1. Manufactured Fibers

3. Rayon Rayon is a regenerated cellulose fiber. There are two different methods used to produce rayon, the viscose process and the Bemberg process. The viscose process is far more commonly used.

4. Rayon Because the method of producing rayon, the cross-section of the fiber is irregularly shaped. Newer types of rayon exhibit irregularities also but can be made more round. These irregularities appear longitudinally as striations.

5. Acetate & Triacetate

6. Nylons 1. Amide linkages in the chain backbone 2. Aliphatic units (hydrocarbon chains) between links

7. Nylon 6 & Nylon 6,6

8. Aramids Kevlar® Nomex®

9. Polyesters

10. Acrylic & Modacrylic Acrylonitrile unit

11. Polyolefins

12. Strength/Tenacity Graphite Aramid (PPTA) Polyethylene (high strength) Glass Polyester Nylon Cotton Silk Wool Rayon Acrylic Acetate/triacetate Polyolefin

13. Elongations Rubber Polyolefin Wool Acrylic Rayon Nylon Polyester Silk Cotton Glass Polyethylene (high strength) Aramid (PPTA) Graphite

14. Resiliency Rubber Polyester Wool Nylon Acrylic/modacrylic Polyolefin Silk Acetate Cotton Rayon

15. Toughness/Work of Rupture Polyester Nylon Polyolefin Wool Cotton Acrylic Glass Polyethylene (high strength) Aramid (PPTA) Graphite

16. Stiffness/Modulus Graphite Aramid (PPTA) Polyester Cotton Nylon Wool Acrylic Polyolefin