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Author: Raleigh L. McKisson
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
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Author: Raleigh L. McKisson
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
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Book Description
Author: Mike Reading
Publisher: Springer Science & Business Media
ISBN: 1402037503
Category : Technology & Engineering
Languages : en
Pages : 340
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Book Description
MTDSC provides a step-change increase in the power of calorimetry to characterize virtually all polymer systems including curing systems, blends and semicrystalline polymers. It enables hidden transitions to be revealed, miscibility to be accurately assessed, and phases and interfaces in complex blends to be quantified. It also enables crystallinity in complex systems to be measured and provides new insights into melting behaviour. All of this is achieved by a simple modification of conventional DSC. In 1992 a new calorimetric technique was introduced that superimposed a small modulation on top of the conventional linear temperature program typically used in differential scanning calorimetry. This was combined with a method of data analysis that enabled the sample’s response to the linear component of the temperature program to be separated from its response to the periodic component. In this way, for the first time, a signal equivalent to that of conventional DSC was obtained simultaneously with a measure of the sample’s heat capacity from the modulation. The new information this provided sparked a revolution in scanning calorimetry by enabling new insights to be gained into almost all aspects of polymer characteristics. This book provides both a basic and advanced treatment of the theory of the technique followed by a detailed exposition of its application to reacting systems, blends and semicrystalline polymers by the leaders in all of these fields. It is an essential text for anybody interested in calorimetry or polymer characterization, especially if they have found that conventional DSC cannot help them with their problems.
Author: Christoph Schick
Publisher: Springer
ISBN: 3319313290
Category : Technology & Engineering
Languages : en
Pages : 801
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Book Description
In the past decades, the scan rate range of calorimeters has been extended tremendously at the high end, from approximately 10 up to 10 000 000 °C/s and more. The combination of various calorimeters and the newly-developed Fast Scanning Calorimeters (FSC) now span 11 orders of magnitude, by which many processes can be mimicked according to the time scale(s) of chemical and physical transitions occurring during cooling, heating and isothermal stays in case heat is exchanged. This not only opens new areas of research on polymers, metals, pharmaceuticals and all kinds of substances with respect to glass transition, crystallization and melting phenomena, it also enables in-depth study of metastability and reorganization of samples on an 1 to 1000 ng scale. In addition, FSC will become a crucial tool for understanding and optimization of processing methods at high speeds like injection molding. The book resembles the state-of-the art in Thermal Analysis & Calorimetry and is an excellent starting point for both experts and newcomers in the field.
Author:
Publisher:
ISBN:
Category : Calorimeters
Languages : en
Pages : 40
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Book Description
A method has been devised for using the high frequency induction coil as a high temperature calorimeter. The method enables one to determine the heat effects produced at high temperatures. The method has been applied to the determination of the heats of formation of the alloys Na-Sn and Li-Sn. The average heat of formation (delta H) determined for Na-Sn is -9.63 +/= 0.40 hilocalories per mole at 8730 K. This value becomes -10.6 +/= 0.6 kilocalories per mole when extrapolated to 298 deg K. The average heat of formation (delta H) determined for Li-Sn is -17.57 +/= 0.83 kilocalories per mole at 850 deg K. This value becomes -18.62 +/= 1.50 kilocalories per mole when extrapolated to 298 deg K. These results are compared with the results of other investigators.
Author: Günther Höhne
Publisher: Springer Science & Business Media
ISBN: 3662067102
Category : Science
Languages : en
Pages : 304
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Book Description
In this fully updated and revised second edition the authors provide the newcomer and the experienced practitioner with a balanced and comprehensive insight into all important DSC methods, including a sound presentation of the theoretical basis of DSC and TMDSC measurements. Emphasis is layed on instrumentation, the underlying measurement principles, metrologically correct calibrations, factors influencing the measurement process, and on the exact interpretation of the results. The information given enables the research scientist, the analyst and experienced laboratory staff to apply DSC methods successfully and to measure respective properties correctly.
Author: K. N. Marsh
Publisher: Wiley-Blackwell
ISBN: 9780865428522
Category : Science
Languages : en
Pages : 331
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Book Description
Synthetic organic chemistry is currently advancing in many new and exciting directions. Formation of C-H, C-O and C-C bonds with high diastero- and enantio-selectivity is still emerging; and as methods such as these develop, sythetic strategies to complex organic molecules follow. By being able to make structural entities at will, the prospect for understanding molecular function,"
Author: Andrew C. Victor
Publisher:
ISBN:
Category : Enthalpy
Languages : en
Pages : 64
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Author: W. Zielenkiewicz
Publisher: Springer Science & Business Media
ISBN: 0306484188
Category : Science
Languages : en
Pages : 198
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Book Description
Calorimetry is one of the oldest areas of physical chemistry. The date on which calorimetry came into being may be taken as 13 June 1783, the day on which Lavoisier and Laplace presented a contribution entitled ,,Memoire de la Chaleur“ at a session of the Academie Française. Throughout the existence of calorimetry, many new methods have been developed and the measuring techniques have been improved. At p- sent, numerous laboratories worldwide continue to focus attention on the development and applications of calorimetry, and a number of com- nies specialize in the production of calorimeters. The calorimeter is an instrument that allows heat effects in it to be determined by directly measurement of temperature. Accordingly, to determine a heat effect, it is necessary to establish the relationship - tween the heat effect generated and the quantity measured in the ca- rimeter. It is this relationship that unambiguously determines the mathematical model of the calorimeter. Depending on the type of ca- rimeter applied, the accuracy required, and the conditions of heat and mass transfer that prevail in the device, the relationship between the measured and generated quantities can assume different mathematical forms.
Author: Stefan Mathias Sarge
Publisher: John Wiley & Sons
ISBN: 3527649387
Category : Science
Languages : en
Pages : 304
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Book Description
Clearly divided into three parts, this practical book begins by dealing with all fundamental aspects of calorimetry. The second part looks at the equipment used and new developments. The third and final section provides measurement guidelines in order to obtain the best results. The result is optimized knowledge for users of this technique, supplemented with practical tips and tricks.
Author: Ele Eugene Stansbury
Publisher:
ISBN:
Category : Calorimeters
Languages : en
Pages : 72
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Book Description
