Textile Bleaching Pdf
Water and water purification. The above mentioned processes describe batch processes.
Before the invention of hydrogen peroxide, sulphur dioxide was the only bleaching agent for wool. One opinion is that the color producing agents in natural fibers are often organic compounds containing conjugated double bonds. Effect of Time and Temperature Time and temperature of bleaching are interrelated. The natural history and structure of cotton fibres.
Impurities help in stabilization. Bio-preparation of cotton fabrics. The large-scale preparation of hcxamethylene diamine and adipic acid. Application As far as their behavior towards the fiber is concerned and their application properties, fluorescent brightening agents are similar to dye stuffs.
Comparative thermometer scales. Thepreparationof cellulose. Introduction to chemical constitution and colour, theory of dyeing, and classification of dyes. When generated too rapidly, it escapes from the bleaching bath into the atmosphere creating an explosion and health hazard.
It can be a complexing or a chelating agent. Regenerated man-made fibres. Fastness properties and accclerated. The building of macromolecules. The chemistry of proteins and keratin and the properties.
Some general properties of textile fibres and yarns. The early history of dyeing textile materials and the use of dyes derived from. The active oxygen is in fact the intrinsic bleaching agent as it will further destroy partly or completely the coloring matter present in the textile material. Bleaching cellulosic fibres with hypochlorites. Fibers like polyamide, bridgman books pdf polyacrylics and polyacetates can be bleached using reductive bleaching technology.
Crimping thermoplastic yarns. Use of grey scales in expressing results of fastness tests. The bleaching agent is a chemical reagent which decomposes in alkali solution and produce active oxygen.
Are you sure you want to Yes No. This will make the fabric in a super white form. Multicellular vegetable fibres.
Description of the crossdyeing. Causes of shrinking of wool and a review of shrink-proof finishes. Dyeing in catalase-treated bleaching baths. Congratulations, well done! You can change your ad preferences anytime.
The use of X-ray diffraction methods in investigating. Dyeing materials containing mixtures of fibres. Introduction to theory of dyeing. Dyeing polyamides, polyesters, and polyacrylonitriles. Gallons, litres, and pints conversion table.
This time is termed as the absorbency time. This complete absorption of drop is ensure by appearance of a dull spot on fabric i. Methods of determining temporary and permanent hardness.
However, viscose in staple form requires bleaching as it may not necessarily include a bleaching treatment during its manufacture. Therefore, they are only bleached in weak alkaline baths. The use of sodium chlorite for. The same standards of fastness have to be met by white goods which have been treated with fluorescent brighteners as colored dyeings.
You just clipped your first slide! The production and uses of. Reductive bleaching Many colouring matter can be reduced to colourless compound by reducing agents.
Bleaching Process In Textile Industry Pdf Download
Phosphates and ammonia are most widely used as alkalization source. You're using an out-of-date version of Internet Explorer. The classification of natural waters and the impurities in the claises.
Oxidative bleaching The Oxidative bleaching agents are used much more than Reductive bleaching agents. Remember me on this computer.
Bleaching textile treatment
The relationship between elastic. Surface tension and the mode of. Successfully reported this slideshow. Clipping is a handy way to collect important slides you want to go back to later. Methods for making fabrics fire resistant, water repellent, and moth- and.
The spectrum and additive and subtractive primaries. Cotton and the chemistry of cellulose. The properties of acrylonitrile.
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For loose cotton and yarn these three operations are sufficient, but for piece goods a larger number of operations is usually necessary in order to obtain a satisfactory result. Comparison of hydrometer scales. Chemical Constitution of Optical Brighteners Fluorescence characteristic is associated with their chemical structure. Disperse dyes and dyeing cellulose acetates. The nature of intermolecular forces in crystalline regions.
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