1st Edition
Relaxation in Physical and Mechanical Behavior of Polymers
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.
Introduction
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 ß-transition
Relaxation a-transition and vitrification
'Liquid–liquid' relaxation transition (ll-transition)
On the relationship of ß-, a-, 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 ¿–¿ mode
Biography
Maxim Arzhakov, Moscow State University, Moscow, Russia