Question

Monomers of nylon 2-nylon 6 are:

• A.
• B.
• C.
• D.

Hint:

Key features of nylon 2-nylon 6: 1. Biodegradable alternative to conventional nylons
2. Contains alternating short (2C) and long (6C) segments
3. Amide linkages make it strong but flexible
4. Used in specialty applications requiring biodegradability

Answer 1

The Correct Option is A

Nylon 2-nylon 6 is a biodegradable polyamide copolymer. Its monomers are: - Glycine (H$_2$N-CH$_2$-COOH): Provides the "nylon 2" segment.
- 6-Aminohexanoic acid (Aminocaproic acid): Provides the "nylon 6" segment. Polymerization occurs through condensation reaction between amino and carboxyl groups. Why other options are incorrect: - Option (2): Monomers for nylon 6,6.
- Option (3): Monomer for nylon 6.
- Option (4): Monomers for PET. Thus, the correct answer is (1).

Answer 2

The monomers shown in the image are:

• Glycine – H₂N–CH₂–COOH (an α-amino acid with no side chain, also known as aminoethanoic acid)
• 6-Aminohexanoic acid – H₂N–(CH₂)₅–COOH (a six-carbon amino acid)

These two compounds are used as monomers to form the alternating copolymer called Nylon 2–Nylon 6.

Explanation:
Nylon 2–Nylon 6 is a copolyamide formed by condensation polymerization of:

• Nylon 2 part: comes from glycine (2 carbon atoms)
• Nylon 6 part: comes from 6-aminohexanoic acid (6 carbon atoms)

The polymer chain alternates between these two monomers, connected via amide (–CO–NH–) bonds, with water molecules being released during the process.

Final Answer:
The monomers of Nylon 2–Nylon 6 are glycine and 6-aminohexanoic acid.