Low-Temperature Properties of Polymers - 1st Edition - ISBN: 9780080253015, 9781483158006

Low-Temperature Properties of Polymers

1st Edition

Authors: I. Perepechko
eBook ISBN: 9781483158006
Imprint: Pergamon
Published Date: 1st January 1980
Page Count: 310
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Description

Low-Temperature Properties of Polymers systematizes the available materials on polymers. This book also describes the main trends in the investigation of interrelated properties of polymers, such as thermal (heat capacity, thermal conductivity, and thermal expansion), acoustical, dielectric, and viscoelastic, which maintain the physical properties of polymers at low temperatures. Comprised of nine chapters, this book first covers heat capacity of polymers at low temperature, and then tackles thermal conductivity of polymers at low temperatures. Chapter 3 discusses thermal expansion of polymers at low temperatures, and Chapter 4 tackles electrical properties of polymers at low temperatures. The fifth chapter covers nuclear magnetic resonance in polymers at low temperature, while the succeeding chapter encompasses dynamic mechanical properties of polymers at low temperatures. Chapter 7 concerns itself with the acoustical properties of polymers at low temperatures, while the succeeding chapter covers viscoelastic parameters of polymers at low temperatures. The closing chapter covers how to determine the thermophysical characteristics of polymers by acoustic measurement at helium temperature. This book will be of great interest to researchers or professionals whose line of work involves the manipulation and understanding of the properties of polymers.

Table of Contents


Preface

Chapter 1. Heat Capacity of Polymers at Low Temperatures

1.1. Basic Concepts of the Heat Capacity of Solids

1.2. Basic Concepts of the Heat Capacity of Polymers

1.3. Methods of Measuring Heat Capacity

1.4. The Heat Capacity of Polymers

1.4.1. The Heat Capacity of Crystalline Polymers

1.4.2. The Heat Capacity of Amorphous Polymers

Chapter 2. Thermal Conductivity off Polymers at Low Temperatures

2.1. Basic Concepts of the Thermal Conductivity of Dielectrics

2.2. Methods of Measuring the Thermal Conductivity of Polymers

2.3. Thermal Conductivity of Polymers at Low Temperatures

2.3.1. Thermal Conductivity of Crystalline Polymers

2.3.2. Thermal Conductivity of Amorphous Polymers

Chapter 3. Thermal Expansion off Polymers at Low Temperatures

3.1. Thermal Expansion of Solids

3.2. Equations of State for Solids

3.3. Basic Concepts of the Thermal Expansion of Polymers

3.3.1. Thermal Expansion of Amorphous Polymers

3.3.2. Thermal Expansion of Crystalline Polymers

3.4. Methods of Measuring Thermal Expansion Coefficients of Polymers

3.5. Thermal Expansion Coefficients of Polymers

Chapter 4. Electrical Properties of Polymers at Low Temperatures

4.1. Basic Concepts of the Electrical Properties of Polymers

4.2. Dielectric Constants of Solids

4.3. Phenomenological Relaxation Theory of the Dielectric Properties of Polymers

4.3.1. Basic Equations

4.3.2. Dielectric Properties of a System with a Single Relaxation Time

4.3.3. Temperature Dependence of Dielectric Properties

4.4. The Mechanism of Dielectric Relaxation

4.5. Methods of Studying the Dielectric Properties of Polymers

4.6. Dielectric Properties of Polymers

Chapter 5. Nuclear Magnetic Resonance in Polymers at Low Temperatures

5.1. Basic Concepts of Nuclear Magnetic Resonance in Polymers

5.2. Effect of the Structure and Composition of Polymers on Nuclear Magnetic Resonance

5.2.1. Effect of the Degree of Crystallinity on the NMR Line-width

5.2.2. Effect of the Degree of Cross-Linking on the NMR Line-width

5.2.3. Effect of Plasticizer Concentration on the NMR Signal Line-width in Plasticized Polymers

5.2.4. Effect of the Structure and Composition of Polymers on the Second Moment and the Spin-Lattice Relaxation Time

5.3. Investigation of the Molecular Motion in Polymers at Low Temperatures by the NMR Method

5.3.1. Quantum-Mechanical Tunneling Transitions in Polymers Containing Methyl Groups

5.3.2. Nuclear Magnetic Resonance in Polymers Containing Methyl Groups

Chapter 6. Dynamic Mechanical Properties of Polymers at Low Temperatures

6.1. Effect of Chemical Constitution, Structure, and Composition on the Dynamic Mechanical Properties of Polymers. Basic Concepts of Acoustic Spectroscopy of Polymers

6.2. Methods of Investigating the Dynamic Mechanical Properties of Polymers

6.3. Relaxation Processes in Polymers at Low Temperatures

6.3.1. The Mechanism of Viscoelastic Relaxation in Polymers Containing Methyl Groups

Chapter 7. The Acoustical Properties off Polymers at Low Temperatures

7.1. Propagation of Ultrasonic Waves in Dielectrics

7.2. The Phenomenological Theory of Sound Propagation in Polymers

7.3. Experimental Methods of Acoustical Measurements in Polymers

7.4. Ultrasonic Velocity and Relaxation Processes in Polymers

7.5. Ultrasonic Velocity and Relaxation Processes in Linear Crystalline Polymers at Helium Temperatures. The Low Temperature Plateau

7.6. Ultrasonic Velocity and Relaxation Processes in Polymers Containing Methyl Groups

7.7. Ultrasonic Velocity and Relaxation Processes in Polymers with an Asymmetric Potential Barrier

7.8. Effect of Structure on Acoustical Properties

Chapter 8. Viscoelastic Parameters off Polymers at Low Temperatures

8.1. Determination of the Main Viscoelastic Parameters of Polymers from Acoustic Measurements

8.2. Dynamic Elastic Moduli of Polymers

8.3. Poisson's Ratio for Polymers Near the Liquid-Helium Temperature

Chapter 9. Determining the Thermo-physical Characteristics of Polymers by Acoustic Measurements at Helium Temperatures

9.1. Debye Temperatures and Heat Capacities Determined by Acoustic Measurements

9.2. Determining the Thermal Expansion Coefficients and Grüneisen Constants from Acoustic Measurements

Appendix. Some Thermo-physical, Dielectric, Viscoelastic and Acoustical Parameters of Polymers at Low Temperatures

References

Name Index

Subject Index

Details

No. of pages:
310
Language:
English
Copyright:
© Pergamon 1980
Published:
Imprint:
Pergamon
eBook ISBN:
9781483158006

About the Author

I. Perepechko