Investigation on Dyeing Performances of the Modified Cotton Fabric with Ionic Liquid as Modifier

2014 ◽  
Vol 685 ◽  
pp. 137-140
Author(s):  
Ming Shu Song ◽  
Jie Lin ◽  
De Hong Cheng ◽  
Sheng Lu ◽  
Xu Hao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Cotton Fabric ◽  
Ph Value ◽  
Breaking Strength ◽  
Effect Of Ph ◽  
Untreated Cotton

in this paper the dyeing performances of the modified cotton fabric with ionic liquid 1-butyl-3-methylimizolium chloride as modifier was investigated. The effect of pH value, dosage of ionic liquid, modified time, modified temperature on the dyeing performances of the modified cotton fabric was determined. The obtained results indicated that after the cotton fabric was modified by ionic liquid under the alkaline the dyeing performances of the modified cotton fabric was obviously enhanced. The K/S value of the modified cotton fabric was about 1.42 more than that of the untreated cotton fabric, the soaping fastness, rubbing fastness and breaking strength also were obviously enhanced.

Study on Finishing of Cotton Fabric by Sericin and its Properties

2011 ◽  
Vol 175-176 ◽  
pp. 624-628 ◽  
Author(s):  
Tie Ling Xing ◽  
Jie Liu ◽  
Guo Qiang Chen ◽  
Jia Yong Sheng ◽  
Dao Quan Sun ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Catalyst Concentration ◽  
Ph Value ◽  
Breaking Strength ◽  
Crosslinking Agent ◽  
Specific Property ◽  
Curing Temperature ◽  
Wear Property ◽  
Moisture Regain ◽  
Recovery Angle

In order to take the advantage of the specific property of sericin to improve wear property of cotton fabric, cotton fabric was finished with sericin. Sericin was fixed onto the surface of cotton fabric in the presence of poly-carboxylic acids (CA and BTCA) at high temperature using a pad-dry-cure process. The effects of catalyst concentration, pH value, curing temperature and curing time on the finish were investigated. The optimized finishing conditions for cotton fabric were obtained. The weight gain of treated fabric with BTCA as crosslinking agent was higher than CA. The whiteness, breaking strength, moisture regain, permeability to gas and crease recovery properties of treated fabrics were measured. The results showed that wrinkle recovery angle evidently increased, and the wrinkle recover angle of BTCA combined secrin treated fabric was higher than CA. The breaking strength, moisture regain and whiteness of the treated fabric slightly decreased, the permeability to gas of cotton fabrics were not changed.

Durable Antibacterial Finish on Cotton Fabrics with PAMAM/Ag+

2011 ◽  
Vol 332-334 ◽  
pp. 77-80 ◽  
Author(s):  
Chuan Jie Zhang ◽  
Hong Yang ◽  
Yun Liu ◽  
Ping Zhu
Keyword(s):  
Cotton Fabric ◽  
Antibacterial Agent ◽  
Antibacterial Property ◽  
Breaking Strength ◽  
Antibacterial Properties ◽  
Pamam Dendrimers ◽  
Cotton Fabrics ◽  
E Coli ◽  
Strength Retention ◽  
Better Than

Cotton fabric with excellent antibacterial properties was obtained by treated with polyamide-amine (PAMAM) dendrimers as a carrier and silver nitrate as an antibacterial agent. The antibacterial cotton fabrics were prepared by the methods of one-bath process and two-bath process. Antibacterial activity of cotton fabrics treated by two different methods was good, but the antibacterial durability of cotton fabric treated with two-bath process was better than that treated with one-bath process. After 50 washing cycles, cotton fabric treated with two-bath process still had good antibacterial property and its inhibitory rate to Gram-positive S. aureus and Gram-negative E. coli was over 99 %. It was found that the breaking strength retention of finished cotton fabrics was 85.83 % and the decrease of cotton fabrics’ whiteness index was about 15 %.

The effect of pH value on the formation of gold nanoshells

2011 ◽  
Vol 13 (8) ◽  
pp. 3301-3311 ◽  
Author(s):  
Zhongshi Liang ◽  
Yun Liu ◽  
Sameul S. Ng ◽  
Xiangyang Li ◽  
Lihui Lai ◽  
...  
Keyword(s):  
Ph Value ◽  
Gold Nanoshells ◽  
Effect Of Ph

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

Experimental study of moisture content effects on horizontal flame spread over thin cotton fabric

2018 ◽  
Vol 89 (15) ◽  
pp. 3189-3200 ◽  
Author(s):  
Yunji Gao ◽  
Guoqing Zhu ◽  
Hui Zhu ◽  
Weiguang An ◽  
Yu Xia
Keyword(s):  
Moisture Content ◽  
Cotton Fabric ◽  
Flame Spread ◽  
Extreme Values ◽  
Ignition Time ◽  
Convective Heat Transfer Coefficient ◽  
Flame Height ◽  
Spread Rate ◽  
Untreated Cotton ◽  
Flame Spread Rate

In this paper, moisture content effects on horizontal flame spread were experimentally investigated using 0.245 mm thick, 28 cm tall and 28 cm wide untreated cotton fabric sheets with various moisture contents varying from 0 to 34%. The pyrolysis spread rates, flame heights and ignition times were obtained and analyzed. The corresponding results are as follows: as moisture content increases, the flame height and spread rate first increase and then decrease. In contrast, the ignition time shows an opposite trend with moisture content. The extreme values are observed in cases of 2% moisture content samples. Moreover, the flame spread rate in the warp direction is larger than that in the weft direction. For horizontal flame spread, the moisture content has the effect of consuming part of the heat feedback, which can play a role in reducing the flame spread rate; simultaneously, the moisture content can enlarge flame size and increase the convective heat transfer coefficient, thereby resulting in an increase in flame spread rate. The non-monotonous trend in pyrolysis spread rate is the result of competition between these effects.

