Polycaprolactam is commercially designated as___________________?
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Answer: A. Nylon-6
Explanation
Polycaprolactam is the chemical polymer commonly designated and commercialized as Nylon-6. Ring-opening polymerization of caprolactam monomer yields long chains of polycaprolactam known commercially as Nylon-6. The numerical designation in nylon polymers corresponds to the number of carbon atoms in the starting monomer units. Nylons are synthetic polyamide engineering thermoplastics widely used in both fiber and structural molded parts. Caprolactam is a cyclic lactam containing six carbon atoms in its primary ring structure. Polyamides possess strong intermolecular hydrogen bonding that imparts high tensile strength and wear resistance.
Nylon-6 fibers are extensively utilized in textile manufacturing, tire cords, and durable commercial carpets. Engineered plastic components molded from Nylon-6 replace metal gears and bearings in various mechanical systems. Understanding polymer nomenclature ensures clear communication between polymer chemists and industrial manufacturers. Nylon-66 is produced by the condensation of hexamethylenediamine and adipic acid, containing six carbons in each precursor. Dacron is a polyester fiber synthesized from ethylene glycol and dimethyl terephthalate rather than a polyamide. Rayon is a regenerated cellulose fiber derived from natural wood pulp, completely distinct from synthetic nylons.
- Subject
- Engineering
- Category
- Chemical Engineering
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- —
- Difficulty
- medium
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