Abstract
Temperature has a promising role in textile coloration process. This study intends to optimize the dyeing temperature for sustainable coloration of cotton fabric employing banana waste. Natural dye retrieved from banana floral stem by roller squeezer machine. To explore the effect of temperature, samples were dyed for 60℃, 70℃, 80℃, 90℃, 100℃ and 110℃ respectively by keeping constant time at 60 minutes. Effect of temperature variation on colorimetric appearance were expressed using CIE L*a*b* color space in terms of color co-ordinates, color strength (K/S), brightness index (BI) and degree of color levelness values. The dye fiber bonding stability was accessed via color fastness to wash, water, perspiration, rubbing and light. Except light fastness property almost color fastness value was 3-5 i.e. good to excellent. Best result of K/S, bright index % and color levelness value recorded 0.65, 50.58 and 0.069 respectively for 100℃. Excellent color fastness properties also appeared for 100℃. This reports prognosis an environmental begins approach for coloration of cotton fabric by deploying of banana plant waste.
Highlights
Chemical processing is irrevocable for textile coloration
This study is a new methodology for textile coloration using green chemistry by banana bio-resources waste
Cotton knitted fabric dyed with banana floral stem sap delivered light shade
Summary
Chemical processing is irrevocable for textile coloration. During textile processing huge amount of various essential dyes and auxiliary chemicals are habitually consumed. In keeping with volume and composition, effluent of textile plants are most polluting amongst all industrial sectors [1, 2]. This huge amount of toxic and hazardous wastewater is discharge into the rivers, canals and water streams resulting in adverse effects on flora and agricultural land and presumed as one of the major sources for environmental pollution [3]. Sustainable textile coloration is possible either by using green ingredients or zero discharge of wastewater [4, 5]
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