Research on Anti-Felting Finishing Process of Wool Knitted Fabric with Protease

2011 ◽  
Vol 383-390 ◽  
pp. 5492-5495 ◽  
Author(s):  
Hua E Wang
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Acid Protease ◽  
Process Conditions ◽  
Knitted Fabric ◽  
Optimal Process ◽  
Technical Parameters ◽  
Finishing Process ◽  
Protease Treatment ◽  
Energy Saving Technology

In this paper, acid protease treatment was studied on anti-felting finishing of wool knitted fabric and the optimal process conditions were obtained by orthogonal experiment. The technical parameters were hydrogen peroxide concentration 40mL/L, temperature 45°C, time 45min, pH value 8, concentration of protease 5 % (owf), pH value 5, temperature 40°C and time 35min. Through this process, the felt resistance property of wool knitted fabric has been improved greatly. Because of low temperature, energy consumption, environmental pollution, this process belongs to environmental protection and energy saving technology.

scholarly journals Study on Aqueous Enzymatic Extraction Process of Common Pistache Oil

2021 ◽  
Vol 251 ◽  
pp. 02058
Author(s):  
Feng Xuehua ◽  
Tao Ali ◽  
Song Zurong ◽  
Gong Panpan
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Extraction Process ◽  
Optimal Time ◽  
Process Conditions ◽  
Optimal Process ◽  
Enzymatic Extraction ◽  
Hydrolysis Time ◽  
Aqueous Enzymatic Extraction ◽  
The Common

The aqueous enzymatic method was applied to extract the common pistache oil and the optimal extraction process conditions were identified. By observing the effect of enzymatic hydrolysis time, pH value, temperature on aqueous enzymatic extraction process and performing the orthogonal experiment based on the single factor test, the optimal process parameters were obtained, namely, the optimal time, temperature, and pH value were respectively 3 h, 50℃, and 7 with a final extraction rate of 25.38 %.

Application of Polycarboxylic Acid Anti-Crease Finishing Agent for Silk

2014 ◽  
Vol 936 ◽  
pp. 1605-1608 ◽  
Author(s):  
Lei Xu
Keyword(s):  
Magnesium Chloride ◽  
Orthogonal Experiment ◽  
High Strength ◽  
Process Conditions ◽  
Polycarboxylic Acid ◽  
Optimal Process ◽  
Finishing Process ◽  
Finishing Agent ◽  
Silk Fabrics ◽  
Strength Retention

Polycarboxylic acid anti-crease finishing agent is used to finish silk. The optimal finishing process was selected through orthogonal experiment. The optimal process conditions were as follows. The optimal concentration of both finishing agent Y and magnesium chloride was 100g/L. The optimal baking temperature and baking time were 160 °C and 3min, respectively. The results show that the silk fabrics treated by finishing agent Y had high strength retention and washing fastness. In addition, the effect of ant-crease finishing on the whiteness of fabrics was small.

Study on the Enzyme Desizing Process for Cotton Fabric Using Ultrasonication

2011 ◽  
Vol 331 ◽  
pp. 261-264 ◽  
Author(s):  
Qi Ming Zhao ◽  
Shan Yan Zhang
Keyword(s):  
Cotton Fabric ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Research Result ◽  
Strength Loss ◽  
Cotton Fabrics ◽  
Optimum Process ◽  
Process Conditions ◽  
Fabric Strength ◽  
Enzyme Dosage

The auxiliary devices of ultrasonic treatment was designed and manufactured. The cotton fabric was desized using 2000L desizing enzyme with the conventional enzyme desizing process and ultrasonic enzyme desizing process respectively. Through the orthogonal experiment, the optimum process conditions of conventional enzyme desizing process and ultrasonic enzyme desizing process were determined. For the conventional enzyme desizing process, the optimized desizing conditions of cotton fabrics were: desizing enzyme dosage was 1.5g/l, temperature was 80°C, PH value was 6, and time was 60mins. The optimum process conditions of ultrasonic enzyme desizing process were: desizing enzyme dosage was 1.5g/l, temperature was 50°C, PH value was 6 and time was 45minutes. The research result indicates that, under the same desizing condition, ultrasonication can improve the desizing percentage and whiteness of cotton fabric, but the fabric strength loss increases slightly. And for the same required desizing percentage, the ultrasonic enzyme desizing process saved time and reduced the temperature of experiments compared with traditional enzyme desizing process

scholarly journals Equilibrium modeling of mono and binary sorption of Cu(II) and Zn(II) onto chitosan gel beads

2016 ◽  
Vol 37 (4) ◽  
pp. 485-501 ◽  
Author(s):  
Józef Nastaj ◽  
Małgorzata Tuligłowicz ◽  
Konrad Witkiewicz
Keyword(s):  
Metal Ion ◽  
Ph Value ◽  
Experimental Studies ◽  
Process Conditions ◽  
Optimal Process ◽  
Sorption Data ◽  
Gel Beads ◽  
Two Component ◽  
Equilibrium Data ◽  
Chitosan Gel

