Dyeing Properties of Tussah Silk Fabric with Indigo Naturalis and Turmeric

2011 ◽  
Vol 331 ◽  
pp. 352-355 ◽  
Author(s):  
Xu Hao ◽  
Yan Hua Lu
Keyword(s):  
Ph Value ◽  
Relative Concentration ◽  
Reduction Process ◽  
Silk Fabric ◽  
Single Factor ◽  
Dyeing Properties ◽  
Dyeing Process ◽  
Indigo Naturalis ◽  
Grade 3 ◽  
Single Factor Experiment

Two vegetable dyes of indigo naturalis and turmeric were combined on dyeing tussah silk fabric with two steps. The first step is dyeing the silk fabric with indigo naturalis by reduction process, and then dyed with turmeric by direct dyeing process. The results of single factor experiment on the indigo naturalis dyed tussah silk fabric dyeing with turmeric indicated that the relative concentration, pH value, dyeing temperature, and dyeing time had effect to a certain extent on the over dyeing. The dyeing conditions were determined by the above single factor experiment. The rubbing fastness and washing resistance of the dyed silk fabric could achieve to grade 3 more than grade 3.

Complex Dyeing of Antheraea pernyi Silk with Natural Indigo and Brazilwood

2011 ◽  
Vol 175-176 ◽  
pp. 667-671
Author(s):  
Yan Hua Lu ◽  
Zhao Dan Yang ◽  
Xu Hao
Keyword(s):  
Ph Value ◽  
Silk Fabric ◽  
Single Factor ◽  
Color Strength ◽  
B Values ◽  
Antheraea Pernyi ◽  
Washing Fastness ◽  
Molecule Reaction ◽  
Dyeing Process

To increase the color spectra, two kinds of vegetable dyes of natural indigo and brazilwood were selected for the complex dyeing of Antheraea pernyi (A. pernyi) silk fabric. Based on the structures of the two vegetable dyes, the mechanism of molecule reaction and the principle of the complex dyeing were analysized. The dyeing process was performed on the silk samples with natural indigo before brazilwood, and the optimum dyeing technique was determined by single factor. Based on K/S (color strength), a and b values (index for color style), the effects of the amount of brazilwood, pH value and temperature on the index for color style were discussed. The results showed that the dyeing shade was affected greatly by the concentration of brazilwood, and a series colors including green and grey could be obtained by the dyeing process. It was also found that the complex dyeing process provided A. pernyi silk fabric with the similar rubbing fastness and washing fastness of more than 3 or equal 3.

Study on Dyeing Properties of Black Rice Pigment on Tussah Silk

2013 ◽  
Vol 821-822 ◽  
pp. 626-629 ◽  
Author(s):  
Yan Mei Jia
Keyword(s):  
Ph Value ◽  
Visible Spectrum ◽  
Black Rice ◽  
Natural Pigment ◽  
Dyeing Properties ◽  
Dyeing Process ◽  
The Stability ◽  
Dyed Fabric ◽  
Mordant Dyeing ◽  
Color Depth

To enrich the color of natural dyes, a natural pigment was extracted from black rice and used to dye tussah silk. The stability of the extract to mordant ions was investigated by Visible Spectrum and the effect of the dyeing pH, dyeing temperature, dyeing time as well as mordant process on dyeing properties (K/S value) were studied, the optimum dyeing process was obtained. The results show that the optimized direct dyeing process is pH value 4. 5, dyeing at 90 °C for 60 min, the color of dyed fabric various with metal ions. In comparison, the fabric post-mordant dyeing with ferrous sulfate exhibits the higher color depth and better color fastness.

Application of Foam Separation Technology to Tea Saponin Extraction

2014 ◽  
Vol 997 ◽  
pp. 173-177 ◽  
Author(s):  
Yu Qiong Wu
Keyword(s):  
Ph Value ◽  
Optimal Operation ◽  
Enrichment Ratio ◽  
Liquid Volume ◽  
Single Factor ◽  
Separation Technology ◽  
Foam Separation ◽  
Tea Saponin ◽  
Operation Conditions ◽  
Single Factor Experiment

