous aqueous and supercritical carbon dioxide fluid media are reviewed by prominent worldwide researchers. In addition to the important challenges and possibilities with regards to design and preparation of functionalized polymer particles of controlled size, the topics described are of great current interest due to the increased awareness of environmental issues.
Encyclopedia Of Polymer Science And Engineering Emulsion Polymerization To Fibers Manufacture
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Author : Herman F. Mark
language : en
Publisher: Wiley-Interscience
Release Date : 1986-11-11
Encyclopedia Of Polymer Science And Engineering Emulsion Polymerization To Fibers Manufacture written by Herman F. Mark and has been published by Wiley-Interscience this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-11-11 with Science categories.
Entirely rewritten, this multi-volume work has been expanded to reflect the vast changes that have occurred in polymer and plastics technology over the past 20 years. After the initial volume (A to Amorphous Polymers), 16 more volumes have been published, four in each calendar year, 1985 through 1988, and a supplement and an index volume were published in the first half of 1989.
Thermal Methods Of Polymer Analysis
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Author : T.R Crompton
language : en
Publisher: Smithers Rapra
Release Date : 2013-01-29
Thermal Methods Of Polymer Analysis written by T.R Crompton and has been published by Smithers Rapra this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-29 with Science categories.
This book reviews the various thermal methods used for the characterisation of polymer properties and composition. All these methods study the properties of polymers as they change with temperature. The methods discussed in this book are: differential photocalorimetry, differential scanning calorimetry, dielectric thermal analysis, differential thermal analysis, dynamic mechanical analysis, evolved gas analysis, gas chromatography, gas chromatography combined with mass spectrometry, mass spectrometry, microthermal analysis, thermal volatilisation, thermogravimetric analysis and thermomechanical analysis. Each technique is discussed in detail and examples of the use of each technique are also given. Each chapter has an extensive list of references so that the reader can follow up topics of interest. This book will be a useful reference for those who already use any of these thermal methods but will also be of interest to undergraduates and those who are just starting to use these techniques.