Nylon 11

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Nylon 11 is composed of polymerized 11-amino-undecanoic acid. Nylon 11 was originally made from castor bean oil and marketed under the trademark of Rilsan®. Nylon 11 fibers have similar properties to nylon 6 and 6,6. Nylon 11, however is less dense, melts at a lower temperature and has better dimensional stability. It is often used for brush bristles, lingerie, bulked yarns, and injection molded plastics.

See also Nylon fiber.



Synonyms and Related Terms

PA11; polyamide 11; polyundecanamide; Nylon® [Du Pont]; Rilsan® [Arkema]; Rilsanite®

Physical and Chemical Properties

  • Resistant to alkalis and most organic solvents. Degraded by concentrated acids and phenol.
  • Burns with yellow-orange flame and blue smoke; smells of burnt horn.
  • Fiber is smooth.
  • Cross section is circular.
  • Tenacity = 5.0-7.5 g/denier (dry or wet);
  • Elongation = 25% (dry or wet);
  • Moisture regain = 1.18%
  • Melting Point = 189 C
  • Density = 1.04 g/ml

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 553
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986
  • J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, Merrow Publishing Co. , Durham, England
  • F. Kidd, Brushmaking Materials, Bristish Brush Manufacturers, London, 1957

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