In this paper, a purity of 52.58% crude tea saponin as the research object, through the foam separation technology, tea saponin extraction process was researched. The feed concentration, gas flow rate, liquid volume and pH value were studied through single factor experiment, the rate of recovery and enrichment ratio as evaluation indexes, the single factor experiment results are analyzed, The design of L9 (34) orthogonal test was applied to confirm the optimum condition: the initial feed solution concentration 0.3mg/ml, air velocity 100ml/min, pH value of 6.5, liquid volume 35ml, enrichment ratio of 3.7896, the recovery rate 82.06%. The purity of the product reached 89.48% under the optimal operation conditions. The results showed that the foam separation techniques is applicable to tea saponin extraction.

scholarly journals Indirect anodic oxidation applied for treatment of simulated wastewater containing Cationic Red X-GRL and Disperse Red 3B

2016 ◽  
Vol 7 (2) ◽  
pp. 197-204
Author(s):  
Bo Yang ◽  
Yue Xiang Li ◽  
Jiao Song
Keyword(s):  
Anodic Oxidation ◽  
Ph Value ◽  
Oxygen Demand ◽  
Electrolysis Time ◽  
Single Factor ◽  
Chemical Oxygen Demand Removal ◽  
Ring Structures ◽  
Simulated Wastewater ◽  
Single Factor Experiment ◽  
Dyes Degradation

The treatment of simulated wastewater containing Cationic Red X-GRL (X-GRL) or Disperse Red 3B (DR-3B) dye was carried out by indirect anodic oxidation, using Ti/SnO2 electrodes as the anode. The influences of pH value, voltage, electrolysis time and sodium chloride dosage on the degradation performance were studied by single factor experiment. Furthermore the nitrogen states and UV-Vis spectra in dyes degradation were analyzed. The results showed that under the optimum condition (pH = 3, voltage = 20 V, NaCl = 2.5 g/L), the decolorization and chemical oxygen demand removal of X-GRL were 98% and 67%, respectively; and those of DR-3B were 51% and 61%, respectively. The azo double bond conjugated system in X-GRL is much more easily destroyed than the anthraquinone conjugated system in DR-3B; the aryl ring structures of them can be partially degraded.

Study on Dyeing of the Plasma Modification Silk Fabric in Supercritical Carbon Dioxide

2011 ◽  
Vol 175-176 ◽  
pp. 661-666 ◽  
Author(s):  
Jun Yan ◽  
Lai Jiu Zheng
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Plasma Modification ◽  
Silk Fabric ◽  
Dyeing Process ◽  
Before And After ◽  
Fabric Strength ◽  
Supercritical Carbon

A study has been conducted into the dyeing of silk fabric in supercritical carbon dioxide. In order to reach better dyeing effect, plasma modifying is used to silk. Plasma modifying can decompose disulfide bond of the protein fiber, change the state of scale layer and break silk gum of fiber so that dyestuff could infiltrate. Factors of plasma modifying are fixed, including pH value, processing time. And they affect the values of fabric colour feature and fabric strength. In this work, C.I. Disperse Blue-77 and C.I. Disperse Yellow E-3G are used by combining orthogonal experiment and single factor analysis. During dyeing process, temperature and pressure have a great impact on the result. Modification process and dyeing process are optimized, and the best process is determined. The results presented in this study show dyestuff can infiltrate through modified fabric easily. Through the testing, the washing fastness and rubbing fastness of silk fabric after being modified are improved. The changes between before and after dyeing are analyzed by scanning electron microscope and infrared spectrometer. It is showed that modified fabric obtains a better effect.

Research about the Dyeing Process Design of the Natural Rhubarb Dye on Wool Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 17-22
Author(s):  
Wei Li ◽  
Lei Zhao ◽  
Qian Wen Wang
Keyword(s):  
Ph Value ◽  
Wool Fabric ◽  
Metallic Ions ◽  
Optimum Conditions ◽  
Aluminum Ion ◽  
Dyeing Process ◽  
Orthogonal Experiments ◽  
The Stability ◽  
Mordant Dyeing ◽  
Single Factor Experiment

In this paper，the extraction of rhubarb dye and the stability of rhubarb dye to heat and acetic was investigated. This paper investigated mordant dyeing of the wool fabric with metallic ions Fe2+，Al3+. And the single-factor experiment method and orthogonal experiments were used to study the optimum conditions of pre-mordant dyeing with aluminum ion. As a result, the stability of rhubarb dye to heat and acetic was very good. The optimum conditions of pre-mordant dyeing with aluminum ion was the bath ratio of 1:25, dyeing temperature of 90°C, ph value of 5, and the concentration of aluminum mordant was 5 percent of the fabric and the concentration of the natural dye rhubarb was 60 percent of the fabric.

