Answer: Condensation polymers.
- A Thermosetting polymers
- B Elastomers
- C Fibres
- D Condensation polymers
Correct answer: D. Condensation polymers
Explanation: By intermolecular forces polymers are grouped as elastomers, fibres, thermoplastics and thermosetting polymers. Condensation is a classification by mode of synthesis, not by force.
Addition polymerisation simply links monomers containing a double bond with nothing left over, while condensation polymerisation joins two different monomers through a reaction (often forming an ester or amide bond) that releases a small molecule like water at each step.
Concept context
Large molecules made of repeating monomer units. Covers addition and condensation polymerisation, natural and synthetic polymers (nylon, PVC, Bakelite, natural rubber), and their real-world industrial applications.