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Author : Japan Society of Polymer Processing
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.:/5 (5 download)
Download or read book Polymer-supercritical Fluid Systems and Foams (P-(SF)2) written by Japan Society of Polymer Processing and published by . This book was released on 2003 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ernesto Di Maio
Publisher : Elsevier
ISBN 13 : 0444637362
Total Pages : 486 pages
Book Rating : 4.4/5 (446 download)
Download or read book Foaming with Supercritical Fluids written by Ernesto Di Maio and published by Elsevier. This book was released on 2021-11-06 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foaming with Supercritical Fluids, Volume Nine provides a comprehensive description of the use of supercritical fluids as blowing agents in polymer foaming. To this aim, the fundamental issues on which the proper design and control of this process are rooted are discussed in detail, with specific attention devoted to the theoretical and experimental aspects of sorption thermodynamics of a blowing agent within a polymer, the effect of the absorbed blowing agent on the thermal, interfacial and rheological properties of the expanding matter, and the phase separation of the gaseous phase, and of the related bubble nucleation and growth phenomena. Several foaming technologies based on the use of supercritical blowing agents are then described, addressing the main issues in the light of the underlying chemical-physical phenomena. Offers strong fundamentals on polymer properties important on foaming Outlines the use of supercritical fluids for foaming Covers theoretical points-of-view, including foam formation of the polymer/gas solution to the setting of the final foam Discusses the several processing technologies and applications
Author : Vannessa Goodship
Publisher : iSmithers Rapra Publishing
ISBN 13 : 9781859574942
Total Pages : 152 pages
Book Rating : 4.5/5 (749 download)
Download or read book Polymer Processing with Supercritical Fluids written by Vannessa Goodship and published by iSmithers Rapra Publishing. This book was released on 2005 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: SCFs are currently the subjects of intense research and commercial interest. Applications such as the RESS (rapid expansion of supercritical fluid solutions) process are part of standard industrial practice. In view of their ever-growing importance in the polymer industry there is a need to fully comprehend how supercritical fluids interrelate with polymeric materials to realise the potential that can be gained from their use. The authors review the basic principles of SCFs and their application within the polymer industry: characteristics and properties, extraction of unwanted residual products, polymerisation solvents, and polymer impregnation. Processing applications such as plasticisation, foaming and blending are also considered. There is discussion of the potential within the polymer recycling industry for use of SCFs as cleaning agents or within supercritical oxidation processes. Around 400 references with abstracts from recent global literature accompany this review, sourced from the Polymer Library, to facilitate further reading. A subject index and a company index are included.
Author : E. Kiran
Publisher : Springer Science & Business Media
ISBN 13 : 9401139296
Total Pages : 602 pages
Book Rating : 4.4/5 (11 download)
Download or read book Supercritical Fluids written by E. Kiran and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical fluids are neither gas nor liquid, but can be compressed gradually from low to high density and they are therefore interesting and important as tunable solvents and reaction media in the chemical process industry. By adjusting the density the properties of these fluids can be customised and manipulated for a given process - physical or chemical transformation. Separation and processing using supercritical solvents such as CO2 are currently on-line commercially in the food, essential oils and polymer industries. Many agencies and industries are considering the use of supercritical water for waste remediation. Supercritical fluid chromatography represents another, major analytical application. Significant advances have recently been made in materials processing, ranging from particle formation to the creation of porous materials. The chapters in this book provide tutorial accounts of topical areas centred around: (1) phase equilibria, thermodynamics and equations of state; (2) critical behaviour, crossover effects; (3) transport and interfacial properties; (4) molecular modelling, computer simulation; (5) reactions, spectroscopy; (6) phase separation kinetics; (7) extractions; (8) applications to polymers, pharmaceuticals, natural materials and chromatography; (9) process scale-up.
