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Subject: Textile and Apparel Designing × Author: Borah, Priyanka × Start date: 2000 ×
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    ThesisItemOpen Access
    Utilization of Agro-Industrial Waste Punica granatum Rind for Dyeing of Cotton Fabric
    (2023) Borah, Priyanka; Boruah, Rickey Rani
    Huge quantities of residues are produced every year by agricultural-based industries.Without a proper disposal procedure; these wastes have the potential to harm the environment, affecting both human and animal life in the ecosystem. The ever-increasing amounts of such industrial wastes are a big threat to the environment. Nature, unlike any other source, has a wonderful visual device for sensing the seven shades of the colour spectrum. Hence, it is considered as the most abundant source of colours. Use of natural dyes has increased several folds in the past few years due to the eco-friendly approach of the people. Natural dyes have been the vital source of colouration by craft dyers and printers since time immemorial. Natural dyes are substantive and require a mordant to fix to the fabric, prevent the colour from either fading with exposure to light or washing out.The present investigation entitled “Utilization of Agro- Industrial Waste Punica granatum Rind for Dyeing of Cotton Fabric” was conducted during the year 2021-23. In this study dyeing of cotton fabric was done using Punica granatum Rind with the following objectives: 1. Optimization of dyeing conditions from Agro- Industrial waste Punica granatum rind dye on cotton fabric. 2. Analysis of properties of dyed fabrics. For the study, Agro- Industrial Waste Punica granatum Rind, mordants such as alum, myrobalan and banana pseudo stem were selected for the study. The cotton fabric was selected to carry out the dyeing. For extraction of Punica granatum Rind dye, 0.6% optimized alkaline medium with highest optical density 1.55 was taken for extraction of dye at 100ºC for 75 minutes. The dyeing of cotton fabric was done using 3% dye at 70ºC for 60 minutes. The different shades of colours like beige and brown colourwere obtained after dyeing of cotton fabric with Punica granatum rind dye using three different mordants such as myrobalan, alum and banana pseudo stem. Colourfastness tests namely, colourfastness to sunlight, colourfastness to washing, colourfastness to crocking and colourfastness to pressing were assessed for dyed cotton fabrics and they demonstrated very fair to good ratings, and there was little to no staining of the colour. FTIR analysis indicated the peaks shows different functional groups like -OH, C=C, N-H and C-H, double bonds or aromatic compounds, saturated aliphatic compound, aromatic ring, phenol, alcohol, ether, amine and carbonyl compounds in all the mordanted, non mordanted and control cotton fabric. The morphological, structural characteristics of control and dyed cotton fabrics were assessed using SEM and the differences in morphology were clearly visible. The colour strength (K/S) value of dyed cotton fabric was calculated and found that alum mordanted dyed fabric had the greatest K/S value (3.06). Hence alum mordanted fabric showed darker colour. The non mordanted and different mordanted cotton fabrics were found to be increased in terms of fabric count (nos.), fabric thickness (mm), fabric stiffness (cm), fabric wicking height (cm) and moisture regain (%) than control cotton fabric. The tenacity and elongation, crease recovery (angle) of dyed fabrics were decreased due to breakdown of intermolecular forces during dyeing and other processes. Ultra-violet protection properties were increases in dyed cotton fabric. The highest Ultra-violet protection property was observed by alum mordanted cotton fabric followed by myrobalan, banana pseudo stem, non mordanted and control cotton fabric. After 5th and 10th wash, the ultra violet protection properties was found to be decreased in dyed fabric.The investigator developed three different products from the dyed cotton fabric namely, Kaftan top, Parallel pant and shirt andthe assessing of the prepared products were done by using research schedule.