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Peroxide desizing Rot steeping desizing: Rot steeping is very oldest method of desizing when man cannot know the use of enzymes or other special chemicals. In this desizing process, starch is removed by rotting. In this process fabric is stored at oC for overnight in water. It removes starch and water soluble impurities with natural reaction.
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The main problems in rot steeping desizing are low efficiency due to longer treatment time and degradation of cellulose due to cross-infections of mildew if the fermentation process is not properly controlled.
In this method the starch is removed by the alkaline hydrolysis. The fabric is treated with 0. In alkali steeping care must be taken that, goods do not dry up, otherwise, it causes partial concentration of alkali.
Acid steeping or de-sizing process: In this method, 0.
Dilute acid attacks the polymer chain of starch and due to chain cleavage of starch molecule short water soluble or dispersible chain segments are formed. In this desizing process the amount of size removed is comparatively greater but it is risky process, due to hydrolytic degradation will occur which fall the strength of cotton.
Among all desizing process, enzymatic desizing is very popular and effective. Enzymatic desizing is the classical desizing process of degrading starch size on cotton fabrics using enzymes.
Enzymes are complex organic, soluble bio-catalysts, formed by living organisms, which catalyze chemical reaction in biological processes.
Enzymes are quite specific in their action on a particular substance. A small quantity of enzyme is able to decompose large polymer molecules. Amylases are the enzymes that hydrose and reduce the molecular weight of amylase and amylosepectin molecules in starch, rendering it water soluble enough to be washed off the fabric.
These enzymes, as vary through their source, they also vary according to their application condition.NEW YORK – Fifteen years ago, I wrote a little book, entitled Globalization and its Discontents, describing growing opposition in the developing world to globalizing reforms. It seemed a mystery: people in developing countries had been told that globalization would increase overall wellbeing.
Poor working conditions in the South Asian garment industry have led to far too many disasters, such as this factory building collapse near Dhaka, Bangladesh, in Get an answer for 'List the advantages and disadvantages of globalization.
List answers, not lengthy paragraphs, please.' and find homework help for other Social Sciences questions at eNotes. Cultural globalization: Cultural globalization, a phenomenon by which the experience of everyday life, as influenced by the diffusion of commodities and ideas, reflects a standardization of cultural expressions around the world.
Propelled by the efficiency or appeal of . The Effect of Globalization on Fashion with Special Reference to the Impact of Japanese Designs on the European Scene. the effect of ‘Globalization’ on fashion with special reference to the impact of Japanese designs on the European scene.
The definition of . Globalization of the footwear, textiles and clothing industries. Report for discussion at the Tripartite Meeting on the Globalization of the Footwear, Textiles and Clothing Industries: Effects on Employment and Working Conditions.