Author : Ya-Ping Sun
Publisher : CRC Press
ISBN 13 : 0824744713
Total Pages : 597 pages
Book Rating : 4.8/5 (247 download)
Download or read book Supercritical Fluid Technology in Materials Science and Engineering written by Ya-Ping Sun and published by CRC Press. This book was released on 2002-03-26 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title analyzes the chemical reactions, structures and fundamental properties of supercritical fluid systems for the production of new compounds, nanomaterials, fibers, and films. It complies contemporary research and technological advances for increased selectivity and reduced waste in chemical, industrial, pharmaceutical, and biomedical applications. Topics include fluid dynamics, catalysis, hydrothermal synthesis, surfactants, conducting polymers, crystal growth, and other aspects and applications of supercritical fluids.
Author : Xiaochu Wang
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (174 download)
Download or read book The Effect of Supercritical Fluid on Polymer Systems written by Xiaochu Wang and published by . This book was released on 2007 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Great interest has been directed toward the study of polymer thin films recently due to their emerging applications, and appreciable deviated properties and phenomena as compared with bulk polymers. Carbon dioxide (CO2) has received attention as an environmentally benign alternative to hazardous industrial solvents. Unlike conventional liquid solvents, the density and hence the solvent strength of supercritical CO2 can be tuned by small variations in pressure, temperature or both. The objective of this work is to study the interaction between high pressure CO2 and polymer systems. We introduced the methodology used in this dissertation. The combination of gradient theory of inhomogeneous systems and Sanchez-Lacombe Equation of State is used to calculate the interfacial properties, such as interfacial density profile, interfacial tension and interfacial thickness. We first investigated the adsorption of supercritical fluid on polymer surfaces. We showed analytically that surface adsorption of high pressure fluid on an attractive surface is proportional to the compressibility of the fluid. We have also investigated numerically the sorption of supercritical CO2 on poly(dimethylsiloxane) (PDMS) and polyisobutylene (PIB), and supercritical 1,1-difluorethane on PS. By calculating the Gibbs adsorption and adsorption layer thickness of the supercritical fluids, we found in all cases that maximum adsorption occurred when the supercritical fluid was near its compressibility maximum. We then examined the compatibilization effect of supercritical fluid on two incompatible polymers. We calculated the interfacial density profile, interfacial thickness and interfacial tension between the two polymers with and without the supercritical fluid. We found that the interfacial tension was decreased and the interfacial thickness was increased with high pressure super-critical fluid for the ternary systems we have investigated. No enhancement or deleterious effects on compatibilization were observed as the critical point was approached and the compressibility became large. We also examined the morphological structures of asymmetric poly(ethylene oxide)-b-poly(1,1'-dihydroperflurooctyl methacrylate) (PEO-b-PFOMA) thin films upon annealing in supercritical CO2. The strong affinity between PFOMA and CO2 was found to induce phase segregation when annealing PEO-b-PFOMA films as compared with vacuum at the same temperature.
Author : S.-T. Lee
Publisher : CRC Press
ISBN 13 : 1439898596
Total Pages : 636 pages
Book Rating : 4.4/5 (398 download)
Download or read book Foam Extrusion written by S.-T. Lee and published by CRC Press. This book was released on 2014-04-07 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining the science of foam with the engineering of extrusion processes, Foam Extrusion: Principles and Practice delivers a detailed discussion of the theory, design, processing, and application of degradable foam extraction. In one comprehensive volume, the editors present the collective expertise of leading academic, research, and industry specialists while laying the scientific foundation in such a manner that the microscopic transition from a nucleus to a void (nucleation) and macroscopic movement from a void to an object (formation) are plausibly addressed. To keep pace with significant improvements in foam extrusion technology, this Second Edition: Includes new chapters on the latest developments in processing/thermal management, rheology/melt strength, and biodegradable and sustainable foams Features extensive updates to chapters on extrusion equipment, blowing agents, polyethylene terephthalate (PET) foam, and microcellular innovation Contains new coverage of cutting-edge foaming mechanisms and technology, as well as new case studies, examples, and figures Capturing the interesting evolution of the field, Foam Extrusion: Principles and Practice, Second Edition provides scientists, engineers, and product development professionals with a modern, holistic view of foam extrusion to enhance research and development and aid in the selection of the optimal screw, die design, and foaming system.
