Acrylic fiber

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A manufactured fiber in which the fiber-forming substance is any long chain synthetic polymer composed of at least 85% by weight of Acrylonitrile units (Federal Trade Commission definition). Acrylic fibers were first commercially manufactured in 1950 by DuPont as the product Orlon®. The Acrylic resin is dissolved in a solvent, then extruded through spinnerets to produce long, continuous filaments. The smooth, Thermoplastic fibers are resistant to wrinkles, chemicals, UV light, Weathering, insects, Mildew, and moisture. They produce fabrics that are non-allergenic, lightweight, soft, durable and fast drying. They are, however, susceptible to heat and will melt or burn. Acrylic fibers are used for carpets, blankets, drapes, outdoor products (awnings, geotextiles, etc) and apparel such as sweaters, coats, linings, hosiery, dresses, and shirts.

For acrylic fiber identification, see

Acrylic fibers

Synonyms and Related Terms

acrylic fibre (Br.); fibra acrílica (Esp.); fibre acrylique (Fr.); acrylaat vezel (Ned); polyacrylonitrile; Orlon® [DuPont]; Creslan® [Sterling]; Zefran® [Badische]; Acrilan® [Solutia]; Dynel® [Union Carbide]; Crylor; Courtelle®; Dralon®;

Acrilan FTIR


Creslan FTIR


Orlon FTIR


Acrilan SEM


Creslan SEM


Orlon SEM




Combustible. Accumulates static charge.

Physical and Chemical Properties

Insoluble in most common organic solvents. Resistant to weak acids. Burns readily with smoky flame and acid smell. The ash is hard.

Cross section = variable (dogbone, round, bean shaped or lobed)

Moisture regain 1.0-3.0%
Elongation 20-55% (dry)
Tenacity 2.0-3.6 g/denier (dry)
Melting Point 215-255 (soften)
Density 1.16-1.18


Properties of Synthetic Fibers

Fiber Burn Tests

Additional Information

  • M. Joseph, Introductory Textile Science, Holt Reinhold & Winston, Fort Worth, 1986.
  • G.Cook, Handbook of Textile Fibres:II. Man-made Fibres, 5th edition, Merrow Publishing Co., Durham, England, 1984.

Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials below

Sources Checked for Data in Record

  • Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
  • Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
  • Meredith Montague, contributed information, 1998
  • Website address 1 Comment: : Link

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