Chemistry - Polymer Question with Solution | TestHub

Question Explanation:

The question asks which given polymer is a polyester based on its structural units.

Concept:

This question is based on polyesters (condensation polymers).

Solution:

Poly-β-hydroxybutyrate-co-β-hydroxyvalerate (PHBV) is formed by ester linkage between β-hydroxy acids, so it is a polyester.

The other options are not polyesters:

– Butadiene–styrene → synthetic rubber (hydrocarbon)

– Melamine polymer → thermosetting cross-linked polymer (secondary amine)

– Neoprene → polychloroprene rubber (alkyl halide)