Question

which is fibre is made up of polyster polyurethansne copolymer?​

Answer 1

Answer:

Polyurethane fibers, sometimes called Spandex or Elastane, are synthetic fibers in which the fiber forming substance is a polymer consisting of at least 85 percent segmented polyurethane. The fiber is produced by reacting a polyester with a diisocyanate.

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Answer 2

Answer:

Spandex. Spandex is a lightweight, synthetic fiber that is used to make stretchable clothing such as sportswear. It is made up of a long chain polymer called polyurethane, which is produced by reacting a polyester with a diisocyanate. The polymer is converted into a fiber using a dry spinning technique.