The general requirement for a monomer to undergo addition polymerisation is that it must contain
Correct answer: D. a carbon to carbon double bond
- A. at least two different functional groups
- B. a benzene ring
- C. a hydroxyl group
- D. a carbon to carbon double bond
Explanation
The pi bond opens so that each unit can bond to the next with nothing eliminated, which is why ethene, propene, chloroethene and styrene all polymerise this way. Two different functional groups are what condensation polymerisation needs, as in the diamine and diacid of nylon. Checking for the double bond is the quickest way to classify an unfamiliar polymerisation.
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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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