Advanced Study Dyeing and Printing

• Advances in chemistry of dye intermediates and unit organic processes applied for their application. Colour and chemical constitution
• Chemistry of various synthetic dyes for application on textile fibers, novel chromophores and reactive groups, newer application techniques, Developments in dye chemistry
• Photochemistry of dyes, Solvent dyes, optical brightening agents and pigments. Azo ban, the forbidden amines, anomalies and testing.
• Natural dyes- concept and practice, classification, technology for production and application of natural dyes on textiles

·         Thermodynamics of dyeing and Kinetics of dyeing

·         Influence of fiber structure on dyeing, effect of processes on fiber properties before dyeing and during dyeing, Solubility parameter, cohesive energy density and interaction between dyes and polymers

·         Application of dyes on various substrates- natural, synthetic and blends

·         Advances in preparatory processes, time and energy saving techniques, Combine preparatory processes, Processing of textured man-made fibers

·         Rapid dyeing techniques, Foam dyeing, dyeing using supercritical carbon dioxide and   other advanced dyeing techniques.

·         Developments in dyeing machineries and dyeing defects

• Printing- Methods (block, roller, screen -flat bed, rotary, transfer, digital, flock, laser) & styles of printing
• Printing with

• Printing with natural dyes using block, roller, screen (flat bed and rotary screen), transfer, digital and flock
• Finishing and After treatment of printing
• Developments in transfer printing of natural as well as synthetic dyes, Digital printing    – Inkjet printing and Xerography, Concept of continuous processing.
• Developments in printing machineries and printing defects

• Dyeing and printing auxiliaries- Wetting agents, electrolytes, solvents, dispersing agents, oxidizing agents, reducing agents, cationic fixing agents, sequestering agents, retarding agents, carriers, hygroscopic agents, stabilizers and discharging agents
• Thickening agents – natural, modified and synthetic
• Importance of textile testing, Standard conditions of testing, standardization   and quality control
• Fabric Testing- Strength properties – tensile, bursting, tear and dimensional stability
• Performance properties – resistance to abrasion, pilling, wrinkling and burning
• Colorfastness – light, washing, dry cleaning, perspiration, saliva & ironing
• Quality parameters for fabrics suitable for various end uses - apparel, household and industrial textiles

• Wastes from textile and apparel industry: Environmental impact of dyeing, printing & finishes, Indian & International environmental legislations
• Harmful dyes and chemicals, Toxicology of synthetic colorants and  chemicals 
• Environmental impact of dyeing & printing.
• Health and safety requirements

• Introduction to Effluent Treatments of Textile and Apparel industry
• Effluent Treatment plants used in wet processing.