We appreciate the guidance of our supervisor, Mr. Tanvir Ahmed Chowdhury, an assistant professor in the department of textile engineering at the Daffodil International University faculty of engineering. Finally, we would like to express our gratitude to all our classmates at Daffodil International University who participated in the discussion while the Project (Thesis) report was completed and written. The art of dyeing It was shown how the complete reactive dye process works (Pre-treatment after treatment,).
Keywords: Cotton fabric, Reactive dyes, Shade, Color production, Pre-treatment, Post-treatment, Color fastness tests. Reactive dye Reacts directly with substance that means the reactive reaction with dye and molecules of the substance. It is a device frequently used for molecular spectroscopy that can identify and study various wavelengths of electromagnetic radiation.
Most of the buyer's requirements are cotton fiber fabric. Cotton fiber is very strong fiber. The primary wall of cotton fibers is protected from moisture by the cuticle, which is composed of proteins, waxes and pectins. India invented the first cotton gin, a machine that separates cotton lint from plant seeds.
Because the advent of new technologies such as the spinning jenny, the spinning frame and the spinning mule made Britain one of the largest cotton producers during the Industrial Revolution.
Properties of Cotton
Cotton production grew faster and more efficiently, allowing the fiber to grow as a widely used textile.
Reactive Dye Structure
Properties of Reactive Dye
CHAPTER: 03
- Material
- Table: Sample Specification
- Table: Different chemical used in this study
- Dyes Name
- Dyeing Process for Reactive dye with cotton (Light & Medium) Grey fabric collect from batch Grey fabric collect from batch
- Dyeing Process for Reactive dye with cotton (Dark shade )
- Color Fastness to Gyro Wash
- Color Fastness to Rubbing
- Color Fastness to Perspiration
- Spectro-photometer
- Sample Attachment
- Sample Attachment Of the color fastness of wash
- Rubbing to Color fastness test
- Color Fastness to Perspiration test: (Acid & Alkali)
- Color Comparison by Spectrophotometer
Then we took the sample out of Gyro Machine and washed it with cold water. James Heal's Crock Master is an instrument that measures the color fastness of both wet and dry rubbing. There we also collected Light, Medium, Dark shade total of fabric or Swatch of the Dyeing Production.
After processing the Swatch the Swatch that we collected, we chose it as the standard and compared it after dyeing the fabric with.
CHAPTER:04 Result & Discussion
Rating of color staining test to washing
Rating of color staining test to rubbing
Rating of color staining test to perspiration Before (Alkaline & Acid ): Before (Alkaline & Acid )
After: ( Alkaline & acid)
Spectrophotometer Result
If you choose Post Processing as the default, it should be lighter if the DE, Daylight, and Light values are positive '+', and it should be darker if the DE, Daylight, and Light values are negative. Reddish and if the deviation axis value (Yes) is '-', there is less greenish. If the deviation axis value (Yes) is "+" and the yellowness value is "-", the color should be bluish.
If the Delta Chroma (DC) value is "+" and the Brighter value is "-", the color should be brighter. If the DH value is "+", it means that the color tone is better, and if the DH value is "-", it means that the color tone is worse. The value of the metamerism index that we obtained does not affect the tone of the shade.
If the value is 0.75-1, then the warranty and it is greater than 1, it is considered an error.
CHAPTER: 05 CONCLUSION
34;Synthesis of New Reactive Dyes Containing Commercial UV Absorbers with Improved Simultaneous Dyeing and Anti-UV Properties for Cotton Fabric", Journal of the Indian Chemical Society, 2021). 34;Synthesis of New Reactive Dyes Containing Commercial UV Absorbers with improved simultaneous dyeing and anti-UV properties for cotton fabric", Journal of the Indian Chemical Society, 2021. Structure of reactive dye 2.2.2 Properties of reactive dye 2.2.3 Mechanism of the reactive 2.3 Color fastness Chapter 3: Materials & method.
Test determination of color fastness to rubbing 3.14 Test determination of color fastness toperspiration 3.15 Color comparison with spectrophotometer Chapter 4: Result & discussion 4.1 Assessment of color dyeing test sweat 3.15 Color comparison by spectrophotometer Chapter 4: Result & discussion dyeing 4.1 Assessment of color dyeing test for washing 4.2 Assessment of color dyeing test for rubbing 4.3 Assessment of color staining test for sweat 4.4 for washing 4.2 Assessment of color staining test for rubbing 4.3 Assessment of color staining test for sweat 4.4. Keywords: Cotton fabric, Reactive dyes, Shade, Color production, Pre-treatment, Post-treatment, Color fastness test CHAPTER:-01 1.1 Introduction Reactive dye Reactive dye is which contains reactive group. CHAPTER:02 Literature and review 2.1 Cotton fiber: is a natural fiber. It is soft and cellulose fiber in our textile industry.
Secondary wall:- While the shape and thickness of the secondary wall determines its performance, the primary wall:- the primary wall protects the integrity of the fiber. Sweat fastness is very good for a reactive dye. 2.1.3 Mechanism of reactive dye: There are 3 ways for reactive dye: 1. Fixation: It means the reaction of the reactive group of –OH, -NH2 group, which creates a strong covalent bond with the fiber.
Reactive dye is done with alkaline conditions and PH is 10-12.3. In this part we used caustic soda, sodium carbonate on NaHCO3. This is a control dye bath PH that acts as a fixative. One of the most important factors in attracting consumers and encouraging them to purchase a product or clothing is color. One of the crucial quality criteria for colored fabrics is the retention of the original color.
One of the most significant and widely used color fastness tests is this CHAPTER: 03 3.1 Material This study is made of 100% jersey knit cotton fabric. Enzyme to remove lint from the fiber Salt To improve the exhaustion rate of the cotton fiber by neutralizing the negative charge that is created on the surface of the cotton fiber during dyeing Soda ash To maintain the alkaline condition during dyeing Peroxide stabilizer To stabilize the peroxide during peroxide during bleaching. 1.Synozol Yellow K-3RC 2.Synozol Red K-BC 3.Synozol Blue-BR Dark color: 1.Suncron Yellow Brown T-FW 2.Suncron Ruby T-FW 3.Suncron Black T-FW 3.5 Dyeing process for Cotton Reactive Dye (light and medium) Gray fabric collects from the set Water fill Chemical charge and wiping cloth at 60°C for 20 minutes Caustic and soda dosing at 45°C Peroxide dosing for 5 minutes Temperature rise 98° C, run time 30 min Cool down to 60°C Drain and fill Normal hot wash Drain and fill Kill dosing of acids and peroxide at 55°C, run time 10 minutes Enzyme dosing pH control at 55°C, run time 45 min Enzyme hot at 80°C for 5 min Drain fill Check pH leveling agent dosage at 55°C for 5 min Soda dosage at 60°C for 25 min Color dosage Use time 20 min Steam and temperature rise to 60°C Salt transfer at 55°C Soda dosing at 60°C for 25 min Color steam at 60°C for 60 min Hot wash Drain and fill Cold wash Drain and fill Dose of acid at 50°C for 10 min. dark) Gray fabric is collected from the pile Water fill Cleaning Chemical load and fabric at 60°C for 20 minutes Caustic and soda dosing at 45°C Peroxide dosing for 5 minutes Temperature rise 98°C, run time 30 minutes Cooling at 60 °C Drain and fill Normal hot wash at 70°C Drain &.
