Sunn

Description

A tough fiber obtained from the Crotalaria juncea plant that is native to India and Pakistan. Sunn fibers have been used in Asia since prehistoric times and were imported to Europe in the early 19th century. The fine, light colored fibers are long (5 meters). Sunn fibers are used for cords, ropes, fishnets and paper. They have also been used for sacking and carpet backing.

Synonyms and Related Terms

Crotalaria juncea; Indian hemp (also see hemp); Sann hemp; Bombay hemp

Risks

• Combustible.

Physical and Chemical Properties

• Resistant to water and alkalis.
• Damaged by weak acids and bleaches.
• Fiber length = 5 m.
• Cross section = oval.

Resources and Citations

• G.Cook, Handbook of Textile Fibres:I. Natural Fibres, 5th edition, Merrow Publishing Co., Durham, England, 1984.