Condensation polymerization converts 90% of caprolactam into nylon-6 inside a reactor maintained at a temperature of _____________ °C?
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Answer: C. 250-280
Explanation
Industrial condensation polymerization of caprolactam to produce nylon-6 requires temperatures between 250 and 280 degrees Celsius. This high thermal energy is necessary to drive the ring opening and condensation reactions forward efficiently. Reactor temperatures must be precisely controlled within the 250 to 280 range to achieve high molecular weight. Caprolactam is an organic lactam molecule that serves as the exclusive monomer for producing nylon-6 polymer. Condensation polymerization involves the reaction of monomer functional groups accompanied by the release of small molecules. Molten polymer from the reactor is continuously extruded and pelletized for subsequent textile fiber spinning.
A temperature of negative five degrees Celsius would freeze the monomer and halt all polymerization reactions. Ten to thirty degrees Celsius represents ambient room temperature which is far too cold for nylon synthesis. Five hundred to six hundred degrees Celsius would thermally degrade the polymer chains and cause decomposition.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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