Abstract The objective of the work are in-depth experimental studies of Cu(II) and Zn(II) ion removal on chitosan gel beads from both one- and two-component water solutions at the temperature of 303 K. The optimal process conditions such as: pH value, dose of sorbent and contact time were determined. Based on the optimal process conditions, equilibrium and kinetic studies were carried out. The maximum sorption capacities equaled: 191.25 mg/g and 142.88 mg/g for Cu(II) and Zn(II) ions respectively, when the sorbent dose was 10 g/L and the pH of a solution was 5.0 for both heavy metal ions. One-component sorption equilibrium data were successfully presented for six of the most useful three-parameter equilibrium models: Langmuir-Freundlich, Redlich-Peterson, Sips, Koble-Corrigan, Hill and Toth. Extended forms of Langmuir-Freundlich, Koble-Corrigan and Sips models were also well fitted to the two-component equilibrium data obtained for different ratios of concentrations of Cu(II) and Zn(II) ions (1:1, 1:2, 2:1). Experimental sorption data were described by two kinetic models of the pseudo-first and pseudo-second order. Furthermore, an attempt to explain the mechanisms of the divalent metal ion sorption process on chitosan gel beads was undertaken.

scholarly journals Preparation of red elemental nanoselenium by Arabic gum template method

2021 ◽  
Vol 267 ◽  
pp. 02014
Author(s):  
Qingbing Guo ◽  
Xuegui Lin ◽  
Ming He ◽  
Guojie Wu
Keyword(s):  
Particle Size ◽  
Mass Fraction ◽  
Orthogonal Experiment ◽  
Nanometer Scale ◽  
Process Conditions ◽  
Elemental Selenium ◽  
Optimal Process ◽  
Size Change ◽  
Arabic Gum ◽  
Particle Size Analyzer

Red elemental nanoselenium was prepared by reducing sodium selenite with ascorbic acid using Arabic resin as template in this study. The factors effecting on the particle size change of nanoselenium such as reaction time, reactant concentration, template mass fraction and reaction temperature were studied. The orthogonal experiment L9(34) was designed to determine the optimal process conditions. The elemental nanoselenium was characterized by IR and particle size analyzer. The results showed that the stable red elemental selenium with nanometer scale was prepared.

SURFACE FINISHING OF NANOSCRATCH PATTERNS ON COATED PYREX GLASSES USING MAF

2016 ◽  
Vol 24 (04) ◽  
pp. 1750043 ◽  
Author(s):  
SEOUNG HWAN LEE
Keyword(s):  
Acoustic Emission ◽  
Surface Finishing ◽  
Process Conditions ◽  
Optimal Process ◽  
Nanoscale Patterning ◽  
Coated Materials ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
Pile Up ◽  
Coated Surface

We investigate a surface finishing scheme fitted for AFM scratched nanopatterns on a coated surface using magnetic abrasive finishing (MAF). First, nanoscale patterning was carried out on IZO-coated Pyrex glass, with a specially-designed AFM machining setup. After AFM machining, nonuniform surface features such as pile-ups are generated, and the final shapes are often more complicated for coated materials. For this reason, MAF was implemented for the nanoscale removal of pile-up/debris of coated materials and design of experiment (DOE) was utilized to obtain optimal process conditions for the finishing process. The process was monitored using acoustic emission (AE) for coating-substrate (glass) boundary detection, as well for monitoring the polishing status/depth. Experimental results indicate the viability of the proposed scheme as a nanoscale selective finishing technique for various material setups.

The Preparation and Growth Mechanism of Ni-Coated TiH2 Composite Powder by Electroless Plating

2013 ◽  
Vol 743-744 ◽  
pp. 353-359 ◽  
Author(s):  
Jia Qian Hou ◽  
Lai Rong Xiao ◽  
Lei Guo ◽  
Song Song Zhou ◽  
Ruo Fan Wang
Keyword(s):  
Growth Mechanism ◽  
Electroless Plating ◽  
Composite Powder ◽  
Ostwald Ripening ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Layer Growth ◽  
X Ray Diffraction ◽  
Powder Morphology ◽  
Technical Parameters

The Ni-coated TiH2composite powder was prepared by electroless plating and the concentration of reducing agent, reaction temperature, reaction time, PH value and so on were optimized by orthogonal experiment design. The Ni/TiH2composite powder morphology and composition was analyzed by scanning electron microscopy (SEM), Energy Dispersive spectroscopy (EDS), X-ray diffraction (XRD); the plated Ni layer growth mechanism was explored preliminary. The Optimization technical parameters: the plating temperature was 85, the pH value was 10 and the hydrazine concentration was 100ml/L. Complete coating and uniform thickness of the Ni layer with average coating thickness about 2.0μm was successfully prepared with the optimization technical parameters. The growth mechanism of the coating followed the Ostwald ripening mechanism. Compared the TiH2uncoated with Ni layers particles, the TiH2composite powder could efficiently delay the starting time of gas release by approximately 80s.

