Question

Which of the following polymers is obtained from $\varepsilon$-caprolactum?

• A. Polyacrylonitrile
• B. Neoprene
• C. Terylene
• D. Nylon-6

Hint:

The numerical suffix in Nylon names indicates the number of carbon atoms in the monomer backbone. $\varepsilon$-caprolactam contains a 6-carbon cyclic ring ($5\text{ methylene groups } + 1\text{ carbonyl carbon}$), which acts as an instant mental bridge to Nylon-6.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
Identify the polymer obtained from ε-caprolactam polymerization.

Step 2: Detailed Explanation:
Polyacrylonitrile comes from acrylonitrile. Neoprene comes from chloroprene. Terylene is a polyester from ethylene glycol and terephthalic acid. Nylon-6 is produced by ring-opening polymerization of ε-caprolactam with water at 533-543 K, forming repeating -NH-(CH₂)₅-CO- units.

Step 3: Final Answer:
Nylon-6 is obtained from ε-caprolactam, option (D).