sentence: Polyester is a type of polymer that contain the ester functional group in the main chain.
sentences_after: There are many different polyesters. Polyesters include chemicals found in nature, such as in the cutin of plant cuticles, as well as synthetics through step-growth polymerization such as polycarbonate and polybutyrate. Natural polyesters and a few synthetic ones are biodegradable. But most synthetic polyesters are not biodegradeable.
concept_name: polyester
headings: Polyester Chemistry
categories: Polymers