Polylactic acid
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Polylactic acid, also known as poly or polylactide, is a plastic material. As a thermoplastic polyester it has the backbone formula n or n. PLA is formally obtained by condensation of lactic acid CHCO
PLA filament for use in 3D printing
Mulch film made of PLA-blend "bio-flex"
Biodegradable PLA cups
Tea bags made of PLA. Peppermint tea is enclosed.
Polyester
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Polyester is a category of polymers that contain one or two ester linkages in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terep
A polyester shirt
Close-up of a polyester shirt
SEM picture of a bend in a high-surface area polyester fiber with a seven-lobed cross section
A drop of water on a water resistant polyester