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2 Answers. 1  Rayon is made from plant cellulose, but that cellulose has been rendered and reduced into it's basic chemical form. Rayon is a synthetically made fiber from those naturally occurring plant materials. 2  It's a regenerated fiber. Regenerated fibers are made by processing natural fiber materials.
Chitra Sivasankar Arunagiri, iSpin, iWeave, iExport for a living. Views. Rayon is a regenerated cellulosic fiber manufactured from wood pulp. Since this is made from a natural material, sometimes this fiber is categorised as a semi-synthetic fiber. Wood pulp is processed through a variety of chemical reactions to finally get Rayon.