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Polyester (aka Terylene) is a category of polymers which contain the ester functional group in their main chain. Although there are many forms of polyesters, the term "polyester" is most commonly used to refer to polyethylene terephthalate (PET). Other forms of polyester include naturally occurring cutin of plant cuticles as well as synthetic polyesters such as polycarbonate.
Polyester fabrics sometimes have a "less natural" feel when compared to similarly woven fabrics made from natural fibers, e.g., cotton. However, polyester fabrics may exhibit other advantages over natural fabrics, e.g., improved wrinkle resistance. As a result, polyester fibers are often spun together with natural fibers, e.g., cotton, to produce a cloth with blended properties.
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