Abstratc:
The ability to add value to waste materials from industrial operations has come to the attention of the wood processing industry, with reports, for example, of extracts from the bark tree conveying colour and UV protection to textile fibres. The objective of the present work was to expand our developments in this arena by using Copaifera langsdorffii Desf. bark extract as a natural dye for textile dyeing. A complete 23 -statistical experimental design and the central point was elaborated. The results showed that the optimal dyeing conditions were 98 C, for 60 min, using undiluted bark extract. The dyed fabric was analysed by a spectrophotometer using the CIELAB system for evaluation of the colour strength. The results showed a K/S value of 5.78, and the dyed fabric had good colour fastness to rubbing and washing.
Reference:
SILVA, Patricia Muniz dos Santos; FRANÇA Vitória Hamawaki; QUEIROZ, Rayana Santiago de; LIMA, Fernando Soares de; FREEMAN, Harold S.; COSTA, Silgia Aparecida da; COSTA, Sirlene Maria da. Copaifera langsdorffi Desf. bark extract: optimisation of dyeing conditions to wool and colour fastness properties. Natural Product Research, 2021.
Access to the Abstract of the article on the Journal website:
https://doi.org/10.1080/14786419.2021.1872567
The ability to add value to waste materials from industrial operations has come to the attention of the wood processing industry, with reports, for example, of extracts from the bark tree conveying colour and UV protection to textile fibres. The objective of the present work was to expand our developments in this arena by using Copaifera langsdorffii Desf. bark extract as a natural dye for textile dyeing. A complete 23 -statistical experimental design and the central point was elaborated. The results showed that the optimal dyeing conditions were 98 C, for 60 min, using undiluted bark extract. The dyed fabric was analysed by a spectrophotometer using the CIELAB system for evaluation of the colour strength. The results showed a K/S value of 5.78, and the dyed fabric had good colour fastness to rubbing and washing.
Reference:
SILVA, Patricia Muniz dos Santos; FRANÇA Vitória Hamawaki; QUEIROZ, Rayana Santiago de; LIMA, Fernando Soares de; FREEMAN, Harold S.; COSTA, Silgia Aparecida da; COSTA, Sirlene Maria da. Copaifera langsdorffi Desf. bark extract: optimisation of dyeing conditions to wool and colour fastness properties. Natural Product Research, 2021.
Access to the Abstract of the article on the Journal website:
https://doi.org/10.1080/14786419.2021.1872567