Effects of Process Conditions on Properties of Nano-Magnetic Fluid

2011 ◽  
Vol 194-196 ◽  
pp. 700-703
Author(s):  
Bing Chen ◽  
Yu Guang Fan
Keyword(s):  
Saturation Magnetization ◽  
Sodium Oleate ◽  
Magnetic Fluid ◽  
Magnetic Particles ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Process Condition ◽  
Nano Particles ◽  
Process Conditions ◽  
Co Precipitation

In order to analyze the influences of process condition on kerosene-based Fe3O4, which are prepared in chemical co-precipitation, orthogonal experiment was used. How process condition influenced the size of nano-particles and saturation magnetization was studied, and the best process condition as 40ml•min-1 NaOH adding speed, 10ml•min-1 sodium oleate adding speed, 45°C reaction temperature, 15min holding time and pH value of 2 of coating sodium oleate was obtained. The performance of magnetic particles was characterized by transmission electron microscopy (TEM) and WSM vibration magnetometer. The diameter of Fe3O4 nano-particles was less than 10nm, saturation magnetization was 2.66×104A•m-1, viscosity of nano-magnetic fluid was 18mPa•s, and density was 1.13×103kg•m-3. This research enhanced the foundation of using nano-magnetic fluid.

scholarly journals Nanomaterial Antibacterial Technology in the Design of Antibacterial Fabrics for Sports Clothing

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yuan Feng
Keyword(s):  
Ph Value ◽  
Knitted Fabric ◽  
Nano Tio2 ◽  
Dispersing Agent ◽  
Antibacterial Textiles ◽  
Finishing Process ◽  
Stirring Time ◽  
Finishing Agent ◽  
Dispersing Medium ◽  
Selection Of

In recent years, nanomaterials have been widely used in sports equipment, and their application in sportswear has also attracted wide attention. This research mainly discusses the application of nanomaterial antibacterial technology in the design of antibacterial fabrics for sports apparel. The method of adding nano-TiO2 to the antibacterial textiles varies with the type of fiber or fabric, and the finishing method also changes accordingly. For chemical fibers, the method of blending spinning is mainly used. By adding nano-antibacterial particles in the spinning solution, the polymer is ejected from the spinneret to make antibacterial fibers. This processing method is characterized by good antibacterial durability. The preparation of antimite finishing agent is mainly the dispersion of nanopowder. The selection of the best dispersant is mainly determined by measuring the change of the volume sedimentation rate of TiO2 after 5 days under different dosage and pH value of each dispersant. Then, the particle size of nano-TiO2 and Ag in different dispersing conditions was tested by TEM, and finally, the best dispersing agent and dispersing process were determined. The optimum of nano-antimite and antibacterial finishing agent is as follows: the dispersing agent is TW-80, the amount of anhydrous ethanol in dispersing medium is 5 times that of powder, the amount of dispersing agent is 1.5 times that of powder, the pH value is 7, and the stirring time is not less than 30 min. In the preparation of nano-antimite and antibacterial finishing agent, nanomaterials were used. The weight of nano-TiO2 powder was 20 grams and that of Ag was 20 grams. The dispersion medium (absolute ethanol) was 100 mL of dispersant. The amount of TW-80 was 30 g, the amount of citric acid was 60 g, the emulsion was very stable, and there was only a small amount of precipitation after being static for 5 days. Considering the characteristics of silk knitted fabric, this experiment uses the exhaustion method in the finishing process to finish the silk knitted fabric. After 50 times of washing, the antibacterial rate of Staphylococcus aureus and Escherichia coli reached 95.13% and 87.44%, respectively. This study provides guidance for the application of nanomaterials in the antibacterial field of sports clothing.

Study on Treatment of Acetylspiramycin Pharmaceutical Wastewater by the Photo-Fenton Oxidation Process

2010 ◽  
Vol 113-116 ◽  
pp. 512-515
Author(s):  
Rong Jun Su ◽  
Peng Wang ◽  
Li Ming Jiang ◽  
Fang Gu
Keyword(s):  
Ph Value ◽  
Removal Rate ◽  
Orthogonal Experiment ◽  
Volume Ratio ◽  
Process Conditions ◽  
Oxidation Reactions ◽  
Pharmaceutical Wastewater ◽  
Total Removal ◽  
Fenton Oxidation Process ◽  
Single Factor Experiment

Acetylspiramycin pharmaceutical wastewater is a kind of biorefractory organic wastewater. It is meaningful academically and actually that the Photo-Fenton method is used in the oxidation and degradation of the effluent water. After pretreatment of the wastewater with COD 6169mg/L, the oxidation reactions were proceeded which the oxidation effects were evaluated by the changes of COD and BOD5. Orthogonal experiment was applied based on the single factor experiment, the optimal process conditions were determined as follows, the volume ratio of H2O¬2: FeSO4•7H2O 1:1, the dosage of FeSO4•7H2O 7.8mmol/L, the pH value 3.0 and on the solar ray radiation respectively. Under the said conditions, the ratio of BOD5/COD went from 0.15 to 0.24 indicating that biodegradability had improved. Meanwhile COD reduced largely. The removal rate of COD calculated on this stage reached 78.9%. Added to the former pretreatment process, the total removal rate of COD was up to 88.6%. It was higher than other disposal technologies of antibiotic pharmaceutical wastewater and displayed a promising future.

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