1. Introduction
2. Section (a) Characterization of the Raw Materials
2.1 Molecular Weight Characterization
2.2 Glass Transition Temperature, Tg
2.3 Melt Rheology
2.4 Conclusions
3. Section (b) Preparation of Oriented Sheet Materials
4. Section (c) The Degree of Orientation
4.1 The Length Reversion Ratio
4.2 Birefringence
4.2.1 Birefringence and Nominal Draw Ratio
4.2.2 Variation of Birefringence with Depth within Sheet
4.2.3 Birefringence and Length Reversion Ratio
4.3 The Orientation Parameter
4.3.1 Birefringence and Orientation Stress
4.3.2 Birefringence, Orientation Stress, Shrinkage Stress and Stress Relaxation
4.3.3 Birefringence and Sonic Modulus
4.4 Conclusions
5. Section (d) Some Properties of the Oriented Sheets
5.1 Tensile Properties
5.1.1 The Estimation of Strain Rate, ϵ
5.1.2 The Estimation of Specific Rupture Energy, Wr
5.1.3 The Variation of Rupture Stress with Strain Rate and Orientation
5.1.4 The Variation of Rupture Strain with Strain Rate and Orientation
5.1.5 The Variation of Specific Rupture Energy, Wr, with Strain Rate and Orientation
5.1.6 Variation of Rupture Strain with Time to Rupture
5.1.7 The Time Dependent Young's Modulus of Elasticity, E(t), and the Relaxation Spectrum H (In τ)
5.1.8 The Effect of Temperature on Tensile Properties
5.2 Impact Strength
5.3 Environmental Stress Cracking
6. Summary and Conclusions
References
Appendix