Author : Manouchehr Daneshvar
Publisher :
ISBN 13 :
Total Pages : 342 pages
Book Rating : 4.:/5 (231 download)
Download or read book High Pressure Phase Equilibria of Highly Asymmetric Polymer-supercritical Fluid Systems written by Manouchehr Daneshvar and published by . This book was released on 1989 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Eaves
Publisher : iSmithers Rapra Publishing
ISBN 13 : 1859573886
Total Pages : 304 pages
Book Rating : 4.8/5 (595 download)
Download or read book Handbook of Polymer Foams written by David Eaves and published by iSmithers Rapra Publishing. This book was released on 2004 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Handbook reviews the chemistry, manufacturing methods, properties and applications of the synthetic polymer foams used in most applications. In addition, a chapter is included on the fundamental principles, which apply to all polymer foams. There is also a chapter on the blowing agents used to expand polymers and a chapter is on microcellular foams - a relatively new development where applications are still being explored.
Author : Chris Defonseka
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110639793
Total Pages : 193 pages
Book Rating : 4.1/5 (16 download)
Download or read book Two-Component Polyurethane Systems written by Chris Defonseka and published by Walter de Gruyter GmbH & Co KG. This book was released on 2019-05-20 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thanks to their unique physico-chemical nature, two-component polyurethane (PU) systems have found widespread industrial application. This book gives practical guidance on the selection of raw materials and machinery, as well as the calculations and formulations necessary for the successful production and processing of two-component PUs. Readers will benefit from the troubleshooting advice based on the author's extensive industry experience.
Author : Jae-Jin Shim
Publisher :
ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.:/5 (27 download)
Download or read book Thermodynamics and phase equilibria of polymer-solute-supercritical fluid systems by supercritical fluid chromatography written by Jae-Jin Shim and published by . This book was released on 1990 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jane Osborne
Publisher : Nova Science Publishers
ISBN 13 : 9781633219304
Total Pages : 0 pages
Book Rating : 4.2/5 (193 download)
Download or read book Handbook on Supercritical Fluids written by Jane Osborne and published by Nova Science Publishers. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical fluid carbon dioxide (sc-CO2) possesses both gas-like and liquid-like properties. It is capable of depositing nanoparticles in small structures and poorly wettable substrates. Deposition and array formation of metal and metal sulphide nanoparticles on various substrates using sc-CO2 as a medium has been a subject of considerable interest for researchers in nanomaterials area in recent years. This handbook begins by exploring nanoparticle deposition using supercritical fluid carbon dioxide. Further topics in this handbook include separation of oils using supercritical carbon dioxide; the application of an integrated supercritical extraction and impregnation process for incorporation of thyme extracts into different carriers; supercritical fluid extraction application on dairy products and by-products; and supercritical fluid technology applications in pharmaceutical drug formulations.
Author : Srinivas Siripurapu
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (527 download)
Download or read book Blend- and Surface-assisted Foaming of Polymers with Supercritical Carbon Dioxide written by Srinivas Siripurapu and published by . This book was released on 2003 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: polymer surfactants, polymer blends, high pressure rheology, controlled foam nucleation, carbon dioxide, nanoporous polymers, microcellular foam, supercritical fluids.
