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Question
Write preparation, properties, and uses of Teflon.
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Solution
Preparation of Teflon:
- The monomer used in the preparation of Teflon is tetrafluoroethylene (CF2 = CF2), which is a gas at room temperature.
- Tetrafluoroethylene is polymerized by using free-radical initiators such as hydrogen peroxide or ammonium persulphate at high pressure to produce polytetrafluoroethylene (Teflon).
\[\ce{\underset{Tetrafluoroethylene}{{n} CF2 = CF2} ->[Polymerization][Peroxide]\underset{Teflon}{[-CF2 - CF2 -]}_{n}}\]
Properties of Teflon:
- Teflon is tough, chemically inert, and resistant to heat and attack by corrosive reagents.
- C – F bond is very difficult to break and remains unaffected by corrosive alkali and organic solvents.
Uses: Teflon is used in making non-stick cookware, oil seals, gaskets, etc.
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