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Author : Gilles M. Dorris
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (358 download)
Download or read book Characterization of Low Energy Surfaces by Inverse Gas Chromatography written by Gilles M. Dorris and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arno W. Hefer
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (125 download)
Download or read book Bitumen Surface Energy Characterization by Inverse Gas Chromatography written by Arno W. Hefer and published by . This book was released on 2007 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern surface energy theory has been identified in recent years as an attractive tool by which to select compatible bitumen-aggregate combinations. In addition, this approach offers the potential to quantitatively assess moisture susceptibility of these material combinations. The success of implementing this technology depends on the availability of techniques that allow efficient and reliable surface energy characterization of the materials under consideration. This paper focuses on bitumen surface energy characterization employing inverse gas chromatography (IGC). The authors report detail column preparation and test methodologies, and provide a precision statement for this technique. Analysis procedures and results presented demonstrate successful application of this technique with modern thermodynamic theory to acquire bitumen surface energy components. The technique allows testing at different temperatures and results are in agreement with conceptual and theoretical expectations. Surface energies derived from IGC compare reasonably well with mechanical surface tension values from the literature. Results suggest that surface energies do not vary considerably between different bitumen types, indicative of the controlling role of aggregate type in bitumen-aggregate adhesion.
Author : P. Somasundaran
Publisher : CRC Press
ISBN 13 : 9780849396038
Total Pages : 1014 pages
Book Rating : 4.3/5 (96 download)
Download or read book Encyclopedia of Surface and Colloid Science written by P. Somasundaran and published by CRC Press. This book was released on 2006 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shiva Mohammadi-Jam
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (979 download)
Download or read book An Investigation Into the Applicability of Inverse Gas Chromatography to Mineral Flotation written by Shiva Mohammadi-Jam and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Surface energy is a fundamental thermodynamic characteristic of solids, which governs surface interactions. Surface energy measurements have attracted the attention of researchers in a wide variety of fields due to its importance in physicochemical reactions. Inverse gas chromatography (IGC) is a technique that has been applied to the characterisation of solid surfaces for more than 40 years. It is an analytical technique for evaluating physicochemical properties of materials, including surface energy. The most attractive advantage of the IGC method is its capacity to accurately characterise the surface, and some bulk, properties of materials of various shapes such as powders, particulates, fibres, and films. The technique has been recently expanded to determine the surface energetic heterogeneity of surfaces, which is a useful parameter for characterizing complex surfaces.Mineral flotation is dependent upon the hydrophilic or hydrophobic characteristic of particles. Surface energy of valuable and gangue minerals plays an important role in the separation process. In other words, the nature and quantity of the excess energies on the surface of ore components has a decisive role in flotation process. Therefore, knowing the surface physicochemical characteristics and their overall reactivity of minerals is useful in understanding the fundamentals of flotation.This thesis investigates the potential of applying IGC to mineral flotation. Preliminary examinations were undertaken to measure the surface energy of quartz (a hydrophilic mineral) using IGC, and to evaluate the flotation recovery by microflotation tests. The surface energetics of different size ranges of quartz, pre- and post-conditioning with dodecylamine, were determined. The surface chemistry and energetics of the most abundant sulphide mineral (pyrite) was also studied using microflotation experiments and surface characterisation techniques: X-ray photoelectron spectroscopy (XPS) and IGC. The sample's surface characteristics were altered by surface activation with copper to activate the pyrite surface for hydrophobic collector adsorption. The activated and non-activated pyrite was also conditioned with potassium amyl xanthate, a common collector for sulphide minerals. The activation and conditioning processes were conducted at different pH values, which provided an opportunity to evaluate the sensitivity of IGC to the surface alterations. Combining flotation results and IGC measurements, it was verified that the methodology was capable of reliably determining the surface energetics of pure minerals, and the relationship to flotation response. It was shown that a lower surface energy implies a lower degree of hydrophilicity and work of adhesion to water. Meanwhile, it was possible to determine the surface energy heterogeneity profile of minerals, which has been a difficult challenge with conventional techniques. Surface energy heterogeneity is generated as a result of the distribution of surface sites of different energetic levels. It was revealed that surface modification made the surface of mineral particles more homogeneous, as well as decreasing the surface energy.These findings suggested that the prediction of flotation recovery of pure minerals could be possible by surface characterisation using IGC. The research was extended to a more complicated system: the bench scale flotation of a real ore. It was observed that the floatability of the sulphide ore was directly related to surface energy values. The species with lowest surface energy floated first, and with increasing flotation time, the particles with more energetic surfaces appeared in the overflow. The work of adhesion values, also obtained from IGC analyses, confirmed the same relationship. However, the tailings showed relative low values of surface energy, despite apparent high wettability. The phenomenon was attributed to the high content of coarser particles in the tailings, and hydrodynamic effects." --
Author : Douglas R. Lloyd
Publisher : Washington, DC : American Chemical Society