Study on Adsorption of Vinasse for Ag+

2013 ◽  
Vol 726-731 ◽  
pp. 2956-2959
Author(s):  
Yan Chen ◽  
Jing Wang ◽  
Rong Rong Su ◽  
Jia Quan Rao ◽  
Xiao Yan Lin
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Ph Value ◽  
Freundlich Isotherm ◽  
Ion Concentration ◽  
Single Factor ◽  
Equilibrium Sorption ◽  
Before And After ◽  
Single Factor Experiment ◽  
Maximum Removal

Effects of parameters including pH value, temperature, absorbent dosage, initial ion concentration, and absorbed time, on the removal efficiency of Ag+ from aqueous solution were investigated through single factor experiment. Vinasse before and after adsorption were characterized by IR. The maximum removal efficiency of Ag+ on vinasse is 97%. The equilibrium sorption is well demonstrated by Freundlich isotherm model.

Research on Bleaching Processes of Natural Cane Fiber by Ultrasonic

2012 ◽  
Vol 550-553 ◽  
pp. 565-568
Author(s):  
Zhen Xu Sun ◽  
Yu Ping Zhao ◽  
Ruo Yuan Song ◽  
Yong Fang Qian
Keyword(s):  
Ph Value ◽  
Processing Parameters ◽  
Ultrasonic Frequency ◽  
Single Factor ◽  
Bleaching Effect ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ultrasonic Time ◽  
Single Factor Experiment ◽  
Scanning Electron

The effects of ultrasonic on bleaching of cane fiber were discussed in this paper. Ultrasonic frequency, ultrasonic time, the concentration of the hydrogen peroxide, temperature and pH value were optimized by the single factor experiment. The bleached fiber was analyzed by X-ray diffraction and Scanning electron microscope. The results showed the optimum processing parameters as follows: ultrasonic time 40 min, ultrasonic frequency 33 KHz (first 20 min); 55 KHz (second 20 min), temperature 90°C and the concentration of the hydrogen 30 ml/L, pH value 10.5. In the above conditions, the best bleaching effect was achieved.

Optimizing the Extraction Process of Rubusoside from the Rubus Suavissimus: A Cellulase Pretreatment Approach

2014 ◽  
Vol 707 ◽  
pp. 144-148 ◽  
Author(s):  
Xiao Hong Zhu ◽  
Ming Xia ◽  
Chun Xing Yang
Keyword(s):  
Optimal Condition ◽  
Extraction Efficiency ◽  
Ph Value ◽  
Extraction Process ◽  
Orthogonal Test ◽  
Single Factor ◽  
Enzyme Substrate ◽  
Substrate Ratio ◽  
A New Technique ◽  
Single Factor Experiment

The paper discussed the extraction process of rubusoside from Rubus suavissimus using a new technique named cellulase pretreatment approach. First, the parameters of cellulose which generate the optimized condition for the extraction of rubusoside from Rubus suavissimus were identified. Under the most optimal condition, the extraction efficiency is maximal. The parameters include pH value,temperature and enzyme-substrate ratio. Second, single factor experiment and an orthogonal test then could be conducted to obtain the optimized condition for the extraction process with the assistances of cellulose. The parameters under the optimized condition were determined as following: ethanol as solvent, 1.2% cellulose, 40°C, pH 4.8 and duration 25 minutes. The result shows that the extraction efficiency of rubusoside is 10.81%.

Study on Extracting of Sappanwood Natural Dye by Cellulase

2011 ◽  
Vol 287-290 ◽  
pp. 2697-2700
Author(s):  
Song Qi Liu ◽  
Xue Han ◽  
Ke Ying Yang ◽  
Yong Zhu Cui
Keyword(s):  
Factor Analysis ◽  
Water Extract ◽  
Natural Dye ◽  
Silk Fabric ◽  
Analysis Method ◽  
Mass Ratio ◽  
Single Factor ◽  
Enzymatic Process ◽  
Single Factor Analysis ◽  
Grade 3

The conditions for extracting sappanwood pigment by cellulase were investigated. The results showed that, compared with traditional water extract method, the absorbance of sappanwood extract raised 35%. Single factor analysis method was done to the enzymatic process, and the optimal extracting conditions were bath ratio 20: 1, mass ratio of sappanwood and cellulase 100:1, enzymolysis at 50°C for 80min, extract at 80°C for 60min. Silk fabric was dyed with the sappanwood extract, the fastness was above grade 3-4.

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