Hexamethylene diamine and adipic acid combine to form _____________?
Correct answer: C. nylon 6-6
- A. Natural rubber
- B. Synthetic rubber
- C. nylon 6-6
- D. Polystyrene
Explanation
Hexamethylene diamine reacts with adipic acid by condensation polymerisation, forming amide links and eliminating water. The resulting polyamide is nylon 6,6, named from the six carbon atoms in each monomer. The likely wrong choice is synthetic rubber because nylon is also man-made, but its amide-linked structure makes it a synthetic fibre rather than a rubber.
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About Polymers
Polymers are large molecules made from repeating monomer units joined by covalent bonds. The topic distinguishes addition polymers such as polyethylene, PVC and polystyrene from condensation polymers such as nylon and polyester, and relates chain structure to thermoplastics, thermosetting polymers, elastomers, properties, uses and environmental concerns.
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