PAPER TITLE :THE USE OF THE BARK OF BYROSCARPUS COCCINEUS SCHUM AND THUNN AS NATURAL DYE SOURCE FOR NATURAL AND SYNTHETIC FIBRES

FUTA JOURNAL OF RESEARCH IN SCIENCE | VOLUME 15 NUMBER 1 2019

Paper Details

  • Author(s) : J.O Otutu
  • Abstract:

Natural colourant was extracted from the bark of Byrsocarpus Coccineus Schum. Thunn. Analysis of the designed experiment showed that extraction could reach an optimal production of natural colourants when extraction was carried out at 100 oC for 4 hrs in the presence of 15 gl-1 of sodium hydroxide solution under reflux. The extracted natural colourant was applied to the dyeing of polyethylene terephthalate (PET), nylon 6, and cotton fabrics using different methods, with or without a mordant. It was found that mordants had a significant effect on the colour of dyed textile fabrics (PET, nylon 6, and cotton). The textile fabrics dyed with the pre-mordant technique using Copper Sulphate, stannous chloride and Potassium dichromate showed higher fastness performance compared to the other mordants. An interesting aspect of the results is that a light fastness of grade 3 (fair) was observed on all the three textile substrates used for the study without using a mordant. The B. Coccineus bark colourant extract gave a bright pink colour on the textile substrates. Thus, the results of this study show that the colourant extract possesses potential affinity for both natural and synthetic fibres and could be exploited in the textile industry.  
 
Keywords: Byroscarpus coccineus, natural dyes, characterization, dyeing methods, fastness properties.