scholarly journals Validity of Washburn’s equation in sericin treated polyester fabric

2019 ◽  
Vol 70 (01) ◽  
pp. 94-97
Author(s):  
KAMALRAJ DASARATHAN ◽  
SUBRAMANIAM VENKATRAMAN
Keyword(s):  
Caustic Soda ◽  
Detailed Analysis ◽  
Reactive Dyes ◽  
Antimicrobial Effect ◽  
Polyester Fabric ◽  
Cotton Fabrics ◽  
Polyester Fabrics ◽  
Work Done ◽  
Kinetics Of

Application of sericin to polyester and cotton fabrics will bring about a number of advantages in that the materials become hydrophilic and are capable of imparting antimicrobial effect. Also, the materials can be dyed using reactive dyes. A considerable amount of work has been carried out on the application of sericin to polyester and cotton fabrics. Wickability of treated fabrics has been studied and it was demonstrated that there was an improvement. A detailed analysis of study is warranted on wickability as the work done on it was scant. It is necessary to validate Washburn’s equation which constitutes an important component of kinetics of wicking in this paper. The validity of Washburn’s equation for a set of data on wickability of sericin treated polyester fabrics is studied. Untreated polyester fabric and treated with caustic soda and plasma followed by sericin treatment using DMDHEU and Glutaraldehyde were taken for wicking studies. Two models were used. From the slopes it is found that Washburn’s equation is followed.

scholarly journals Kinetics of Reactive Dyed Pretreated Cotton Fabrics with and without using Salt

2019 ◽  
Vol 8 (4) ◽  
pp. 9723-9726
Keyword(s):  
Waste Water ◽  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Cross Linking ◽  
Dye Uptake ◽  
Effluent Water ◽  
Particle Movement ◽  
Wash Fastness ◽  
Kinetics Of

Most of the cotton fabrics at present are dyeing using reactive dyes which requires large quantities of salt, further produce large amount of effluent load to the environment in the form of more salinity in the effluent water along with other pollutants. In order to reduce the salinity in the waste water lot of investigations were carried out. Cotton fabrics pretreated with chitosan were dyed with reactive dyes. Pretreated samples were dyed without using salt as an electrpolyte. The influence of pretreatment on kinetics in dye bath i.e rate of dye particle movement towards the fabric, wash fastness, rubbing fastness was determined. The results of this study shows that the pretreatment of cotton with chitosan increases dye uptake and shows good fastness to washing and rubbing same as that of conventional way of dyed samples. It was determined that chitosan was effective cross linking agent in salt-free dyeing of cotton fabrics.

scholarly journals Renovation and Reuse of Reactive Dyeing Effluent by a Novel Heterogeneous Fenton System Based on Metal Modified PTFE Fibrous Catalyst/H2O2

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Bing Li ◽  
Yongchun Dong ◽  
Zhizhong Ding ◽  
Yiming Xu ◽  
Chi Zou
Keyword(s):  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Molar Ratio ◽  
The Novel ◽  
Heterogeneous Fenton ◽  
Reactive Dyeing ◽  
Toc Removal ◽  
Dyeing Effluent ◽  
Fenton System

Cu-Fe bimetallic grafted polytetrafluoroethylene (PTFE) fiber complexes were prepared and optimized as the novel heterogeneous Fenton catalysts for the degradation of reactive dyes under UV irradiation. Cotton fabrics were dyed with three reactive dyes, namely, Reactive Red 195, Reactive Yellow 145, and Reactive Blue 222, in tap fresh water using exhaustion process. The spent dyeing effluents were then collected and degraded with the optimized Cu-Fe bimetallic grafted PTFE fiber complex/H2O2system. The treated dyeing effluents were characterized and reused for the dyeing of cotton fabrics through the same process. The effect of reuse process number on quality of the dyed cotton fabrics was examined. The results indicated that the Cu-Fe bimetallic modified PTFE fiber complex with a Cu/Fe molar ratio of 2.87 was found to be the most effective fibrous catalyst, which enhanced complete decolorization of the treated dyeing effluents with H2O2in 4 h. However, the TOC removal for the treated dyeing effluents was below 80%. The dyeing quality was not affected for three successive cycles. The increase in residual TOC value influences fourth dyeing cycle. Further TOC reduction of the treated effluents is needed for its repeated reuse in more than three dyeing cycles.

