scholarly journals Effect of Ozone Treatment on the Dyeing Properties of Mulberry and Tassar Silk Fabrics

2012 ◽  
Vol 7 (3) ◽  
pp. 155892501200700
Author(s):  
Sargunamani Devaraju ◽  
N. Selvakumar
Keyword(s):  
Treatment Time ◽  
Ozone Treatment ◽  
Dye Uptake ◽  
Dyeing Properties ◽  
Silk Fabrics

Ozone treatment has been carried out on silk fabrics and changes in the properties of the fabrics were reported recently. Further extending the work, in the present study, the dyeing studies of ozone treated mulberry and tassar silk fabrics were carried out using CI Acid Red 88. This type of study has not been carried out before. The results are quantified and expressed in terms of the dye uptake (DU), Equilibrium dye uptake (EDU) and half dyeing time (t1/2). It has been found that the ozone treatment reduced the DU of silk fabrics irrespective of whether they were in a raw or degummed state. The DU was found to be the highest at pH 12. At other pH levels, it was lower and the DU increased as the pH increased from 4 to 7. The lowest DU of ozone treated fabrics was found to be 50% wet pickup (WP) compared to 10% and 100% WP. The higher the treatment time (TT), the lower the DU. the EDU of the treated mulberry and tassar silk materials were lower than the untreated materials.

Dyeing Properties of Lac Dyes for Wool, Silk and Nylon

2011 ◽  
Vol 233-235 ◽  
pp. 817-820
Author(s):  
Bo Wei ◽  
Qiu Yuan Chen ◽  
Ren Cheng Tang ◽  
Guo Qiang Chen
Keyword(s):  
Electrostatic Interaction ◽  
Uptake Rate ◽  
Color Fastness ◽  
Dye Uptake ◽  
Amino Groups ◽  
Dyeing Properties ◽  
Initial Uptake Rate ◽  
Dyed Fabrics ◽  
Initial Uptake

The dyeing properties of lac dyes for wool, silk and nylon fibers were investigated, and compared in terms of dependence of dye uptake on pH, dyeing rates, and building-up performance as well as color hue and color fastness of dyed fabrics. For all the three fibers, the uptake of lac dyes was greatly influenced by pH, indicating that the electrostatic interaction between lac dyes and fibers predominantly contributes to lac adsorption. The maximum adsorption wavelength of dyed fabrics shifted to a higher value with increasing application pH, indicating the existence of bathochromic effect. Lac dyes showed the quickest initial uptake rate for silk, the slowest rate for wool. The capacity of lac uptake by three fibers was in the following order: wool > silk > nylon, this being in accord with the quantity of amino groups in these fibers. Dyed wool exhibited the best color fastness.

Surface Modification of Polystyrene Beads by UV/Ozone Treatment

2011 ◽  
Vol 264-265 ◽  
pp. 1532-1537 ◽  
Author(s):  
A.N. Yusilawati ◽  
M. Maizirwan ◽  
Iis Sopyan ◽  
M.S. Hamzah ◽  
K.H. Ng ◽  
...  
Keyword(s):  
Treatment Time ◽  
Ozone Treatment ◽  
Polystyrene Bead ◽  
Hydroxyl Groups ◽  
Distilled Water ◽  
Polystyrene Beads ◽  
Chemically Modified ◽  
Set Up ◽  
Average Size ◽  
Uv Ozone

It is known that polystyrene must be chemically modified to make its surface amenable to covalent cross-linking with protein. The aim of this study was to set up a UV/Ozone system and investigate the effects of UV/Ozone treatment on polystyrene surface. Microsize polystyrene beads with an average size of 150 μm in diameter were treated with and without distilled water at the same treatment time, ozone flow-rate and UV intensity. The treated beads were analyzed by ATR-FTIR, SEM, EDX and hydrophilicity measurement. The results show that the hydrophilicity of the surface of polystyrene beads was increased after the UV/ozone treatment and the introduction of carbonyl, carboxyl and hydroxyl groups on the polystyrene beads surface was also confirmed. It was demonstrated that the UV/Ozone system was effective for treatment of polystyrene bead and the best result was obtained without distilled water.

The influence of reaction conditions in the oxidation of organic compounds of nuclear laundry water by ozone

2010 ◽  
Vol 61 (10) ◽  
pp. 2557-2561 ◽  
Author(s):  
M. K. Vilve ◽  
M. E. T. Sillanpää
Keyword(s):  
Hydrogen Peroxide ◽  
Organic Carbon ◽  
Chemical Oxygen Demand ◽  
Organic Compounds ◽  
Biochemical Oxygen Demand ◽  
Treatment Time ◽  
Oxygen Demand ◽  
Ozone Treatment ◽  
Reaction Conditions ◽  
Oxidation Of Organic Compounds

This paper presents a summary of degrading organic compounds of nuclear laundry water by ozonation in different conditions of pH, hydrogen peroxide and ultraviolet radiation. The degradation of organic compounds was analysed by chemical oxygen demand (COD), total organic carbon (TOC) and biochemical oxygen demand (BOD). The optimal degradation conditions were at pH 7 with ozone, UV radiation and hydrogen peroxide addition. The transfer of ozone increased significantly, thus resulting in decreased treatment time compared to ozone treatment alone. The reductions of COD, TOC and BOD were 46%, 32% and 70%, respectively.

