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प्रश्न
Attempt the following:
Write preparation, properties and uses of Teflon.
उत्तर
Preparation of teflon:
- The monomer used in 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, organic solvents.
Uses: Teflon is used in making non-stick cookware, oil seals, gaskets, etc.
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