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Md Luthfar Rahman Liman,M. Tauhidul Islam,Md. Milon Hossain,Priti Sarker 한국섬유공학회 2020 Fibers and polymers Vol.21 No.10
The practice of natural colorants for polyester fabric dyeing has been rampantly rising in our consumer fashion. Inthis study, two separate natural colorants were extracted from watermelon (Citrullus lanatus) rind (WRS) and flesh (WFS)for polyester coloration. The optical and colorimetric properties of saps and dyed fabrics, dye fiber bonding phenomena,chromophores diffusion behaviors, color-fastness, ecological and economic aspects were examined through various analysesand the corresponding mechanisms were proposed. A wide range of chromophores diffusion was noticed for severalparameter variations and the resulting diffusions were ranging from 42.67 to 83.13 %. Interestingly, WRS and WFS robustthe UV shielding properties into the dyed fabric and the recorded UPF rating was found to be above 50. All color-fastnessproperties including sublimations were very good to excellent (4 to 4/5) except lightfastness. Finally, the ecological andeconomic aspects of WRS/WFS dyeing were also compared with commercial disperse dyes.