Polyester is the base element of plastic. Polyester can be divided into two groups, aromatic chemical based polyester and aliphatic naturally occurring polyester.

Aromatic polyesters are the base of common everyday plastic PET, PE etc. This polyester can be recycled but does not biodegrade, thereby adding to the growing plastic pollution problem throughout the world.

Aliphatic polyesters on the other hand are readily biodegradable by nature and form the base of biodegradable plastics PHA, PLA etc. However the aliphatic polyesters are much more expensive hence this is why aromatic polyester based plastics have been developed in the past and so widely spread.

New technology and development has reduced the cost of biodegradable plastics by blending aliphatic polyesters with starch based polymers such as potatoes, corn and wheat (which are biodegradable by nature) to produce a competitive biodegradable plastic.

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