Question

Which petrochemical product replace the traditional cotton fibre?

Answer 1

as far as I remember it is nylon

Answer 2

Cotton which is a traditional cotton fibre is not replaceable by any petrochemical product. But Rayon is only the petrochemical product which can replace cotton. Because Rayon is cheaper that cotton, and it is available in everywhere. Rayon is used in everywhere also manufactures largely than cotton. Rayon's raw materials are easily available than cotton.