Effect of pH on the Minimum Inhibitory Concentration of Monolaurin Against Listeria monocytogenes1

1992 ◽  
Vol 55 (6) ◽  
pp. 449-452 ◽  
Author(s):  
DEOG-HWAN OH ◽  
DOUGLAS L. MARSHALL
Keyword(s):  
Listeria Monocytogenes ◽  
Minimum Inhibitory Concentration ◽  
Yeast Extract ◽  
Inhibitory Concentration ◽  
Ph Value ◽  
Potassium Sorbate ◽  
Butylated Hydroxyanisole ◽  
Tertiary Butylhydroquinone ◽  
Effect Of Ph ◽  
Glycerol Monolaurate

The effect of pH on the minimum inhibitory concentration (MIC) of glycerol monolaurate (monolaurin) against four strains of Listeria monocytogenes at 35°C in tryptic soy broth supplemented with 0.6% yeast extract was investigated. Our results demonstrate that the MIC of monolaurin was lower than MIC values reported for other common food antimicrobials such as potassium sorbate, tertiary butylhydroquinone, propyl paraben, and butylated hydroxyanisole. The MIC of monolaurin was reduced by decreasing the pH value of the medium. A 3-fold MIC reduction occurred when the pH decreased from pH 7.0 (10 μg/ml) to pH 5.0 (3 μg/ml).

SIGNIFICANT EFFECT OF PH ON PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS USING SEMICONDUCTOR CATALYSTS

2016 ◽  
Vol 78 (8-3) ◽  
Author(s):  
Nur Farhana Jaafar ◽  
Aishah Abdul Jalil ◽  
Sugeng Triwahyono ◽  
Adnan Ripin ◽  
Mohamad Wijayanuddin Ali
Keyword(s):  
Carbon Dioxide ◽  
Methyl Orange ◽  
Physicochemical Properties ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Ph Value ◽  
Effect Of Ph ◽  
Electrolysis Method ◽  
Ph Range ◽  
Positively Charged

Photocatalytic is one of the inexpensive and non-toxic techniques for degradation of organic pollutants into harmless substances such as water and carbon dioxide. In this study, simple electrolysis method was used in preparation of Ag/TiO2 and α-Fe2O3/HY catalysts. The physicochemical properties of the catalysts were studied using XRD, FTIR, FESEM-EDX and surface area analysis. The pH of solution plays an important role in the photocatalytic degradation of organic pollutants which influences the surface-charge properties of the catalysts. Ag/TiO2 and α-Fe2O3/HY were used as catalyst on degradation of 2-chlorophenol (2-CP) and methyl orange (MO), respectively. The effect of pH on degradation of 2-CP and MO were investigated over a pH range from 2 to 9. Higher degradation of 2-CP and MO were obtained at pH 5 (74%) and pH 2 (80%), respectively. This finding might be explained by the amphoteric performance of the catalyst using point zero charge (pHZPC). The pHZPC for Ag/TiO2 and α-Fe2O3/HY was found to be at pH 6.3 and pH 7.2, respectively. Hence, the activities of the catalysts may have been affected by the existence of a strong electrostatic field between the positively charged catalysts surface and negatively charged 2-CP and MO caused a pH value lower than their pHZPC give greater degradation.

Textile Performance Properties of Cotton Fabric Treated with Selected Flame-Retarding Finishes

1977 ◽  
Vol 47 (5) ◽  
pp. 365-371 ◽  
Author(s):  
Stanley P. Rowland ◽  
John S. Mason
Keyword(s):  
Cotton Fabric ◽  
Abrasion Resistance ◽  
Breaking Strength ◽  
Superior Performance ◽  
Disodium Hydrogen Phosphate ◽  
Performance Properties ◽  
Different Types ◽  
The Individual ◽  
Medium Weight ◽  
Selection Of

Seven different types of flame-retarding finishes were applied to light-to-medium weight cotton fabric at add-ons appropriate to pass the DOC FF 3–71 test. The finishes studied were based on tetrakis(hydroxymethyl)phosphonium chloride (THPC), neutralized THPC (THPOH), Fyrol 76, and Pyrovatex CP. The specific finishes were: THPOH-NH3, THPOH-urea-trimethylolmelamine, Proban (THPC-urea precondensate)-NH3, THPC-urea-disodium hydrogen phosphate, Fyrol 76, Fyrol 76-N-methylolacrylamide, and Pyrovatex CP-methylolmelamine. Textile performance properties are reported as a function of add-on of each type of finish; strengths and abrasion resistance of the finished fabrics are considered and discussed as a function of resilience. General trends of decreasing strength and abrasion resistance with increasing resilience were observed for these flame-retardant fabrics. Within this trend there is latitude for selection of finishes that will provide superior performance in the individual textile property such as abrasion resistance, breaking strength, and tearing strength.

Effect of pH Value on FeS2 Powder Synthesized by Solvothermal Process

2005 ◽  
Vol 21 (04) ◽  
pp. 419-424 ◽  
Author(s):  
CHEN Yan-Hua ◽  
◽  
◽  
ZHENG Yu-Feng ◽  
ZHANG Xiao-Gang ◽  
...  
Keyword(s):  
Ph Value ◽  
Solvothermal Process ◽  
Effect Of Ph
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