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RISS 인기검색어
- 검색키워드
- 저자 : Yiu Lun Alan Tang (검색결과 2 건)
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Yiu Lun Alan Tang,Cheng-hao Lee,Yanming Wang,Chi‑wai Kan 한국섬유공학회 2023 Fibers and polymers Vol.24 No.12
Feasibility and applicability of rhamnolipid (RL) microbial biosurfactant-based reverse micellar non-aqueous system in different solvent medium for dyeing of cotton fabrics was investigated. In this study, several solvents, including heptane, octane, nonane, decamethylcyclopentasiloxane (D5), and paraffin liquid (PL), were chosen as the dyeing medium for non-aqueous dyeing of cotton fabrics with fixed dyeing parameters. The dyeing properties of these RL reverse micellar dyed samples in different solvent medium were examined and compared with the conventional water-dyed samples in terms of color yield (K/Ssum value), CIE L*a*b* values, color levelness and reflectance. Most non-aqueous RL reverse micellar dyed samples exhibited better color yield than conventional water-dyed samples. The surface morphology of dyed cotton samples and the dye encapsulation morphology in different solvent medium were observed by SEM and TEM, respectively. Most non-aqueous dyed samples yielded good to excellent levelness comparable to water-dyed samples. However, poor levelness and bad levelness were found for D5-and PL-dyed samples. Further modification of dyeing parameters would be needed to obtain the best dyeing results for D5-dyed and PL-dyed samples.
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Alan Yiu Lun Tang,Cheng-hao Lee,Yanming Wang,Chi‑wai Kan 한국섬유공학회 2023 Fibers and polymers Vol.24 No.2
The feasibility of computer colour matching (CCM) of rhamnolipid-based reverse micellar dyeing system on cotton fibre inoctane media has been investigated and compared with that of conventional water-based dyeing system. Calibration resultsconfirm that the calibration curves of both systems are linear in structure. Reflectance curves reveal that both water-dyedand RL octane-dyed standard and batch samples are identical in shape without any peak shift and alteration of colour properties. The actual colour matching results of RL octane reverse micellar dyeing system are close to theoretical predictionwith percentage difference less than 25%, verifying the applicability of CCM on RL reverse micellar dyeing system. RLoctane-dyed samples can achieve good to excellent levelness, washing and rubbing fastness, which are comparable to thatof water-dyed samples. Further experiments have been conducted to analyse the zeta-potential surface charge, particle sizedistribution and Raman spectra of RL. Volatile organic compound (VOC) detection and solvent recovery have also beenconducted. Experimental results reveal that the leakage of octane solvent is between 2 and 3 ppm which is at acceptably lowlevel whilst more than 98% of octane can be recovered for further use after the RL reverse micellar dyeing process, validatingthe environmental friendliness potential of the RL octane reverse micellar dyeing system.
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