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.:/5 (44 download)
Download or read book Inverse Gas Chromatography written by Douglas R. Lloyd and published by Washington, DC : American Chemical Society. This book was released on 1989 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard A. Storey
Publisher : John Wiley & Sons
ISBN 13 : 1119970172
Total Pages : 557 pages
Book Rating : 4.1/5 (199 download)
Download or read book Solid State Characterization of Pharmaceuticals written by Richard A. Storey and published by John Wiley & Sons. This book was released on 2011-03-31 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of solid state characterization is central to the pharmaceutical industry, as drug products are, in an overwhelming number of cases, produced as solid materials. Selection of the optimum solid form is a critical aspect of the development of pharmaceutical compounds, due to their ability to exist in more than one form or crystal structure (polymorphism). These polymorphs exhibit different physical properties which can affect their biopharmaceutical properties. This book provides an up-to-date review of the current techniques used to characterize pharmaceutical solids. Ensuring balanced, practical coverage with industrial relevance, it covers a range of key applications in the field. The following topics are included: Physical properties and processes Thermodynamics Intellectual guidance X-ray diffraction Spectroscopy Microscopy Particle sizing Mechanical properties Vapour sorption Thermal analysis & Calorimetry Polymorph prediction Form selection
Author : Emile Pefferkorn
Publisher : CRC Press
ISBN 13 : 9780203909867
Total Pages : 468 pages
Book Rating : 4.9/5 (98 download)
Download or read book Interfacial Phenomena In Chromatography written by Emile Pefferkorn and published by CRC Press. This book was released on 1999-03-03 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interfacial Phenomena in Chromatography presents a combination of chromatographic theory, numerical simulation and experimental data. The text covers the interaction and size exclusion methods of separation, identification and characterization of substances in solution. It provides practical information and analysis on the most effective mechanisms
Author : Louis H. Sharpe
Publisher : CRC Press
ISBN 13 : 1000725200
Total Pages : 822 pages
Book Rating : 4.0/5 (7 download)
Download or read book Adhesion International 1993 written by Louis H. Sharpe and published by CRC Press. This book was released on 2020-01-29 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1996. ADHESION INTERNATIONAL 1993 is a volume of the Proceedings of the 16th Annual Meeting of The Adhesion Society, Inc. Williamsburg, Virginia, USA February 21-26,1993. This meeting featured an International Symposium on The Interphase. Interphases are extremely important in many areas of technology. They are formed when dissimilar materials are joined and they control the properties of adhesive joints, composites, coatings, and microelectronics devices. Considering the importance and scope of phenomena associated with the interphase, it was appropriate to convene such a symposium at the meeting.
Author :
Publisher :
ISBN 13 :
Total Pages : 508 pages
Book Rating : 4.0/5 ( download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-12 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jack Cazes
Publisher : CRC Press
ISBN 13 : 1439870675
Total Pages : 2968 pages
Book Rating : 4.4/5 (398 download)
Download or read book Encyclopedia of Chromatography written by Jack Cazes and published by CRC Press. This book was released on 2009-10-12 with total page 2968 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly revised and expanded, this third edition offers illustrative tables and figures to clarify technical points in the articles and provides a valuable, reader-friendly reference for all those who employ chromatographic methods for analysis of complex mixtures of substances. An authoritative source of information, this introductory guide to specific chromatographic techniques and theory discusses the relevant science and technology, offering key references for analyzing specific chemicals and applications in industry and focusing on emerging technologies and uses.
Author : Pau Loke Show
Publisher : CRC Press
ISBN 13 : 0429882513
Total Pages : 186 pages
Book Rating : 4.4/5 (298 download)
Download or read book Bioprocess Engineering written by Pau Loke Show and published by CRC Press. This book was released on 2019-06-13 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioprocess Engineering: Downstream Processing is the first book to present the principles of bioprocess engineering, focusing on downstream bioprocessing. It aims to provide the latest bioprocess technology and explain process analysis from an engineering point of view, using worked examples related to biological systems. This book introduces the commonly used technologies for downstream processing of biobased products. The covered topics include centrifugation, filtration, membrane separation, reverse osmosis, chromatography, biosorption, liquid-liquid separation, and drying. The basic principles and mechanism of separation are covered in each of the topics, wherein the engineering concept and design are emphasized. This book is aimed at bioprocess engineers and professionals who wish to perform downstream processing for their feedstock, as well as students.
Author : Nicolas Le Moigne
Publisher : Springer
ISBN 13 : 3319714104
Total Pages : 149 pages
Book Rating : 4.3/5 (197 download)
Download or read book Surfaces and Interfaces in Natural Fibre Reinforced Composites written by Nicolas Le Moigne and published by Springer. This book was released on 2018-02-06 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is addressed to Master and PhD students as well as researchers from academia and industry. It aims to provide the key definitions to understand the issues related to interface modifications in natural fibre based composites considering the particular supramolecular and micro- structures encountered in plant fibres. A particular emphasis is given to the modification and functionalization strategies of natural fibres and their impact on biocomposites behaviour and properties. Commonly used and newly developed treatment processes are described in view of scaling-up natural fibre treatments for their implementation in industry. Finally, a detailed and comprehensive description of the tools and methodologies developed to investigate and characterize surfaces and interfaces in natural fibre based composites is reviewed and discussed.
