HEAT CAPACITY OF LINEAR HIGH POLYMERS.
HEAT CAPACITY OF LINEAR HIGH POLYMERS.

Author: Bernhard Wunderlich

Publisher:

Published: 1968

Total Pages: 182

ISBN-13:

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All available data on heat capacities of linear high polymers have been critically reviewed and discussed in terms of the vibrational frequency spectrum. Several characteristic temperature regions could be delineated. Below 50K the heat capacity is conformation, crystallinity, and defect dependent. For crystalline polymer a T3 temperature dependence is generally found below 10K. Above 50K up to the glass transition temperature the heat capacity is largely independent of conformation crystallinity and defects. The absolute value of the heat capacity is largely additive from contributions of the chain atoms. The increase of heat capacity at the glass transition temperature of amorphous polymers is constant if calculated per mole of 'mobile bead.' Between the glass transition and melting transition of semicrystalline polymers uncertainties arise due to instabilities of the metastable crystals. Melting behavior has been briefly reviewed. The heat capacities of the melt have been discussed where available. Only for polyethylene could a detailed interpretation be given. (Author).

The Nature of Biological Systems as Revealed by Thermal Methods
The Nature of Biological Systems as Revealed by Thermal Methods

Author: Dénes Lörinczy

Publisher: Springer Science & Business Media

Published: 2006-02-21

Total Pages: 358

ISBN-13: 1402022190

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Af ter a kind mo ti va tion by Judit Si mon (Ed i tor-in-Chief of the Jour nal of Ther mal Anal y s is and Cal o ri m e t r y, Kluwe r Ac a dem ic Pub lis her) and ne go ti a tions with po- si ble con tri bu tors - lasting for m ore than one year - it was de cided to write a book about the ap pli ca tion of ther mal meth ods in bi ol ogy. Its aim was to be a guide how to per form ex per i ments and what kind of in for mation m ight be gained by them. We tried to col lect in for mation tha t could be achieved only dur ing a long per sonal pra- tice. In this way sci en tists from bi ol ogy and med i cine, e. g., who are not so skilled in phys ics and math e mat ics may re al ize very soon the beauty and power of this tool at one hand. On the other hand, those sci en tists with better back ground in nat u ral sc- ences can be more sensitive to find out exciting biological problems.

Macromolecular Physics V1
Macromolecular Physics V1

Author: Bernhard Wunderlich

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 564

ISBN-13: 0323145906

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Macromolecular Physics, Volume 1: Crystal Structure, Morphology, Defects provides a unified treatment of crystals of linear macromolecules. This book is organized into four chapters: structure of macromolecules, microscopic structure of crystals, crystal morphology, and defect crystal. This publication specifically discusses the macromolecular hypothesis, molecular conformation, and synthesis of macromolecules. The discovery and proof of the lattice theory, structures of minimum free energy, and crystal structures of macromolecules are also deliberated. This publication likewise covers the macromolecular crystals, macroscopic recognition of defects, and deformation of polymer crystals. This volume is a good reference for physicists, scientists, and specialists concerned with research on crystals of linear macromolecules.

Scientific and Technical Aerospace Reports
Scientific and Technical Aerospace Reports

Author:

Publisher:

Published: 1979

Total Pages: 750

ISBN-13:

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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Handbook of Thermal Analysis and Calorimetry
Handbook of Thermal Analysis and Calorimetry

Author: Stephen Z.D. Cheng

Publisher: Elsevier

Published: 2002-12-09

Total Pages: 859

ISBN-13: 008052740X

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As a new and exciting field of interdisciplinary macromolecular science and engineering, polymeric materials will have a profound presence in 21st century chemical, pharmaceutical, biomedical, manufacturing, infrastructure, electronic, optical and information technologies. The origin of this field derived from an area of polymer science and engineering encompassing plastic technologies. The field is rapidly expanding to incorporate new interdisciplinary research areas such as biomaterials, macromolecular biology, novel macromolecular structures, environmental macromolecular science and engineering, innovative and nano-fabrications of products, and is translating discoveries into technologies.·Unique in combining scientific concepts with technological aspects·Provides a comprehensive and broad coverage of thermodynamic and thermal behaviours of various polymeric materials as well as methodologies of thermal analysis and calorimetry·Contributions are from both pioneering scientists and the new generation of researchers

Macromolecular Physics
Macromolecular Physics

Author: Bernhard Wunderlich

Publisher: Academic Press

Published: 2013-10-22

Total Pages: 381

ISBN-13: 0080926649

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This third volume completes the first part of the project " Macromolecular Physics." The first volume dealt with the description of macromolecular crystals; the second volume dealt with crystal growth; and the third volume summarizes our knowledge of the melting of linear, flexible macromolecules. The discussion in the three volumes goes from reasonably well-established topics, such as the structure, morphology, and defects in crystals, to topics still in flux, such as crystal nucleation, detailed growth mechanisms, and annealing processes, to arrive at the present topics of equilibrium, nonequilibrium, and copolymer melting. Our knowledge is quite limited on many aspects of these latter topics.