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Zhao Y.,Zhejiang Sci-Tech University | He Y.,Zhejiang Sci-Tech University | Xue G.,Zhejiang Sci-Tech University | Lei X.,Hangzhou Dianzi University | And 2 more authors.
Advanced Materials Research | Year: 2011

With the continuous improvement of environmental protection requirements, the discharge of secondary fiber industry including waste water, gas and sludge were controlled more strictly. The toxicity studies on coated white board effluents of secondary fiber were carried out by using optimized photo bacteria method. The results showed that the value of EC50 for acute toxicity in coated white board effluents, which were produced from liners effluents and integrated effluents, were 85.50% and 89.77% respectively, reached the level of Moderately Toxic, by contraries from barrier coating effluents, was 157.57%, belong to Non-Toxic Class. Therefore, it should be pay more attention to the toxicity and toxicity emission load of coated white board effluents. Additionally, it can be seen from the analysis of organic compositions that key toxicant produced by liners effluents was diethyl phthalate. And there were no key toxicants of barrier coating effluents. © (2011) Trans Tech Publications. Source


Yao G.,Zhejiang Sci-Tech University | Zheng J.,Zhejiang Sci-Tech University | Zheng J.,Engineering Research Center for Eco Dyeing and Finishing of Textiles | Chen H.,Zhejiang Sci-Tech University
Advanced Materials Research | Year: 2011

Vitamin E (VE) microcapsules with polyurethane (PU) shell are successfully prepared via interfacial polymerization of polyurethane with toluene-2,4-diisocyanate (TDI) as the isocyanate, polyethylene glycol as the polyol, and 1,4-butanediol (BD) as the chain extender. In the preparation process, VE emulsion, prepolymer and microencapsulation of VE are studied using a particle size analyzer, butylamine titration, optical microscopy (OM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Based on the present research, VE microcapsules prepared have smooth surfaces and spherical appearances, the mean particle size of about 550 nm. Vitamin E microcapsules have been glued effectively to textiles, and a kind of skin-care product has been developed. © (2011) Trans Tech Publications, Switzerland. Source


Zhao X.-J.,Engineering Research Center for Eco Dyeing and Finishing of Textiles | Cui Z.-H.,Engineering Research Center for Eco Dyeing and Finishing of Textiles | Cui Z.-H.,Key Laboratory of Advanced Textile Materials and Manufacturing Technology | Wang R.-L.,Zhejiang Longsheng Group Co. | And 4 more authors.
Chinese Chemical Letters | Year: 2015

Under the guidance of the finding that the tyrosine residues in proteins could undergo three-component Mannich-type reactions with formaldehyde and electron-rich aniline-containing compounds, which forms covalent bonding connections between the protein of interest and the aniline with high levels of selectivity under relatively mild conditions, an orange aromatic primary amine-containing acid dye AMODB was designed and readily synthesized. The molecular structure was characterized by FTIR, 1H NMR, mass spectrometry and elemental analysis. The synthesized dye and a similar control dye (C.I. Acid Yellow 11) without primary amine groups were applied to dye silk fabric by three dyeing processes: Mannich-type dyeing (with and without the addition of formaldehyde) and acidic dyeing. Their washing and rubbing fastness properties with different dyeing methods were examined and compared. It was found that the dyed silk fabric with AMODB by the Mannich-type dyeing showed higher color depth, better anti-stripping ability to DMF and better washing fastness than those of the dyed silk fabric with C.I. Acid Yellow 11 by acidic dyeing due to the covalent bond formation between the dye chromophore of AMODB and silk fiber. In addition, mild Mannich dyeing conditions suitable for silk (AMODB at 3% owf, 75:1 liquor-to-goods ratio, dyebath pH 5.5, 30 °C, 10 h) were provided. © 2014 Zhi-Hua Cui. Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. All rights reserved. Source


Chen W.G.,Zhejiang Sci-Tech University | Chen W.G.,Engineering Research Center for Eco Dyeing and Finishing of Textiles | Wang Z.Q.,Engineering Research Center for Eco Dyeing and Finishing of Textiles | Wang Z.Q.,Anhui Polytechnic University | And 3 more authors.
Advanced Materials Research | Year: 2013

High wet fastness dyeing is always the hot issue of silk industry. The plenty of tyrosine residue in silk protein may contribute an opportunity to solve this problem. In this paper, in situ coloration of silk is described using coupling reaction between diazonium compounds, made from different arylamine derivatives, and tyrosine residues in the silk fibroin. The spectra of coloured silk and the washing and rubbing fastness were measured. The results suggest that the use of coupling reactions could be developed into a dyeing method for silk. The wet fastness properties of such coloration are good because the chromophores are incorporated into the protein chains. © (2013) Trans Tech Publications, Switzerland. Source


Chen W.,Zhejiang Sci-Tech University | Chen W.,Engineering Research Center for Eco Dyeing and Finishing of Textiles | Wang Z.,Zhejiang Sci-Tech University | Wang Z.,Anhui Polytechnic University | And 5 more authors.
Fibers and Polymers | Year: 2014

This paper describes how coloration of silk can be achieved using a coupling reaction between a diazonium compound, made from Color Base Red G (C.I. 37105) and tyrosine residues in the silk protein fibroin. A pigment with an azo structure obtained from the reaction between the diazonium of Color Base Red G with p-methylphenol was synthesized and studied as a model compound for the coloration reaction. The colored materials were characterized using UV-vis, FT-Raman, FT-IR, 1H-NMR, and mass spectroscopy. Both the colored silk and the model compound gave yellow colors with absorption maxima in the region of 400 nm. The results suggest that the use of coupling reactions could be developed into a dyeing method for protein fibers or other protein materials that contain tyrosine residues. Because the chromophores are incorporated into the protein chains, such dyed silks should have good wet fastness properties. © 2014 The Korean Fiber Society and Springer Science+Business Media Dordrecht. Source

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