Polycaprolactam (Nylon - 6) is produced by the condensation polymerisation of caprolactam at 240-280°C in which the conversion of caprolactam is about ______________ percent?
Correct answer: C. 90
- A. 50
- B. 75
- C. 90
- D. 99
Explanation
Ring-opening polymerisation of caprolactam to nylon-6 is equilibrium-limited, so industrial conversion is about 90%, with some monomer and oligomers remaining. It is therefore not essentially complete at 99%.
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