scholarly journals Application of Ozone Treatment for the Decolorization of the Reactive-Dyed Fabrics in a Pilot-Scale Process—Optimization through Response Surface Methodology

2020 ◽  
Vol 12 (2) ◽  
pp. 471 ◽  
Author(s):  
Ajinkya Sudhir Powar ◽  
Anne Perwuelz ◽  
Nemeshwaree Behary ◽  
Levinh Hoang ◽  
Thierry Aussenac
Keyword(s):  
Mathematical Model ◽  
Textile Industry ◽  
Treatment Time ◽  
Pilot Scale ◽  
Reactive Dye ◽  
Response Surfaces ◽  
Ozone Treatment ◽  
Reactive Black 5 ◽  
Box Behnken Design ◽  
Dyed Fabrics

The decolorization of a cotton fabric dyed with a reactive dye (C.I. Reactive Black 5) was studied using an optimized ozone-assisted process at pilot scale. Box–Behnken design was used to evaluate the effects of three parameters on the decolorization of the dyed textile, namely, pH of the treatment (3–7), ozone concentration (5–85 g/m3 of ozone), and treatment time (10–50 min). The fitted mathematical model allowed us to plot response surfaces as well as isoresponse curves and to determine optimal decolorization conditions. In this study, we have proposed a pilot-scale machine which utilizes ozone for the color stripping of the dyed cotton. This pilot-scale application opens up the route for application of ozone at an industrial scale for achieving sustainability in the textile industry.

Effect of the Fixation Treatment on the Staining Results of Reactive Dyes for Dyeing Bamboo

2014 ◽  
Vol 1078 ◽  
pp. 57-60
Author(s):  
Chun Wang ◽  
Xian Jun Li ◽  
Yun Li ◽  
Xi Yi Cheng ◽  
Xia He
Keyword(s):  
Processing Time ◽  
Treatment Time ◽  
Raw Materials ◽  
Reactive Dyes ◽  
Dye Uptake ◽  
Fixation Rate ◽  
Treatment Conditions ◽  
Variation Range ◽  
Fixation Treatment

In this article, the crushed bamboo bundles were pre-treated with dilute alkali were used as raw materials and then treated with reactive dyes. The influence of the fixing process including Na2CO3 concentration and processing time was studied systematically and an optimized fixing process for dyeing bamboo bundles was obtained. The results showed that:1）These two treatment conditions all can improve the dye uptake and fixation rate; 2）With the increasing of Na2CO3 concentration, the dye uptake and fixation rate are rises gradually and all be increased 20% most, then get the stabilizing when it is 20g / L; The fixation treatment time has little effect on the staining results with the variation range under 7%; 3）The most satisfactory effect could be obtained: The Na2CO3 concentration and processing time is 20g/L and 30min, respectively.

Dyeing Properties of Noni Root Extracts on Silk Fabrics at Various pH Conditions

2014 ◽  
Vol 51 (4) ◽  
pp. 180-185 ◽  
Author(s):  
Joong Hwan Choi ◽  
Umji Hong ◽  
Ran Choi ◽  
Sunpyo Hong ◽  
Joonseok Koh
Keyword(s):  
Dyeing Properties ◽  
Root Extracts ◽  
Ph Conditions ◽  
Silk Fabrics

Dyeing properties of microbial prodiginine from Zooshikella rubidus for silk fabrics

2015 ◽  
Vol 16 (9) ◽  
pp. 1981-1987 ◽  
Author(s):  
Yongsook Kim ◽  
Jongmyoung Choi
Keyword(s):  
Dyeing Properties ◽  
Silk Fabrics

The Effect of Hyperbranched Polymers on the Dyeing Properties of Polypropylene Fibers

2011 ◽  
Vol 399-401 ◽  
pp. 1059-1062
Author(s):  
Xu Huang ◽  
Wei Dong Zhang ◽  
Shun Bin Ma
Keyword(s):  
Physical Properties ◽  
Hyperbranched Polymer ◽  
Polypropylene Fiber ◽  
Fiber Spinning ◽  
Polypropylene Fibers ◽  
Dye Uptake ◽  
Dyeing Properties ◽  
Washing Fastness ◽  
Polar Groups ◽  
Dyed Fabrics

3% hyperbranched polymer was incorporated into polypropylene and dyed with Disperse Blue 2BLN. The observed enhancement of dye uptake can be attributed to the introduction of polar groups. The finding that dye uptake on the modified fiber reached a maximum at 110°C suggests that “saturation” had occurred. While the washing fastness of dyed fabrics made from polypropylene fiber which had been modified with hyperbranched polymer was very good, the fastness of the dyeings to light was poor. The incorporation of 3% hyperbranched polymer into polypropylene prior to fiber spinning had no effect on the physical properties of the fiber，however markedly enhanced the dyeability of polypropylene.

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