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Cheng Chen,Min Li,Chunxia Wang,Shaohai Fu,Wenjun Yan,Chuansheng Chen 한국섬유공학회 2018 Fibers and polymers Vol.19 No.6
The wool fabrics were treated by ultraviolet (UV) radiation and then dyed with Camellia sinensis (L.) O. Ktze var. waldensae (S.Y.Hu) Chang (yellow-bud tea) extract using meta-mordant dyeing method. The results indicated that the hydrophilicity of wool fabrics was improved after UV radiation treatment, which was conducive in improving color performance for the meta-mordant dyeing with yellow-bud tea extract of wool fabrics. The optimal dyeing process was that the powdered extract (5.0 % o.w.f) and the CuSO4 (2.0 % o.w.f) were added to the dyeing liquor, the pH value was adjusted to 3.5-4.0 by HCOOH, the wool fabrics treated by UV radiation for 10 min and then were dyed at a bath ratio of 1:50 under 95 oC for 70 min. By means of three-factor quadratic current rotation revolving design (TQCRRD) method, the computation results of the mathematical equations and models indicated that UV radiation was the most important factor for meta-CuSO4 dyeing with yellow-bud tea extract for wool fabrics.
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Yi Yang,Min Li,Aijun Tang,Yayun Liu,Zhen Li,Shaohai Fu 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8
Conventional colored latex particles have poor solvent resistance due to the absence of chemical bonds betweenthe dye and polymer component, resulting in staining and greatly restricting its application. In this research, the disperse dyewas chemically bonded to the polymer to prepare covalent and solvent-resistance colored latex particles. Firstly, C.I. DisperseRed 60, as a common disperse dye in industry, was modified by acryloyl chloride (amidation reaction) for the purpose ofintroducing the C=C bonds. The structure of modified C.I. Disperse Red 60 was confirmed by 1HNMR, FTIR and elementalanalysis and its spectral property was also evaluated. Then the covalent colored latex particles were synthesized via miniemulsioncopolymerization of styrene (St) and ethyl acrylate (EA) in presence of modified C.I. Disperse Red 60 monomer. Results of FTIR, TG, DSC and TEM indicated that the covalent colored latex particles were successfully prepared. By usingUV-spectroscopy, the solvent resistance of the colored latex membranes in petroleum ether, hexane, cyclohexane, and ethanolwas monitored, respectively. Slight change of the absorption was detected for 10 days, which verified the excellent solventresistance of covalent colored latex membranes. Finally, the prepared colored latex particles were applied on cotton printingin the absence of binder. The results showed that the colored latex particles printed fabric had superior rubbing fastness andsoft hand feel.
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