Work

Investigation into the Application of Natural Dyes Obtained from Annatto Seeds and Eucalyptus Leaves in Dyeing Textile Substrates Using Biomordants

Year: 2025

Type: article

Abstract: This study evaluated dried eucalyptus leaf extract and annatto seed extract as natural dyes for cotton, polyamide, and polyester knit fabrics. The eucalyptus leaf extract was obtained by aqueous boiling extraction, while the annatto seed extract was prepared in an alcoholic medium at 60 °C. Dyeing was carried out on fabrics mordanted with lemon juice and soy milk, using a cup dyeing machine with infrared (IR) heating at 98 °C for 30 min. SEM and FTIR analyses assessed the results regarding color intensity and color fastness. The findings indicate that both extracts can serve as sustainable alternatives for textile dyeing.

Source: Colorants

DOI: 10.3390/colorants4030026

Authors: Louise de Sousa Barbosa, Sophia Helena Alves, Brenno Henrique Silva Felipe, Carlos Rafael Silva de Oliveira, Catia Rosana Lange de Aguiar

Institution: Universidade Federal de Santa Catarina

Language: English

Topic: Dyeing and Modifying Textile Fibers

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: gold

Estimated APC paid: $1,207