Question

write the chemical reactions to prepare the following Polymers 1)teflon​

Answer 1

Reactions:

SbF3                   800oC

CHCl3 ———→ CHF2Cl ————→ CF2 = CF2

HF                     –HCl (b.pt. –76oC

nCF2 = CF2 ————→ (– CF2 – CF2 –) n

(Tetrafluoroethylene)            (Teflon)

Answer 2

The chemical reaction to prepare polymer teflon is -

n CF$_{2}$ = CF$_{2}$  →  -(– CF2 – CF2 –)-$_{n}$

• The repeating unit or monomer of teflon is CF$_{2}$ = CF$_{2}$ .
• The IUPAC name of CF$_{2}$ = CF$_{2}$ is tetrafluoroethylene .
• Teflon is used for non-stick coating of pans and other cookwares .
• Due to the strength of carbon - fluorine bond , it is non reactive in nature .
• The density of teflon is 2200 kg/$m^{3}$ .