Manufactured Fibers. Rayon Rayon is a regenerated cellulose fiber. There are two different methods used to produce rayon, the viscose process and the.

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Presentation transcript:

Manufactured Fibers

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.

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.

Acetate & Triacetate

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

Nylon 6 & Nylon 6,6

Aramids Kevlar® Nomex®

Polyesters

Acrylic & Modacrylic Acrylonitrile unit

Polyolefins

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

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

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

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

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