Crystalline and Amorphous Combinations

FIGURE 2.20 Physical cross-linking through chain entanglement. 

FIGURE 2.21 Crystalline portions that act as physical cross-links. 

FIGURE 2.22 Chemically cross-linked rubber stretching resulting in the formation of physical crystalline cross-links. 

FIGURE 2.23 Idealized structure illustrating crystalline (ordered) and amorphous (nonordered) regions of lightly branched polyethylene (PE) chains for a prestressed and stressed orientation. 

FIGURE 2.24 General physical states of materials as a function of crystallinity and molecular weight. 

---