Author : Barry A. Wills
Publisher : Butterworth-Heinemann
ISBN 13 : 0080970540
Total Pages : 514 pages
Book Rating : 4.0/5 (89 download)
Download or read book Wills' Mineral Processing Technology written by Barry A. Wills and published by Butterworth-Heinemann. This book was released on 2015-09-01 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wills' Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery has been the definitive reference for the mineral processing industry for over thirty years. This industry standard reference provides practicing engineers and students of mineral processing, metallurgy, and mining with practical information on all the common techniques used in modern processing installations. Each chapter is dedicated to a major processing procedure—from underlying principles and technologies to the latest developments in strategies and equipment for processing increasingly complex refractory ores. The eighth edition of this classic reference enhances coverage of practical applications via the inclusion of new material focused on meeting the pressing demand for ever greater operational efficiency, while addressing the pivotal challenges of waste disposal and environmental remediation. Advances in automated mineralogy and analysis and high-pressure grinding rolls are given dedicated coverage. The new edition also contains more detailed discussions of comminution efficiency, classification, modeling, flocculation, reagents, liquid-solid separations, and beneficiation of phosphate, and industrial materials. Finally, the addition of new examples and solved problems further facilitates the book's pedagogical role in the classroom. - Connects fundamentals with practical applications to benefit students and practitioners alike - Ensures relevance internationally with new material and updates from renowned authorities in the UK, Australia, and Canada - Introduces the latest technologies and incorporates environmental issues to place the subject of mineral processing in a contemporary context, addressing concerns of sustainability and cost effectiveness - Provides new case studies, examples, and figures to bring a fresh perspective to the field
Author :
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ange Nzihou
Publisher : Springer Nature
ISBN 13 : 3030350207
Total Pages : 1394 pages
Book Rating : 4.0/5 (33 download)
Download or read book Handbook on Characterization of Biomass, Biowaste and Related By-products written by Ange Nzihou and published by Springer Nature. This book was released on 2020-02-17 with total page 1394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides authoritative information, techniques and data necessary for the appropriate understanding of biomass and biowaste (understood as contaminated biomass) composition and behaviour while processed in various conditions and technologies. Numerous techniques for characterizing biomass, biowaste and by-product streams exist in literature. However, there lacks a reference book where these techniques are gathered in a single book, although such information is in increasingly high demand. This handbook provides a wealth of characterization methods, protocols, standards, databases and references relevant to various biomass, biowaste materials and by-products. It specifically addresses sampling and preconditioning methods, extraction techniques of elements and molecules, as well as biochemical, mechanical and thermal characterization methods. Furthermore, advanced and innovative methods under development are highlighted. The characterization will allow the analysis, identification and quantification of molecules and species including biomass feedstocks and related conversion products. The characterization will also provide insight into physical, mechanical and thermal properties of biomass and biowaste as well as the resulting by-products.
Author : ConferenceSeries
Publisher : ConferenceSeries
ISBN 13 :
Total Pages : 97 pages
Book Rating : 4./5 ( download)
Download or read book Proceedings of 16th World Nano Conference 2017 written by ConferenceSeries and published by ConferenceSeries. This book was released on 2017-05-30 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: June 05-06, 2017 Milan, Italy Key Topics : Nanoscience and Technology, Nano Medicine, Nano Electronics, Molecular Nanotechnology, Nano Toxicology, Nano Topography, Nano Fluidics, Nano Weapons, Nano Biotechnology, Nanotechnology in Water treatment, Nano Composites, Nanoscale, Advanced Nanomaterials, Nanotech for Energy and Environment, Nano Computational Modelling, Nano Materials Synthesis and Characterisation, Nanobiomaterials, Molecular Mimics, Nanotechnology Safety, Nanophotonics, Nanotechnology and Cosmetics, Nanotechnology in Tissue Engineering, Nanotechnology in Agriculture and Food Industry,
Author : Hatsuo Ishida
Publisher : Elsevier
ISBN 13 : 1483292371
Total Pages : 292 pages
Book Rating : 4.4/5 (832 download)
Download or read book Characterization of Composite Materials written by Hatsuo Ishida and published by Elsevier. This book was released on 2013-10-22 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now, in one book, there is coverage of modern surface analytical techniques applied specifically to composite materials. Centering around spectroscopic characterization of composites and polymer-matrix composities, Characterization of CompositeMaterials covers techniques with a demonstrated use for composite stuides along with promising new techniques such as STM/AFM and special Raman spectroscopy. Each chapter will cover a specific technique and will provide basic background information, theories of the technique, and application examples, including futuristic state-of-the-art applications. Detailed information about the individual characterization techniques mentioned can be found in the Encyclopaedia of Materials Cahracterization, the companion volume in the Materials Characterization Series: surfaces, interfaces, thin films.
