Polystyrene at a glance

Uses: thermoplastics
Monomer: styrene
Polymerization: free radical chain polymerization (atactic),
Ziegler-Natta polymerization (syndiotactic)
Morphology: highly amorphous (atactic), highly crystalline (syndiotactic)
Melting temperature: 270 oC (syndiotactic)
Glass transition temperature: 100 oC