Study on Spectroscopic and Dyeing Characteristics of Curcumin on Poly(lactic acid) and Poly(ethylene terephthalate) Fabrics

Abstract

This research aimed to study the use of curcumin as a natural dye for dyeing poly(lactic acid) and poly(ethylene terephthalate) fabrics. The study found that curcumin was dyeable on PLA and PET, providing a brilliant yellow color on the fabric. Curcumin could build up very well on PLA, while lower build up was on PET. At the same applied concentration, higher color yield was observed on the dyed PLA fabric. To achieve the same visual color yield, a significantly lower concentration of curcumin was required for PLA as compared with PET. The color shade of curcumin-dyed PLA differed from the PET analogue. A bathochromic shift of the K/S curve was found when the substrate was changed from PLA to PET. The influence of polymer media on the spectroscopic properties of curcumin could be elucidated by measuring absorbance properties of curcumin in ethyl acetate and methyl benzoate, being representatives of PLA and PET, respectively. At the same concentration, curcumin solution in ethyl acetate exhibited higher absorbance than that in methyl benzoate, corresponding to the deeper shade obtained when dyed on PLA as compared with PET. Bathochromic shift of absorbance curve was also observed when the solvent was changed from ethyl acetate to methyl benzoate.

The potential of juglone as natural dye and indicator for biodegradable polyesters

“…Dyeing of knitted fabrics made of PLA fibers and comparable PET was performed using natural orange, natural red brown, turmeric, and cassumunar dyes. 43,44 Sidarkote et al 45 introduced the dyeing of PLA fabrics by exhaust dyeing with natural indigo dye, Indigofera tinctoria. Emodin natural dyes have also been described to give bright colors and brilliant color fastness on PLA knitted fabrics.…”

A review of progress in the dyeing of eco-friendly aliphatic polyester-based polylactic acid fabrics

“…The study was accomplished on exhaust dyeing of knitted fabrics made from PET and PLA fibers (Sriumaoum et al, 2012). PLA is reported to give higher shade depth with curcumin as compared to PET at the same dye concentration (Sriumaroum et al, 2011). °C for 60 min (Sidarkote et al, 2014).…”

Poly(lactic acid) fibers, yarns and fabrics: Manufacturing, properties and applications

“…It had higher build-up and color yield on PLA than on PET. 144 Natural emodin dye was also used on PLA fabric at 100 C and gave the fabric a brilliant yellow color and excellent soaping and crocking fastness at levels 4-5 and 5. 145 Other natural yellow dyes from turmeric and cassumunar had good dyeing properties and exhibited medium-deep shade and fluorescence emission on PLA fabric.…”