Degradation kinetics of pectins by an alkaline pectinase in bioscouring of cotton fabrics

2007 ◽  
Vol 67 (4) ◽  
pp. 572-575 ◽  
Author(s):  
Qiang Wan+g ◽  
Xuerong Fan ◽  
Zhaozhe Hua ◽  
Weidong Gao ◽  
Jian Chen
Keyword(s):  
Degradation Kinetics ◽  
Cotton Fabrics ◽  
Kinetics Of

The research on the effect of the milk-clotting ferments of different origin on the milk clots formation

2021 ◽  
pp. 27-29
Author(s):  
Елена Евгеньевна Илларионова ◽  
Александр Геннадьевич Кручинин ◽  
Дарья Николаевна Калугина ◽  
Светлана Николаевна Туровская
Keyword(s):  
Detailed Analysis ◽  
Milk Clotting ◽  
Kinetics Of ◽  
Kinetics Of Gelation ◽  
Different Origin

Проведены исследования воздействия химозина, смеси химозина-пепсина и пепсина на коагуляционные свойства молока, а также его УФ-концентрата. По результатам эксперимента наилучшая эффективность сычужного свертывания отмечена в пробах с пепсином, однако для более глубокого анализа кинетики гелеобразования целесообразно применение реологических методов. We conducted the research on the effect of chymozin, mixtures of chymosin-pepsin and pepsin on the coagulation properties of milk, as well as its UV concentrate. According to the results of our experiment, samples with pepsin show the best efficiency of rennet clotting. However, it is advisable to use rheological methods to conduct a more detailed analysis of the kinetics of gelation.

scholarly journals Kinetics of dimerization of vinylsulfonyl reactive dyes.

1991 ◽  
Vol 47 (11) ◽  
pp. 598-605 ◽  
Author(s):  
Hiromi Motomura ◽  
In Hoi Kim ◽  
Zenzo Morita
Keyword(s):  
Reactive Dyes ◽  
Kinetics Of

Retention and release of odorants in cotton and polyester fabrics following multiple soil/wash procedures

2020 ◽  
Vol 90 (19-20) ◽  
pp. 2212-2222 ◽  
Author(s):  
M Mukhtar Abdul-Bari ◽  
Rachel H McQueen ◽  
A Paulina de la Mata ◽  
Jane C Batcheller ◽  
James J Harynuk
Keyword(s):  
Octanoic Acid ◽  
Solid Phase ◽  
Cotton Fabrics ◽  
Flame Ionization Detection ◽  
Solid Phase Micro Extraction ◽  
Liquid Detergent ◽  
Polyester Fabrics ◽  
Flame Ionization ◽  
Knit Fabrics ◽  
Incomplete Removal

Odorous clothing can be an annoying and unpleasant problem, particularly when odorants are not effectively removed via laundering. Cotton and polyester knit fabrics were soiled with three selected odorants, representing different polarities and lipophilicities (i.e. octanoic acid, 2-nonenal, dodecane). Fabrics were subjected to 1, 5 and 10 soil/wash cycles using a regular liquid detergent (Tide® Free and Gentle) or a sport liquid detergent (Tide® Plus Febreze Sport). Odorants released into the headspace were collected using solid phase micro-extraction, and odorants retained within the fabric were collected using solvent extraction. Analysis of odorant peaks was carried out using gas chromatography-flame ionization detection. Prior to laundering, higher amounts of all odorants were released into the headspace above polyester fabrics than above cotton fabrics. Cotton fabrics retained more octanoic acid within the fabric and lower amounts of 2-nonenal than polyester. Laundering was more effective at removing odorants from cotton than from polyester, and the polar octanoic acid was more readily removed than the two non-polar odorants from both fabrics. Accumulation of odorants occurred as soil/wash cycles increased from 1 to 5 cycles. However, between 5 and 10 soil/wash cycles the amounts of compounds did not significantly increase, with significantly lower amounts of octanoic acid extracted from cotton at 10 cycles compared to 5 cycles. The results from this study indicate that incomplete removal of odorants during washing, especially from oleophilic polyester fabrics, is a cause for odor build-up in clothing.

scholarly journals Dyeing of Polyester with Reactive Dyestuffs Using Nano-Chitosan

2018 ◽  
Vol 13 (2) ◽  
pp. 155892501801300
Author(s):  
Neda Najafzadeh ◽  
Sima Habibi ◽  
Mohammadreza A. Ghasri
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Morphology ◽  
Reactive Dyes ◽  
Color Difference ◽  
Polyester Fabric ◽  
Surface Chemical ◽  
Bending Resistance ◽  
Bending Behavior ◽  
Scanning Electron

The main objective of this work is to investigate the effect of nano-chitosan on the dyeing of polyester fabric with reactive dyes. Polyester fabric was treated with alkali and coated with nano-chitosan. Afterwards all samples were dyed with reactive dyes. The water absorption and bending resistance of pristine polyester, alkaline and chitosan-treated polyester were measured. In order to investigate surface chemical bonding, FTIR/ATR was employed. Surface morphology of fabrics was observed using scanning electron microscopy (SEM). Wettability and bending behavior of the treated polyester increased compared to the untreated one. The color difference between the dyed blank and chitosan-treated samples was estimated using a spectrophotometer. The data obtained shows it is possible to use reactive dyes to dye polyester fabrics finished with nano-chitosan and the resulting fabrics will exhibit acceptable washing and rubbing fastness.

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