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- Title
Ecological risk assessment and health safety speculation during color fastness properties enhancement of natural dyed cotton through metallic mordants.
- Authors
Repon, Md.; Islam, M.; Mamun, Md.
- Abstract
Variety and durability of color are presumed as key constrains of natural dyes. So, this study attempts to investigate the effect of metallic mordants on the color fastness properties of ecologically dyed cotton fabric using banana floral stem sap. Color difference was measured in terms of hue (ΔH*), chroma (ΔL*) and value (ΔC*) difference. Metal ions in residual mordanting bath, dyeing wastewater and level of trace metals in the finished fabric surface were accessed to justify the environmental safety and speculate the health risk respectively. Pre-mordanted specimens were dyed at 100 °C for 60 min. Optical properties of extracted sap were observed by UV visible spectroscopy. Dye fixation with fiber was determined by FTIR-ATR spectra. Atomic absorption spectroscopy was employed to determine the trace metals in finished fabric. Effect of metallic mordants were calculated in terms of color fastness to wash, water, perspiration, rubbing and light for estimating the color durability. Except light fastness property almost all color fastness values were 4/5, i.e. very good. Light fastness properties were improved for mordanting action with metallic salts. The level of trace metals in finished fabric were within the safe zone.
- Subjects
ECOLOGICAL risk assessment; COLORFASTNESS (Textiles); NATURAL dyes &; dyeing; COTTON; MORDANTS
- Publication
Fashion & Textiles (2198-0802), 2017, Vol 4, Issue 1, p1
- ISSN
2198-0802
- Publication type
Article
- DOI
10.1186/s40691-017-0109-x