Relaxation in Physical and Mechanical Behavior of Polymers  book cover
1st Edition

Relaxation in Physical and Mechanical Behavior of Polymers

ISBN 9780367199821
Published February 1, 2019 by CRC Press
174 Pages

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Book Description

Explores the nature of relaxation phenomena in polymers on the basis of time-temperature equivalence. Its role in the physical and mechanical behavior of polymers materials and fundamentals of thermoplastics processing are discussed. Four appendixes detail thermo-mechanical methods to study relaxation in polymers, structure of both amorphous and semi-crystalline polymers, and unified approach to describe deformation of polymeric materials.

Table of Contents


1. Viscoelasticity and relaxation 
 Mechanical models of a viscoelastic body
 Molecular–kinetic foundations of physico-mechanical behaviour of amorphous solids
 Viscoelasticity and relaxation properties of amorphous polymers
 The principle of temperature–time superposition

2. Relaxation transitions in some polymers
   Amorphous polymers
   Relaxation β-transition
   Relaxation α-transition and vitrification
   'Liquid–liquid' relaxation transition (ll-transition)
   On the relationship of β-, α-, and ll-transitions
   Plasticized polymers
   Intrastructural (molecular) plastification
   Interstructural plasticization
   Semi-crystalline polymers

3. The role of relaxation processes in phase transformations of polymers

4. Relaxation aspects of plastic deformation of polymers
   Polymeric glass
   Semi-crystalline polymers

5. Relaxation of deformed polymers 
   Relaxation of the latent energy of deformed polymer glasses
   Relaxation of the dimensions of deformed polymer glasses
   Physical ageing of deformed polymeric glasses

6. The ‘brittleness–plasticity’ transition and the low-temperature boundary of plasticity of polymers

7. Relaxation processes during processing of thermoplastic polymers
   Monolithization of powders in the P–T mode
   Monolithization of powders in the Т–Р mode


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Maxim Arzhakov, Moscow State University, Moscow, Russia