In the following slides, you will be introduced to polymers and plastics, the mechanical properties of plastics, and the environmental degradability of plastics. Stress, σ Strain, ε H 3 C CH 2 H 3 C CH 2 C CH 2 CH 2 CH CH 2 CH 2 CH 2 CH 2 CH CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 H 2