Polymer Fractionation
Polymer Fractionation

Author: Manfred J. R. Cantow

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 540

ISBN-13: 1483271706

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Polymer Fractionation focuses on the processes, reactions, and transformations involved in polymer fractionation, including chromatography, titration, and sedimentation. The selection first offers information on theoretical considerations and fractional precipitation. Topics include polydispersity of high polymers, phase relations for polydisperse systems, fractionation theory and efficiency, and fractionation by solvent evaporation. The manuscript then takes a look at fractional solution, chromatographic fractionation, and gel permeation chromatography. The book elaborates on thermal diffusion and turbidimetric titration, as well as methods of fractionation, studies of the variables, outline of the method and range of application, and elaboration of the method. The text then ponders on sedimentation, isothermal diffusion, and summative fractionation. Discussions focus on mathematical interpretation of summative data, experimental methods for the determination of diffusion constants, and methods for the determination of the diffusion coefficient distribution. The selection is a valuable source of information for readers interested in polymer fractionation.

Polymer Fractionation
Polymer Fractionation

Author: Frieder Francuskiewicz

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 230

ISBN-13: 3642787045

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Fractionation of polymers via solubility has been a well known method in polymer characterization for a long time. The original object of analytical fractionations, the determination of the molecular weight distribution, is nowadays achieved more efficiently and conveniently by chromatographic methods. However, fractionation procedures, which were developed in great diversity, remain up~to-date and essential for obtaining preparative fractions with narrow distributions. Such fractions are wanted increasingly for the investigation of true structure-property relationships which are mostly influ~ enced by distributions of molecular weight or other parameters such as branching or chemical composition. Literature on the field of polymer fractionation is extensive and several reviews exist. However, there is a lack of systematically methodical instruc tions for carrying-out of diverse fractionation procedures. This volume repre sents an attempt to reduce this deficiency and is focussed on practical aspects of fractionation procedures. This laboratory manual is intended for polymer chemists, physicists, and technicians, for students of polymer science, and skilled laboratory assistants, all of whom are not dealing directly with fractionation but are in need of fractions to carry out further investigations.

Advanced Separation Techniques for Polyolefins
Advanced Separation Techniques for Polyolefins

Author: Harald Pasch

Publisher: Springer

Published: 2014-08-27

Total Pages: 189

ISBN-13: 3319086324

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This Springer Laboratory volume introduces the reader to advanced techniques for the separation and fractionation of polyolefins. It includes detailed information on experimental protocols and procedures, addressing the experimental background of different polyolefin fractionation techniques in great detail. The book summarizes important applications in all major fractionation methods with emphasis on multidimensional analytical approaches. It comprises the most powerful modern techniques, such as high temperature size exclusion chromatography (HT-SEC) for molar mass analysis, temperature rising elution fractionation (TREF) and crystallization analysis fractionation (CRYSTAF) for the analysis of chemical composition and branching, high temperature two-dimensional liquid chromatography (HT-2D-LC), solvent and temperature gradient interaction chromatography (SGIC and TGIC) and crystallization elution fractionation (CEF). Beginners as well as experienced chromatographers will benefit from this concise introduction to a great variety in instrumentation, separation procedures and applications. With detailed descriptions of experimental approaches for the analysis of complex polyolefins, the readers are offered a toolbox to solve simple as well as sophisticated separation tasks. The book starts with an introduction into the molecular complexity of polyolefins - the most widely used synthetic polymers with rapidly growing production capacities. It systematically discusses crystallization based fractionation techniques including TREF, CRYSTAF and CEF and column chromatographic techniques for molar mass, chemical composition and microstructure, as well as the combination of different fractionations in multidimensional experimental setups. This book also includes basic information on the application of high-temperature field-flow fractionation.

Analytical Ultracentrifugation of Polymers and Nanoparticles
Analytical Ultracentrifugation of Polymers and Nanoparticles

Author: Walter Maechtle

Publisher: Springer Science & Business Media

Published: 2006-07-09

Total Pages: 249

ISBN-13: 3540262180

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This book is divided into chapters covering instrumentation, sedimentation velocity runs, density gradient runs, application examples and future developments. In particular, the detailed application chapter demonstrates the versatility and power of AUC by means of many interesting and important industrial examples. Thus the book concentrates on practical aspects rather than details of centrifugation theory.

Thermal Field-flow Fractionation of Polymers
Thermal Field-flow Fractionation of Polymers

Author: Guilaume Greyling

Publisher:

Published: 2019

Total Pages:

ISBN-13: 9783030106515

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This book introduces the reader to thermal field-flow fractionation and discusses its advantages over the fundamental problems associated with traditional column-based analytical techniques commonly used to characterize polymers and macromolecules. The authors discuss the theoretical background, equipment, experimental procedures as well as the recent advances and applications of thermal field-flow fractionation. Complete with several practical examples and troubleshooting guidelines, the book is written for beginners and experienced separation scientists alike and will enable its readers to optimize their experimental conditions for their specific separation needs and problems.

Centrifugal Separations in Biotechnology
Centrifugal Separations in Biotechnology

Author: Wallace Woon-Fong Leung

Publisher: Butterworth-Heinemann

Published: 2020-03-13

Total Pages: 503

ISBN-13: 0081026358

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Centrifugal Separations in Biotechnology, Second Edition, is the only book on the market devoted to centrifugal separation in biotechnology. Key topics covered include a full introduction to centrifugation, sedimentation and separation; detailed coverage of centrifuge types, including batch and semi-batch centrifuges, disk-stack and tubular decanter centrifuges; methods for increasing solids concentration; laboratory and pilot testing of centrifuges; selection and sizing centrifuges; scale-up of equipment, performance prediction and analysis of test results using numerical simulation. Centrifugal Separations in Biotechnology, Second Edition, provides guidance on troubleshooting and optimizing centrifuges, and then goes on to explore the commercial applications of centrifuges in biotechnology. It gives detailed process information and data to assist in the development of particular processes from existing systems. It is of value to professionals in the chemical, bioprocess, and biotech sectors, and all those concerned with bioseparation, bioprocessing, unit-operations and process engineering. Provides a comprehensive guide to centrifuges, their optimal development, and their operation in the biotechnology industry Updated throughout based on developments in industrial applications and advances in our understanding of centrifugal separations in biotechnology Discusses applications for the separation of proteins, DNA, mitochondria, ribosomes, lysosomes and other cellular elements Includes new sections on use of optimal polymer dosage in waste treatment, new centrifuge designs for applications in algae processing, biopharma, and more

Fundamentals of Polymer Chemistry : Principles, Methods, Properties and Applications
Fundamentals of Polymer Chemistry : Principles, Methods, Properties and Applications

Author: Abhijit Bandyopadhyay

Publisher: Techsar Pvt. Ltd.

Published: 2024-06-20

Total Pages: 276

ISBN-13: 8197190984

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Polymer Chemistry is a subdiscipline of chemistry that focuses on the chemical synthesis, structure and chemical and physical properties of polymers and macromolecules. The principles and methods used in polymer chemistry are also applicable through a wide range of other subdisciplines like Organic Chemistry, Analytical Chemistry and Physical Chemistry. Polymer Chemistry can also be included in broader fields of Polymer science or even nanotechnology, both of which can be described as encompassing polymer physics and polymer engineering. This book provides a comprehensive introduction and circumscribes the recent development in the realm of polymer science in a multi-mode model. The book emphasizes both theoretical perspectives along with examples to make readers understand the subject in depth alongside also presents subjective, objective-cum-numerical problems enabling students to prepare for various competitive examinations.