Polyurethane components

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Table of contents

Introduction
1.1.- The Networks
1.1.1.- The Polyurethane (PU) Networks
1.1.1.1.- Brief History
1.1.1.2.- Polyurethane components
1.1.1.2.1.- Polyols
1.1.1.2.2.- Polyisocyanates
1.1.1.3.- Polycondensation of isocyanate-polyol to produce Polyurethane
1.1.1.3.1.- Secondary reactions
1.1.1.4.- Additives for polyurethanes’ preparation
1.1.2.- Model Networks
1.1.3.- Bimodal Networks
1.2.- Self-Assembled Monolayers (SAMs)
1.3.- Rubber elasticity
1.3.1.- Continuum Mechanics, Small and Large Strain Elasticity
1.3.2.- Elastic properties at small strains
1.3.3.- The Strain Energy Function W
1.3.4.- Strain Invariants
1.3.5.- The statistical mechanical theory of rubber elasticity
1.3.5.1.- Statistical theory of rubber elasticity
1.3.5.1.1- Affine network model
1.3.5.1.2- Phantom network model
1.3.6.- Thermodynamics of elastomers deformation
1.3.7.- Deviations from rubber elasticity theory
1.3.7.1.- Chain entanglements
1.3.7.2.- Finite extensibility
1.4.- Compression or Tension under confined conditions
1.4.1.- Cavitation
1.4.1.1- Inflation of a Spherical Shell (Balloon)
1.5.- Viscoelasticity: Effects of Temperature and Frequency
1.6.- Fracture behaviour
1.6.1.- The energy balance approach
1.6.2.- The Threshold Energy: Molecular model
1.7.- Molecular rate processes with a constant activation energy: relevance for fracture processes
Bibliography