Author : Antonio Montes
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Foaming¬†+¬†Impregnation One-Step Process Using Supercritical CO2 written by Antonio Montes and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers are widely used in everyday life due to their properties as toughness, viscoelasticity, and the possibility to form glasses and semicrystalline structures. For that reason, it is used in mostly drug delivery systems and tissue engineering and in pharmaceutical and biomedical investigations. Foaming process allows creating porous structure into the polymer leading to scaffolds. Scaffolds are the focus of many investigations as prolonged drug delivery systems and implants or injections which are used to deliver cells, drugs, and genes into the body. Particulate leaching, freeze-drying, thermally induced phase separation, rapid prototyping, powder compaction, sol,Äìgel, and melt molding are the main techniques in front of supercritical fluid technology to prepare scaffolds. Supercritical foaming process using CO2 presents advantages as a high dissolution in polymers and a green process because CO2 is nontoxic, inexpensive, and reusable. Moreover, supercritical technology allows to do an impregnation with an active substance together with the foaming at the same time. Thus active substances entrapped into scaffolds could be fabricated in a one-step green process.
Author : Charles W. Haschets
Publisher :
ISBN 13 :
Total Pages : 420 pages
Book Rating : 4.:/5 (282 download)
Download or read book Phase Behavior of Polymer written by Charles W. Haschets and published by . This book was released on 1992 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ya-Ping Sun
Publisher : CRC Press
ISBN 13 : 9781135557331
Total Pages : 600 pages
Book Rating : 4.5/5 (573 download)
Download or read book Supercritical Fluid Technology in Materials Science and Engineering written by Ya-Ping Sun and published by CRC Press. This book was released on 2002-03-26 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title analyzes the chemical reactions, structures and fundamental properties of supercritical fluid systems for the production of new compounds, nanomaterials, fibers, and films. It complies contemporary research and technological advances for increased selectivity and reduced waste in chemical, industrial, pharmaceutical, and biomedical applications. Topics include fluid dynamics, catalysis, hydrothermal synthesis, surfactants, conducting polymers, crystal growth, and other aspects and applications of supercritical fluids.
Author : Christian Wohlfarth
Publisher : CRC Press
ISBN 13 : 9780849332463
Total Pages : 672 pages
Book Rating : 4.3/5 (324 download)
Download or read book CRC Handbook of Thermodynamic Data of Polymer Solutions at Elevated Pressures written by Christian Wohlfarth and published by CRC Press. This book was released on 2005-01-27 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides the only complete collection of high-pressure thermodynamic data pertaining to polymer solutions at elevated pressures to date of all critical data for understanding the physical nature of these mixtures and applicable to a number of industrial and laboratory processes in polymer science, physical chemistry, chemical engineering, and biotechnology. In response to the increasing commercial interest due to the physico-chemical properties of these solutions, the CRC Handbook of Thermodynamic Data of Polymer Solutions at Elevated Pressures compiles information on experimental data from hundreds of primary journal articles, dissertations, and other papers into a single source entirely devoted to polymer solutions. The book contains data on vapor-liquid equilibria and gas solubilities, liquid–liquid equilibria, high-pressure fluid phase equilibria for polymer systems in supercritical fluids, enthalpic and volumetric data, and second virial coefficients, all at elevated pressures. An excellent companion to the author’s previous publications, the CRC Handbook of Thermodynamic Data of Copolymer Solutions and the CRC Handbook of Thermodynamic Data of Aqueous Polymer Solutions, this handbook contains reliable, easy-to-use entries, references, tables, examples, and appendices that provide students, professors, and researchers with a well-organized, quick route to the data they need. The CRC Handbook of Thermodynamic Data of Polymer Solutions at Elevated Pressures is a staple resource for all university libraries as well as private laboratories, particularly for researchers, academics, and engineers who handle polymer systems in supercritical fluids, material science applications such as computerized predictive packages, and chemical and biochemical processes, such as synthesis and characterization, fractionation, separation, purification, and finishing of polymers and related materials. _ CRC Handbook of Thermodynamic Data of Polymer Solutions, Three Volume Set CRC Handbook of Thermodynamic Data of Aqueous Polymer Solutions CRC Handbook of Thermodynamic Data of Copolymer Solutions
