By E. R. Trotman
Dyeing and Chemical expertise of cloth Fibres by way of E. R. Trotman
Read Online or Download Dyeing and Chemical Technology of Textile Fibres PDF
Best chemical engineering books
Now in its 8th variation, Perry's Chemical Engineers' instruction manual deals unequalled, up to date assurance of all elements of chemical engineering. For the 1st time, person sections can be found for buy. you can now obtain simply the content material you wish for a fragment of the cost of the complete quantity.
Colloids express nice strength in a wide selection of purposes, together with drug supply and scientific imaging, and the layout and fabrication of colloid platforms has attracted huge curiosity within the examine group. Colloids in Biotechnology describes advancements within the box of biotechnological purposes long ago decade and bridges the space among those study efforts and commercially possible recommendations.
Separation approach ideas with purposes utilizing method Simulator, 4th version is the main accomplished and updated remedy of the main separation operations within the chemical undefined. The 4th version makes a speciality of utilizing procedure simulators to layout separation strategies and prepares readers for pro perform.
Extra info for Dyeing and Chemical Technology of Textile Fibres
Methylene blue can also be used as a reagent for quantitative estimation. 4 milliinole of well-purified methylene blue hydrochloride per litre. A measured volume of the solution is then withdrawn and the remaining methylene blue is determined either calorimetrically or by titration with Naphthol Yellow S. The latter method depends upon the fact that when a solution of Naphthol Yellow S is run into one containing methylene blue, a reddish-brown precipitate is formed, the blue colour of the solution becoming less intense and finally changing to yellow.
Methylene blue test Pure cellulose has no affinity for methylene blue, but the presence of carboxyl groups associated with acidic osycellulose or residual mineral acid associated with hydrocellulose formation do cause cellulosic fibres to absorb the dye. Both qualitative and quantitative tests are based on these facts. If cotton be immersed in a cold solution of methylene blue and then rinsed with boiling water, any significant degree of staining indicates degradation. Methylene blue can also be used as a reagent for quantitative estimation.
Hydrocellulose is usually accompanied by residual traces of acid. If there is a reduction in the methylene blue absorption brought about by boiling in dilute sodium hydroxide, it indicates the presence of acid, because this treatment has no effect upon the number of carbosyl groups. The latter will only be converted into sodium carbosylate which will revert to sodium chloride and carboxylic acid groups with the hydrogen chloride in the methylene blue hydrochloride. Silver nitrate test This is also referred to as Harrison’s test.
Dyeing and Chemical Technology of Textile Fibres by E. R. Trotman