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Question

Explain the preparation and uses of nylon-2-nylon-6.


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Solution

Condensation polymerization:-

  1. Condensation polymerization is a type of polymerization reaction in which two monomer molecules of the same or different types having at least two functional groups are joined together to form a large polymeric chain.
  2. Small molecules like water, and alcohol, are obtained as the byproducts of this reaction.

Preparation of Nylon-2-nylon-6:-

  1. By condensation polymerization Nylon-2-nylon-6 is obtained.
  2. It is a biodegradable polymer.
  3. It is formed from two monomers, Glycine and Amino caproic acid.
  4. Glycine has one amino group and one carboxylic group attached to the methylene group and its structure is NH2-CH2-COOH.
  5. On the other hand Amino caproic acid has one amino group, one carboxylic group, and five methylene groups, and its structure is NH2-(CH2)5-COOH.
  6. An amide bond is formed when the amino group of glycine condenses with the carboxylic group of amino caproic acid.
  7. In the same manner another amide bond is formed when the carboxylic group of glycine condenses with the amino group of amino caproic acid.
  8. The complete reaction of formation of Nylon-2-nylon-6 is:

Uses of Nylon-2-nylon-6:-

  1. It is used as the threads in the bristles of a toothbrush.
  2. It is also used in musical instruments for making strings.
  3. Artificial fibers are synthesized using Nylon-2-nylon-6.

Therefore, Nylon-2-nylon-6 is formed by condensation polymerization of Glycine (NH2-CH2-COOH) and Amino caproic acid (NH2-(CH2)5-COOH) and are used in threads in the bristles of a toothbrush, making strings in musical instruments, and synthesizing artificial fibers.


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