Question

Why do we say that rayon is not a complely a natural fiber

Answer 1

Answer:

It is, in fact, neither. It is called a “man-made” fiber, i.e. not “natural” because it was manufactured

, and not “synthetic” because it was manufactured from a natural polymer (cellulose)

and not a synthesized polymer. ... Rayon is a synthetically made fiber from those naturally occurring plant materials