Enzyme washing of indigo and sulphur dyed denim

Patra, Arun Kumar; Madhu, Amit; Bala, Neeraj

doi:10.1186/s40691-017-0126-9

Cited by 21 publications

(17 citation statements)

References 5 publications

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“…In the textile industry, enzyme technology is drawing attention as an alternative to the traditional chemical finishing due to its characteristics of being non-toxic and environment-friendly [5,6,7,8,9]. In the fields of fiber modification, bio-bleaching, dye discoloration and decomposition, industrial wastewater treatment, and laundry detergent decontamination, various enzymes such as lysozyme, laccase, cellulase, amylase, and peroxidase have been studied for their possible immobilization [10,11,12,13,14,15,16,17].…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Trypsin from Porcine Pancreas onto Chitosan Nonwoven by Covalent Bonding

Kim

Lee

2019

Polymers

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The present study deals with the potential application of chitosan nonwoven for biomedical textiles based on enzyme immobilization. For this, chitosan nonwoven was first cross-linked with glutaraldehyde to introduce aldehyde groups at optimal conditions. To immobilize the enzyme trypsin onto glutaraldehyde-pre-activated chitosan nonwoven, several parameters such as pH, enzyme concentration, and reaction times were investigated. In addition, the pH, thermal stability, storage stability, and reusability of immobilized trypsin were examined. We found that the optimal immobilization conditions for trypsin were pH 8.5, enzyme concentration of 8% (owf), and treatment time of 30 min. Trypsin was immobilized at 25 °C efficiently. The immobilized trypsin showed lower pH stability and better thermal stability than free trypsin. The immobilized trypsin showed 50% of its initial activity after being used 15 times and 80% of that after 20 days of storage at 4 °C. SEM analysis also confirmed that trypsin was immobilized on chitosan nonwoven.

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Section: Introductionmentioning

confidence: 99%

Immobilization of Trypsin from Porcine Pancreas onto Chitosan Nonwoven by Covalent Bonding

Kim

Lee

2019

Polymers

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“…Technically denim is durable and strong cotton warp-faced textile material in which the weft thread passes under two or extra warp threads [1] [2]. This twill weave structure produces a diagonal design which differentiates it from cotton duck fabric [3] [4].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of Different Washing Processes on Various Properties of Stretch Denim Fabric

Hasan¹,

Asif²,

Razzaque³

et al. 2021

MSCE

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This research work was designed to explore the effect of different washing processes (enzyme wash, enzyme stone wash, enzyme stone wash with bleaching, heavy enzyme stone wash with bleaching) on various properties of stretch denim fabric. Different properties like tensile strength, tear strength, dimensional stability to washing, color fastness to washing, color fastness to water, color fastness to perspiration, color fastness to light, color fastness to rubbing, changes in fabric weight were investigated in context with different washing processes for stretch denim fabric. All tests were carried out according to the ISO (International Organization for Standardization). Enzyme washed fabric illustrated better performance regarding tear strength, tensile strength and dimensional stability; but showed moderate performance in different color fastness properties. But the color fastness to rubbing of heavy enzyme stone wash was excellent. No significant change was observed regarding the grade of color change and color staining for color fastness to wash, color fastness to perspiration and color fastness to light with respect to different types of washing processes like enzyme wash, enzyme stone wash, enzyme stone wash with bleaching and heavy enzyme stone wash with bleaching. The grade for dry rubbing and wet rubbing was comparatively better for enzyme wash rather than other washing processes. The GSM (gram per square meter) of stretch denim fabric also increased accordingly after different kinds of washing process rather than untreated stretch denim fabric. The dimensional stability of stretch denim fabric also altered after going through different washing process. The highest shrinkage was occurred in weft direction for heavy enzyme stone wash with bleaching.

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“…Stone Wash, Acid Wash, Rinse Wash, Enzyme Wash, and Bleach Wash are some of the most widely used wash types. 5,6 Among the washing methods, hypochlorite bleaching is a commonly used process in the industry, especially for denim washing, to achieve the desired color hue. With the aid of oxidizing or reducing chemicals, denim bleach may be used to decolorize indigo from denim.…”

Section: Introductionmentioning

confidence: 99%

“…Since environmentally sustainable processes use less oil, they are more cost-effective. [15][16][17][18] This research work aims to investigate the bleach wash effect of denim fabrics before and after wash treatment. After bleach washes the color fastness to wash properties has been observed.…”

Section: Introductionmentioning

confidence: 99%

An explanation of bleach wash on denim cotton fabrics

Alam¹

2021

JTEFT

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The process of giving denim special washed or vintage looks and color effects after stitching it into jeans or other garments. Different denim washing methods have been developed and used on various fabrics to produce a wide number of designs for fashionable denim garments and jeans over the last few decades. This study focused on the washing of denim fabrics with bleach and its effects on the denim fabrics. There were a total of three samples of three different structures of denim and bleached each sample in three different shades; light, medium, and dark. Among these samples, two samples were an indigo blue color, the composition of 98% cotton, 2% spandex, GSM–350 and 99% cotton, 1% spandex, GSM–330 respectively. KCI bleach for these two samples has found a good result. Another sample was black, 100% cotton, GSM–290. KCI bleach also applied on it but the result was not desired, bleaching results in a reddish effect over the fabrics, washed the remaining portion of the fabrics in caustic soda and got the desired result.

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Enzyme washing of indigo and sulphur dyed denim

Cited by 21 publications

References 5 publications

Immobilization of Trypsin from Porcine Pancreas onto Chitosan Nonwoven by Covalent Bonding

Immobilization of Trypsin from Porcine Pancreas onto Chitosan Nonwoven by Covalent Bonding

An Experimental Investigation of Different Washing Processes on Various Properties of Stretch Denim Fabric

An explanation of bleach wash on denim cotton fabrics

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