Extraction of Natural Dyes for Textile Dyeing from the By-Products of the Timber Industry

J. O. Otutu¹*, E. Osabohien¹ and E. M. Efurhievwe²

1Department of Chemistry, Delta State University, PMB 1, Abraka. Delta Nigeria.

²Petroleum Products and Quality Control Laboratory, Nigerian National Petroleum Company, Ekpan, Warri Nigeria.

Corresponding Author email: osabohieneemma@yahoo.com

ABSTRACT: The timber industry releases considerable amount of wastes which contain natural dyes. Such wastes could serve as sources for the extraction of natural dyes for textile dyeing operations. The extraction of various shades of brown colours from the bark of woods meant for the timber industry is of interest. By-products such as barks of wood were collected from Abura (Bahia elolom) and Ghana obeche (Triplochiton scleroxylon). They were grounded into powder and extracted and test dyeing on cotton, nylon 66 and acrylic fabrics were performed. The extracts were applied as direct dyes and in the presence of copper Sulphate or iron (II) Sulphate, Tin (II) chloride and potassium dichromate as mordants. The results prove the potential of such waste as a source for dyestuff extraction. To obtain textile dyeing with acceptable fastness properties, however, rigorous selection of dyes and development of suited processes is required. A considerable number of brown natural dyes need further research to optimize the low level of fastness to light.

KEYWORDS: Timber industry; natural dyes; textile dyeing; fastness; natural and synthetic fibres

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