Mercerization

Cotton Mercerization

Mercerization, effect of Mercerization, cotton Mercerization, Mercerization and there effect, object of Mercerization 
what is mercerization, merceriztion, cotton mercerization, merceriztion effect, improvement after cotton merceriztion,effect of mercerization
The main object or mercerization is to improve luster. However, the process is  also carried out sometimes to enhance dye ability , to remove crease  mark and  remove naps from the fabric . 

The mercerization treatment consists of Swelling the cotton fibre with 20 to 23 % caustic Soda solution at room temperature under tension for specified duration. Tension during mercerization is necessary to improve luster.
Mercerization changes the following properties : It increases luster and reduces the axial ratio as shown


cotton Mercerization


Cross - Section of Cotton Fibre Before and After Mercerization




Microscopic observation shows that the cross - Section of cotton changes From elliptical to circular form, due to mercerization. This can he measured as a ratio of two axes  and  being longer than . The ratio / of unmercerized cotton is about 2. 2 to 2. 6 whereas that of mercerized cotton is about 1.5 to 1. 6.

Convolutions of the cotton fibres are removed duce to mercerization . The mercerized fibre when viewed under a microscope will look like a cylindrical tube . 

Mercerization increases reactivity and absorbency of cotton fabrics ( or chemicals , dyes , water , etc . and improves their tensile strength 



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