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Nylon 6

Nylon 6

  • There are many types of nylon available. The most common type of nylon are nylon 6 and nylon 6,6.
  • Nylon 6 or polycaprolactam is a polymer.
  • It is a semicrystalline polyamide.
  • Unlike most other nylons, nylon 6 is not a condensation polymer, but instead is formed by ring opening polymerisation.
  • Nylon 6 is synthesized by ring opening polymerisation of caprolactam.
    Caprolactum
    Caprolactam.
  • Nylon 6 is made from a caprolactam monomer having 6 carbon atoms. Hence the name nylon 6.
  • When caprolactam is heated at about 533K in an inert atmosphere of nitrogen for about 4-5 hours, the ring breaks and undergoes polymerisation. Then the molten mass is passed through spinneret to form fibres of nylon 6.
    polycaprolactam
    Polycaprolactam.
  • Nylon 6 fibres are tough, possessing high tensile strength, as well as elasticity and lusture.
  • They are wrinkleproof and highly resistant to abrasion and chemicals such as acid and alkalies.
  • It is used to make toothbrush bristles, and strings for acoustic and classical musical instruments, including guitars, sitars, violins.
  • It is also used in the manufacture of a large variety of threads, ropes, as well as knitted garments. Next
    Uses of polyamides
    Uses of nylon 6.

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