Polymers Of Commercial Importance

Nylon-66 is a polymer of hexamethylene diammine and adipic acid

Acrylonitrile (CH =CH–CN) undergoes addition polymerization to form the polymer polyacrylonitrile (PAN). PAN is widely used in textile and plastic industries and is also a precursor for carbon fiber production. - PVC is formed from vinyl chloride (CH =CHCl).
- Teflon is formed from tetrafluoroethylene (CF =CF ).
- Nylon-6 is formed from caprolactam, not acrylonitrile.

Concept:
Buna-S is a synthetic rubber produced by the copolymerization of two different monomers. The name Buna-S is derived from its components:
• Bu: Butadiene
• Na: Sodium catalyst used in polymerization
• S: Styrene

Step 1: Identify the monomers involved. The two monomers used in Buna-S formation are:
• 1,3-Butadiene
• Styrene

Step 2: Understand the polymer formation.
These monomers undergo copolymerization to produce styrene-butadiene rubber (SBR), commonly called Buna-S.

Step 3: State the final answer.